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Journal articles on the topic 'Schiff base; Metal complexes; Synthesis'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Bhavsar, Sainath, and Sunita Pachori. "SCHIFF BASE-METAL COMPLEXES AS CATALYSTS FOR ORGANIC TRANSFORMATIONS: EXPLORING GREEN CHEMISTRY APPROACHES." RASAYAN Journal of Chemistry 18, no. 02 (2025): 966–75. https://doi.org/10.31788/rjc.2025.1829241.

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Characterization, catalytic properties, and potential applications in organic transformations adhering to the principles of green chemistry of Schiff base metal complexes are studied. Stable metal-ligand complexes were formed using Schiff base ligands derived from salicylaldehyde and primary amines, complexed with metal ions (Cu, Zn, and Ni). A variety of techniques were used to characterize the synthesized complexes, including FTIR, NMR, XRD, UV-Vis, and TGA, which proved successful metal coordination and high thermal stability. The catalytic efficiency of the copper complexes was the highest

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2

Khan, Shamshad Ahmad, Kamlesh Kumar Singh, and Jahan Ara Khatoon. "Synthesis, characterization and microbiological screening of some transition metal complexes with nitrogen containing macrocyclic ligand." Research Journal of Chemistry and Environment 27, no. 2 (2023): 30–34. http://dx.doi.org/10.25303/2702rjce030034.

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A novel macrocyclic Schiff base ligand 1,4,8,11-tetraaza-2,3,9,10-tetramethyl cyclotetradeca-1,3,8,10-tetraene was synthesized by condensation between butane-2,3-dione and propane-1,3-diamine in an alcoholic medium. The complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff base have been prepared from metal salts in an alcoholic medium. The synthesized Schiff base and its metal complexes are characterized by elemental analysis, molar conductance measurements, magnetic susceptibility, FTIR and electronic absorption spectral data. The higher molar conductance values of these metal complexes

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3

Kumar, Manoj, Anita Rani, Hardeep Singh Tuli, Rajshree Khare, and Vinit Parkash. "Synthesis and Spectral Investigations of Polymeric Hydrazone Schiff Base and its Transition Metal Complexes with Promising Antimicrobial, Anti-Angeogenic and DNA Photo-Cleavage Activities." Asian Journal of Chemistry 31, no. 10 (2019): 2331–36. http://dx.doi.org/10.14233/ajchem.2019.22157.

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This report describes the synthesis and exploration of novel Schiff base ligand in the form of a polymer (heptamer) which was prepared by reaction between 3,4-diacetyl-2,5-hexanedione and hydrazine hydrate in ethanol. On further reaction of Schiff base with transition metals ions (Co and Cu) leads to formation of its transition metal complexes. The structural identification of Schiff base ligand and its transition metal complexes were characterized by classical structural techniques like FT-IR, NMR and mass spectra. The free ligand and its transition metal complexes have been screened for in v

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4

Muhammad, Jabbi Abubakar, Musa Husaini, and Habu Nuhu Aliyu. "Synthesis and characterization of schiff base of 3-[(2-Hydroxy-phenylimino)-methyl]-6-methoxy-quinolin-2-ol and its metal complexes and their evaluation for antibacterial and antifungal activity." Algerian Journal of Engineering and Technology 02 (February 6, 2020): 029–36. https://doi.org/10.5281/zenodo.3945251.

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A Schiff base of 3-[(2-Hydroxy-phenylimino)-methyl]-6-methoxy -quinolin-2- ol was synthesized by a 1:1 molar condensation of 2-Hydroxy-6-methoxy-3-quinolinecarboxaldehyde and 2-aminophenol. The metal (II) complexes were synthesized by refluxing the ethanolic solutions of the Schiff base and the chloride salts of the metals. Melting point, decomposition temperature, solubility, elemental analysis, fourier transform infrared spectroscopy, magnetic susceptibility and molar conductivity measurements were used to characterized the Schiff base and its metal complexes. The Schiff base is yellow and i

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5

Hamisu, Adamu, Abubakar Muhammad JABBI, and Habu Nuhu Aliyu. "Synthesis, Characterization and Antimicrobial Activities of Schiff Base Derived From Glyoximehydrazine and Substituted Furan and Their Metal (II) Complexes." Middle East Research Journal of Engineering and Technology 2, no. 2 (2022): 24–30. http://dx.doi.org/10.36348/merjet.2022.v02i02.002.

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A hydrazone Schiff base has been synthesized by the interaction of ethanolic solutions of antiglyoxime hydrazine with 2-acetyl-5-methylfuran to obtain the Schiff base L′. The complexes of Co(II), Ni(II) and Cu(II) of this Schiff base was synthesized and studied. The Schiff base and its metal(II) complexes were characterized based on solubility, percentage yield, elemental analysis, melting point/decomposition temperatures, infra- red spectral (FT-IR), conductivity measurement, magnetic susceptibility and water of crystallisation. Based on the results the prepared Schiff base and synthesized co

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6

Aminu, Ibrahim Hussaina, Nuhu Aliyu Habu, Musa Husaini, and Dayyib Aysha Salees. "Synthesis, characterization and antimicrobial studies on Mn(II), Fe(II), Co(II) complexes of schiff base derived from 3-Formylchromone and Benzohydrazide." Algerian Journal of Engineering and Technology 4 (March 25, 2021): 81–89. https://doi.org/10.5281/zenodo.4636930.

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Schiff base formed by condensation of 3-formylchromone and benzohyrazide and its metal(II) complexes of Mn(II), Fe(II), and Co(II), have been prepared and characterized by conductivity measurement, magnetic susceptibility, IR Spectra, atomic absorption spectroscopy, elemental analysis, as well as melting point/decomposition temperature and solubility test. The melting point of the Schiff base (165 <sup>0</sup>C) and decomposition temperatures of the complexes (185-198)<sup>0</sup>C indicating their thermal stability. The molar conductivity measurement determined are in the range (10.54-23.10)

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7

Bondar, Dhananjay Vyankat, and Vilas Sandipan Ingle. "Synthesis, Spectral Characterization and Antimicrobial Evaluation of 1- Hydroxy-2-acetonaphthone Schiff Base and their Fe(II), Mn(II) Metal Complexes." Research Journal of Chemistry and Environment 27, no. 2 (2023): 20–29. http://dx.doi.org/10.25303/2702rjce020029.

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Herein, we are reporting synthesis, characterization and antimicrobial activity of two novel Fe(II) and Mn(II) Schiff base metal complexes. These metal complexes were characterized by UV-Vis., FT-IR, NMR, LCMS, ESR and powder X- ray diffraction study. UV-Vis spectra resulted in more than 400 nm transition peak that confirms formation of metal ligand charge transfer. FT-IR confirms the formation of unsymmetrical Schiff base ligand and its complex obtained by using naphthol -OH and azomethine -C=N- group. 1H-NMR spectral data confirms the formation of Schiff base ligand and its complexes. From t

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8

Undegaonkar, Mahesh G., Sadashiv N. Sinkar, Vijay N. Bhosale, and Sunil R. Mirgane. "Solvent Free Synthesis and Characterization of Few Metal Complexes of Schiff Base Derived from 2-Amino-5, 6-dimethyl Benzimidazole and Syringaldehyde." International Journal of Pharmaceutical Sciences and Drug Research 13, no. 03 (2020): 240–45. http://dx.doi.org/10.25004/ijpsdr.2021.130301.

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A solvent-free synthesis of bidentate Schiff base ligand was carried out by treating 2-Amino-5, 6-dimethyl benzimidazole with Syringaldehyde in 1:1 molar proportion in a scientific microwave oven. The excellent yield was obtained after purification. Few metal complexes of Schiff base were synthesized by using Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Ag(I) metal salts in microwave oven under solvent-freecondition. All metal complexes showed distinct color at the end of the reaction, and the melting point of each complex preliminary confirmed the formation of the product. A d

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9

Rashad, Alaa A., Farah Muaiad, Ahmed Ahmed, EkhlasA Salman, and Evon Akram. "Synthesis and Photophysical Study of Divalent Complexes of Chelating Schiff Base." Baghdad Journal of Biochemistry and Applied Biological Sciences 1, no. 01 (2020): 5–16. http://dx.doi.org/10.47419/bjbabs.v1i01.24.

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Background: Schiff base compounds derivative from1,2,4-triazole, and their transition metal complexes play an essential role in coordination and bioinorganic chemistry due to biological and industrial applications. Objective: The work aims to prepare and characterize of 1, 2, 4-triazole Schiff base and its complexes with a theoretical study using PM3 calculation and HyperChem program, photophysical properties, and surface morphology for these complexes. Methods: 1, 2, 4-triazole Schiff base prepared by condensation reaction between 4-Amino-3-mercapto-5-phenyl-4H-1,2,4-triazole and 2-hydroxy-1-

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10

Rashad, Alaa A., Farah Muaiad, Ahmed Ahmed, Ekhlas A. Salman, and Evon Akram. "Synthesis and Photophysical Study of Divalent Complexes of Chelating Schiff Base." Baghdad Journal of Biochemistry and Applied Biological Sciences 1, no. 01 (2020): 5–16. http://dx.doi.org/10.47419/bjbabs.v1i01.27.

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Background: Schiff base compounds derivative from1,2,4-triazole, and their transition metal complexes play an essential role in coordination and bioinorganic chemistry due to biological and industrial applications. Objective: The work aims to prepare and characterize of 1, 2, 4-triazole Schiff base and its complexes with a theoretical study using PM3 calculation and HyperChem program, photophysical properties, and surface morphology for these complexes. Methods: 1, 2, 4-triazole Schiff base prepared by condensation reaction between 4-Amino-3-mercapto-5-phenyl-4H-1,2,4-triazole and

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11

Nuha, Alalam, and Bashir Salwa. "Determining the Stoichiometry of Schiff Base Metal Complexes." Chemistry Research Journal 9, no. 1 (2024): 152–58. https://doi.org/10.5281/zenodo.11279970.

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<strong>Abstract </strong> In this study, a Schiff base, specifically N,N-benzil p-aminoacetophenone-phenylenediamine, was synthesized through the condensation of o-phenylenediamine with p-aminoacetophenone, followed by further condensation with benzil in ethanol. The synthesized Schiff bases were characterized using various analytical techniques such as IR spectra, UV/VIS spectrophotometry, elemental analysis, and melting point determination. Their potential applications as analytical reagents were investigated using UV/VIS spectrophotometry with several metal ions including Cr(VI), Cu(II), V

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12

Aliyu, H. N., and H. Adamu. "SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITIES OF Ni(II) AND Cu(II) COMPLEXES WITH SCHIFF BASE DERIVED FROM 2-ACETYL-5-METHYLFURAN GLYOXIME HYDRAZONE." FUDMA JOURNAL OF SCIENCES 5, no. 4 (2022): 268–74. http://dx.doi.org/10.33003/fjs-2021-0504-813.

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A hydrazone Schiff base has been synthesized by the interaction of ethanolic solution of antiglyoxime hydrazine with 2-acetyl-5-methylfuran, to obtain the corresponding Schiff base L. The complexes of Ni(II) and Cu(II) of the Schiff base were synthesized and studied. The Schiff base and its metal(II) complexes characterized based on solubility, percentage yield, elemental analysis, melting/decomposition temperatures, infra- red spectral (FT-IR), conductivity measurement, magnetic susceptibility and water of crystallisation. The synthesized Schiff base and the complexes are coloured and stable

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13

Ismayilov, R. H., and P. A. Fatullayeva. "Metal complexes with dihydrazone of malonic acid dihydrazine." Scientific Petroleum, no. 1 (June 30, 2021): 58–62. http://dx.doi.org/10.53404/sci.petro.20210100008.

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This research includes synthesis and characterization of transition metal complexes of Cu (II), Co (II) and Ni (II) with hydrazone Schiff base ligand. Schiff base lagand was synthesized by reaction of malonic ester dihydrazide and 5-bromo salicylaldehyde. The structure of obtained complexes was studied by IR and electron spectroscopy. Keywords: hydrazone Schiff base ligand; copper complex; nickel complex; cobalt complex; IR and UV-Vis spectroscopy.

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14

Ommenya, F. K., E. A. Nyawade, D. M. Andala, and J. Kinyua. "Synthesis, Characterization and Antibacterial Activity of Schiff Base, 4-Chloro-2-{(E)-[(4-Fluorophenyl)imino]methyl}phenol Metal (II) Complexes." Journal of Chemistry 2020 (March 30, 2020): 1–8. http://dx.doi.org/10.1155/2020/1745236.

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A new series of Mn (II), Co (II), Ni (II), Cu (II), and Zn (II) complexes of the Schiff base ligand, 4-chloro-2-{(E)-[(4-fluorophenyl)imino]methyl}phenol (C13H9ClFNO), was synthesized in a methanolic medium. The Schiff base was derived from the condensation reaction of 5-chlorosalicylaldehyde and 4-fluoroaniline at room temperature. Elemental analysis, FT-IR, UV-Vis, and NMR spectral data, molar conductance measurements, and melting points were used to characterize the Schiff base and the metal complexes. From the elemental analysis data, the metal complexes formed had the general formulae [M(

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15

Soni, Monika, Rajendra K. Jain, and A. .P. Mishra. "MICROWAVE SYNTHESIS, SPECTRAL AND ANTIMICROBIAL STUDIES OF SOME SCHIFF BASE METAL COMPLEXES." International Journal of Advanced Research 13, no. 07 (2025): 07–13. https://doi.org/10.21474/ijar01/21260.

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Eco-friendly synthesis and green applications are continuously being explored by researchers all over the world. The numerous research pieces of evidence that microwave technology is a sophisticated tool for both synthesis and leading applications of Schiff base compounds. The greener approach is prioritized over the conventional synthesis because of its environment friendly less energy consuming, less time consuming, less hazardous compounds synthesis with low cost. Some new Schiff base complexes of VO(IV) and Co(II) derived from 4-dimethyl aminobenzaldehyde with 3, 4-dichloroaniline (DCA) ha

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16

Sakhare, Kuldeep B., Kirti N. Sarwade, Yogesh N. Bharate, and Mahadeo A. Sakhare. "Eco-friendly synthesis of azo Schiff base ligand and its metal complexes: Anticancer, antidiabetic and antimicrobial activities." Mongolian Journal of Chemistry 26, no. 53 (2025): 40–48. https://doi.org/10.5564/mjc.v26i53.3791.

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Now a days Cancer, Diabetics and other diseases are become major issue of the society. Due to this synthesis of potential medicines against it is a major challenge to the researcher and hence Schiff base ligand became an attracting class of researcher. The azo Schiff base ligands are most widely used in various fields such as medicinal, pharmacological, biological etc. due to its broad spectrum of biological activity. In this research paper we have synthesized the Azo-Schiff base ligand and its transition metal complexes by simple griding method. Synthesis via green approach and biological evo

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17

Divya, Kumble, Geetha M. Pinto, and Asha F. Pinto. "APPLICATION OF METAL COMPLEXES OF SCHIFF BASES AS AN ANTIMICROBIAL DRUG: A REVIEW OF RECENT WORKS." International Journal of Current Pharmaceutical Research 9, no. 3 (2017): 27. http://dx.doi.org/10.22159/ijcpr.2017.v9i3.19966.

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Schiff bases are versatile ligands which are synthesized from the condensation of primary amines with carbonyl groups. Synthesis of Schiff base transition metal complexes by using Schiff base as ligands appears to be fascinating in view of the possibility of obtaining coordination compounds of unusual structure and stability. These transition metal complexes have received exceptional consideration because of their active part in metalloenzymes and as biomimetic model compounds due to their closeness to natural proteins and enzymes. These compounds are very important in pharmaceutical fields be

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18

Journal, Baghdad Science. "Synthesis and Spectral Analysis of Some Metal Ions Complexes with Mixed Ligands of Schiff Base and 1, 10-Phenanthroline." Baghdad Science Journal 14, no. 1 (2017): 135–47. http://dx.doi.org/10.21123/bsj.14.1.135-147.

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The free Schiff base ligand (HL1) is prepared by being mixed with the co-ligand 1, 10-phenanthroline (L2). The product then is reacted with metal ions: (Cr+3, Fe+3, Co+2, Ni+2, Cu+2 and Cd+2) to get new metal ion complexes. The ligand is prepared and its metal ion complexes are characterized by physic-chemical spectroscopic techniques such as: FT-IR, UV-Vis, spectra, mass spectrometer, molar conductivity, magnetic moment, metal content, chloride content and microanalysis (C.H.N) techniques. The results show the formation of the free Schiff base ligand (HL1). The fragments of the prepared free

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19

Siraj, I. T., and B. U. Sambo. "Synthesis, characterization and antimicrobial activities of schiff base derived from thiourea and anisaldehyde and its Mn(II), Fe (II) and Co(II) complexes." Bayero Journal of Pure and Applied Sciences 11, no. 1 (2018): 20–24. http://dx.doi.org/10.4314/bajopas.v11i1.4.

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Complexes of Mn(II), Fe(II) and Co(II) with a Schiff base derived from condensation reaction of thiourea and o-anisaldehyde has been synthesized and characterized analytically and spectroscopically. Melting point of the Schiff base was found to be 160°C and the complexes decomposed within a temperature range of 215 to 275°C. Molarconductances of the complexes were found to be within 1.1 to 3.5W–1 cm2 mol–1 range. Magnetic moment indicated the complexes to be paramagnetic (4.03 to 5.71BM). Infrared spectrum of the Schiff base showed the azomethine peak at 1601cm–1 which shifted up to1687cm–1 in

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20

Antil, Nidhi, Mahak Dalal, K. K. Verma, and Sapana Garg. "Organyltellurium(IV) Bidentate Schiff Base Metal Complexes: Synthesis, Characterization and Biological Activities." Asian Journal of Chemistry 34, no. 8 (2022): 2008–16. http://dx.doi.org/10.14233/ajchem.2022.23679.

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Condensation of 5-(hydroxymethyl)furan-2-carboxaldehyde with 4-toluidine yielded a Schiff base (5-((p-tolylimino)methyl)furan-2-ol). A series of seven novel hexa-coordinated organyltellurium(IV) complexes of type TeCl4·HMeFPT, RTeCl3·HMeFPT and R2TeCl2·HMeFPT (where R belongs to 4-methoxyphenyl, 4-hydroxyphenyl and 3-methyl-4-hydroxyphenyl; L belongs to HMeFPT i.e. Schiff base have been prepared and characterized by molar conductance, IR, UV, 1H NMR, 13C NMR, mass spectroscopy and elemental analysis. Thus according to spectroscopic studies, Schiff base ligand functions as a NO donor bidentate

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21

Wagh, Shaila, and B. R. Patil. "SYNTHESIS, SPECTRAL, THERMAL AND ANTIMICROBIAL STUDIES OF NEW METAL COMPLEXES OF SUBSTITUTED HYDROXY PROPIOPHENONE." RASAYAN Journal of Chemistry 15, no. 03 (2022): 1718–27. http://dx.doi.org/10.31788/rjc.2022.1536355.

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A new series of metal complexes of innovative bisketimines (L1 - L5) have been synthesized. Schiff base ligands were synthesized by condensing substituted 2’- hydroxy propiophenone and ethylene diamine. The synthesized Schiff bases act as tetradentate ligands with two nitrogen and two phenolic oxygen groups and co-ordinates with Co (II), Ni (II), Cu (II) and Zn (II) salts. Ligands and their metal complexes have been studied using 1H NMR, IR, UV-Vis and thermogravimetric techniques. The complexes were crystalline, according to the XRD pattern. The thermogravimetric data revealed the thermal sta

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22

Hussaini, Sunusi Y., Maryam Abdulkadir, Najib A. Panda, Ibrahim I. Fagge, Hauwa I. Danjaji, and Salihu Sani. "Synthesis, Analysis and Antibacterial Studies of Co(II) and Ni(II) Schiff Base Complexes Derived from 2,4-Dinitrophenylhydrazine and Benzaldehyde." Scholars International Journal of Chemistry and Material Sciences 6, no. 03 (2023): 47–52. http://dx.doi.org/10.36348/sijcms.2023.v06i03.002.

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The Schiff base ligand has been synthesized by the reaction of ethanolic solution of benzaldehyde and 2,4-dinitrophenylhydrazine. The corresponding metal complexes were obtained by refluxing the chlorides of Co(II) and Ni(II) with the prepared Schiff base in an ethanolic medium. The Schiff base and its metal complexes were established and analyzed by FT-IR, solubility test, melting point/decomposition temperature and conductivity measurement. The melting point of the Schiff base was found to be 157C and decomposition temperature of Co(II) and Ni(II) complexes were found to be 167°C and 174°C r

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23

Abdullahi Kamilu, Umar Sani, and Hauwa Zakar Adam. "Synthesis, Characterization and Antimicrobial Studies Metal Complexes of Co (II) and Cu (II) with Schiff Base Derived from 2,6-Diaminopyridine and 2-Hydroxybenzaldehyde." ChemClass Journal 9, no. 2 (2025): 691–707. https://doi.org/10.33003/chemclass-2025-0902/190.

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Complexes of Co (II), Cu (II) with Schiff base derived from condensation of 2,6-diaminopyridine and 2-hydroxybenzaldehyde were successfully synthesized and characterized on the basis of FT-IR, Molar conductance, Magnetic susceptibility, Melting point/Decomposition temperature and Uv-Visible spectroscopy. The Schiff base and the metal complexes are found to be insoluble in water and some solvents, but very much soluble in DMSO and DMF as revealed by their solubility test. The Schiff base melts at 220 °C while the complexes decomposed within range of 260 - 270 °C. Magnetic moment values of the c

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24

Navneet Kumar Sen, Pushpa M. Rawtani, and Jyoti Raghuwanshi. "Synthesis, Characterization, And Study of Anti-Bacterial Properties of Ni (II) Schiff Base Complexes Derived from Benzaldehyde and Diphenylamine." International Journal of Latest Technology in Engineering Management & Applied Science 14, no. 6 (2025): 873–77. https://doi.org/10.51583/ijltemas.2025.140600095.

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Abstract: The present study deals with the synthesis of an N-phenylbenzal-diphenylamine Schiff base derived from Benzaldehyde and Diphenylamine. This Schiff base is formed by the condensation of Benzaldehyde and diphenylamine. Schiff bases are known for their diverse biological and coordination properties due to the presence of an azomethine group. The Ni (II) complex of this SB was obtained through refluxing the SB with the metal salt in ethanol. Both the SB and complexes were confirmed via spectroscopic and physicochemical analyses. The UV-Vis spectra of Ni-bis-N-phenylbenzal-diphenylamine c

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25

O. Sobola, A., G. M. Watkins, R. O. Shaibu, S. Adewuyi, and S. A. Amolegbe. "Synthesis, characterization and antimicrobial activity of copper(II) Schiff base adducts of some p-substituted aniline Schiff bases." Bulletin of the Chemical Society of Ethiopia 35, no. 1 (2021): 33–42. http://dx.doi.org/10.4314/bcse.v35i1.3.

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The synthesis, characterization and antimicrobial activity of Cu(II) complexes of some p-substituted aniline Schiff base ligands have been carried out. The Schiff bases were obtained from salicylaldehyde and o-vanillin. The Cu(II) complexes have been characterized by elemental analysis, conductivity measurement, infrared and electronic spectral data. The complexes were obtained either as metal chelates [Cu(L)2] or Schiff base adducts (CuCl2.2LH).xH2O. The metal chelates were non-electrolytes while the Schiff base adducts exhibited 1:1 or 2:1 electrolytes in methanol. The Cu(II) complexes exhib

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26

Abbasova, G. G., A. M. Pashajanov, M. I. Ganbarova, S. M. Gasanova, Z. A. Mammadova, and A. M. Nasibova. "SYNTHESIS AND CHARACTERIZATION OF NEW METAL COMPLEXES WITH TRIDENTATE HYDRAZONE LIGAND." Azerbaijan Chemical Journal, no. 4 (November 14, 2023): 84–90. http://dx.doi.org/10.32737/0005-2531-2023-4-84-90.

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Considering necessity of application of Schiff base ligands, containing hydrazone moiety, there were synthesized 2-hydroxy-1-naphtaldehyde acetylhydrazone and its metal complexes. A tridentate ligand with hydrazone moiety was synthesized on the basis of acetylhydrazine and 2-hydroxy-1-naphthoic aldehyde. The characterization and structure of it was identified by IR, UV- and NMR-spectroscopy. The electronic absorption spectrum of the ligand shows absorption bands in the range of max 237–320 nm. 1H NMR (300 MHz, CD4O):  6.90–8.21, 9.31, 10.52. Recrystallization occured from an ethanol. Mel¬tin

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27

Divya, Rana Tomar. "SYNTHESIS AND CHARACTERIZATION OF COPPER COMPLEX OF SCHIFF BASE." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES [FRTSSDS- June 2018] (June 22, 2018): 314–17. https://doi.org/10.5281/zenodo.1296236.

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Schiff base metal complexes have been studied extensively because of their wide range of applications in different scientific areas and their chemical and physical properties. Many of them are centred on the catalytic activity of Schiff base complexes in a large number of homogeneous and heterogeneous reactions. By this paper we throw light on the IR, UV studies of synthesised copper complex of schiff base.

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28

Vibhute, Baliram Tukaram, and Amol Jagannath Ghoti. "In vitro Antibacterial, Antifungal, Cytotoxicity and Molecular Docking Studies of Transition Metal(II) Complexes Derived from New Quinoline Schiff Base." Asian Journal of Chemistry 37, no. 2 (2025): 266–74. https://doi.org/10.14233/ajchem.2025.32957.

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The synthesis of new quinoline based Schiff base and its metal complexes viz. Co2+, Cu2+, Ni2+ & Cd2+, were synthesized and characterized. The Schiff base was prepared by condensation of 2-hydroxy-7-methoxyquinoline-3-carbaldehyde and p-methylbenzene sulfonohydrazide. The structure of Schiff base and its metal(II) complexes were characterized through different physical and analytical techniques i.e., FTIR, 1H NMR, 13C NMR, ESR, ESI-MS, electronic spectra, elemental analysis and TGA. Magnetic susceptibility values indicate that Cu(II), Co(II) and Ni(II) complexes were paramagnetic in nature

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29

Bala, Uba. "Synthesis, Characterization and Antimicrobial Activities of Schiff Base Complexes of Co (II) and Cu (II) Derived from Salicyldehyde and Diphenylamine." Scholars International Journal of Chemistry and Material Sciences 5, no. 1 (2022): 6–10. http://dx.doi.org/10.36348/sijcms.2022.v05i01.002.

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This paper reports antibacterial and antifungal activities of Schiff base and that’s of its metal (II) complexes (Co, Cu) derived from salicyldehyde and diphenylamine. The Schiff base and its metal (II) complexes were characterized using different analytical techniques like FTIR, melting point, solubility, and molar conductance, The Schiff base and its respective metals complexes were colored. The result from IR analysis revealed bands at 1614cm-1 indicating the formation of azomethine (C=N) confirming the formation of Schiff base. The band at 664cm-1indicate the formation of complex which is

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30

Aisha, Ahmad, Mohd Abdulazeez Abduljeleel, Aminu Ahmed, and Sarki Sagagi Balarabe. "SYNTHESIS, CHARACTERIZATIONS AND BOLOGICAL APPLICATIONS OF SCHIFF BASE DERIVED FROM O-PHENYLENEDIAMINE AND 2-HYDROXY-1-NAPTHALDEHYDE AND ITS Mn(II), Co(II), and Zn(II), METAL COMPLEXES." International Journal of Mathematics and Physical Sciences Research 11, no. 1 (2023): 87–93. https://doi.org/10.5281/zenodo.8220570.

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<strong>Abstract:</strong> Schiff base was synthesized by the condensation of o-phenylenediamine and 2-hydroxy-1-napthaldehyde. Its metal complexes were also prepared by reacting the Schiff with metal chlorides in ethanol.. The Schiff base and its metal (II) complexes were characterized by solubility test, melting and decomposition determination, FTIR, magnetic susceptibility, molar conductance analysis. Solubility test was carried on the Schiff base and the complexes which showed that they are all soluble in ethanol DMSO and DMF, but insoluble in water. From the FTIR result, Azomethine v(C=N)

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BAGUL, ABHAY, DIGAMBER GAIKWAD, YOGESH PATIL, and NILESH BHUSARI. "Synthesis, Characterization, Antimicrobial and Cytotoxic Investigations of Some Transition Metal(II) Complexes with Tridentate Schiff Base Derived from Pyrrolopyrimidine." Asian Journal of Chemistry 35, no. 11 (2023): 2815–21. http://dx.doi.org/10.14233/ajchem.2023.30256.

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A Schiff base pyrrolopyrimidine-hydrazide-m-chlorobenzaldehyde (HPPHmCB) was synthesized via condensation reaction between a pyrrolopyrimidinehydrazide and 3-chlorobenzaldehyde and its transition metal(II) complexes complexes followed by the characterization and electrochemical analysis. The magnetic susceptibility, electrolytic conductivity, elemental analysis, FT-IR, electronic absorption, ESR and PMR spectra were employed to elucidate the structural properties. The Schiff base HPPHmCB ligand acts as a tridentate N,N,N donor and produces complexes of type [M(PPHmCB)2], which exhibit a square

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32

Singh, Kiran, Preeti Siwach, and Amit Sharma. "Spectral and Biological Studies: Co(II), Ni(II), Cu(II), Zn(II) and Pd(II) Complexes of 5-Methyl-4-{(3-fluoro-4-methoxybenzylidiene)amino}-3-thiol-1,2,4-triazole." Asian Journal of Chemistry 32, no. 12 (2020): 3157–64. http://dx.doi.org/10.14233/ajchem.2020.22960.

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A series of metal-complexes of Co2+, Ni2+, Cu2+, Zn2+ and Pd2+ with new Schiff base named 5-methyl-4-((3-fluoro-4-methoxybenzylidiene)-amino)-3-thiol-s-triazole have been synthesized and characterized. Schiff base is formed by the condensation of 3-fluoro-4-methoxy-benzaldehyde and 4-amino-3-mercapto-5-methyl-1,2,4-triazoles (AMMT). After synthesis, Schiff base is characterized by IR and NMR techniques. Metal complexes are characterized by different techniques as IR, NMR, ESR, electronic and fluorescence. Elemental analysis and magnetic measurements of metal complexes have also been carried ou

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Sreenivas, V., G. Srikanth, Ch Vinutha, M. Shailaja, P. Muralidhar Reddy, and Ravinder Vadde. "Synthesis, Spectral Characterization and Antimicrobial Studies of Co(II) Complexes with Tetradentate Schiff bases Derived from Ortho-Phthalaldehyde." JOURNAL OF ADVANCES IN CHEMISTRY 9, no. 1 (2016): 1873–82. http://dx.doi.org/10.24297/jac.v9i1.2852.

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A series of cobalt (II) complexes have been synthesized with Schiff bases derived from ortho-phthalaldehyde and various amines in aqueous methanol solution. The newly synthesized Schiff bases and their Co (II) complexes have been characterized by elemental analysis, magnetic susceptibility, thermal, conductance measurements, mass, IR, electronic, 1H,13C-NMR spectral techniques. These ligands act as tetradentate species and coordinate to the metal center through the different potential donor atoms such as N, O and S. The probable octahedral structures have been assigned to these complexes. All

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Sundaramurthy, Santha Lakshmi, Geetha J., and Saranya J. "SYNTHESIS, SPECTROSCOPIC CHARACTERISATION AND IN VITRO BIOLOGICAL STUDIES OF SCHIFF BASE TRANSITION METAL (II) COMPLEXES." International Journal of Applied and Advanced Scientific Research 1, no. 2 (2017): 30–37. https://doi.org/10.5281/zenodo.256297.

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Coordination chemistry is the one of the interesting branch in inorganic chemistry. The research in coordination chemistry plays very important role in many fields including medical, industrial, analytical and material science. Schiff base is one of the important ligands in the field of Coordination Chemistry research. Schiff base is a condensation product of primary amines with carbonyl compounds. Amino acids are biologically important organic compounds and are very essential for every metabolic process. The research area encircling the coordination compounds with azomethine ligands derived f

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35

Gulzar, Aqsa, Tariq Mahmud, Liviu Mitu, Rubina Munir, Muhammad Imran, and Kiran Iftikhar. "Synthesis, Characterization and Biological Activities of a Schiff Base Derived from 2-[(1,3-benzothiazol-2-yl)sulfanyl]-N-[4-(hydrazinecarbonyl)phenyl]acetamide and its Complexes with Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) Ions." Revista de Chimie 70, no. 2 (2019): 596–601. http://dx.doi.org/10.37358/rc.19.2.6963.

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A new Schiff base ligand from 2-[(1,3-benzothiazol-2-yl)sulfanyl]-N-[4-(hydrazinecarbonyl)phenyl]acetamide (BHA) and its five metal complexes with transition metal ions [Mn(II), Co(II), Ni(II), Cu(II) and Zn(II)] have been synthesized. The resulting compounds were subsequently characterized by FTIR, UV-Vis, AAS, 1H NMR, 13C NMR and mass spectrometry. The proposed geometries of the Schiff base metal complexes were established on the basis of metal / ligand ratio, through AAS/ICP, electronic spectroscopy and magnetic data. The synthesized Schiff base and its complexes were further investigated f

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Bamigboye, Mercy, Osunniran Wahab, Shosanya Deborah, Ejidike Ikechukwu, and Ayuba Mustapha. "Synthesis and Characterization of Mixed Schiff Base- Salicylic Acid Metal Complexes." EDUCATUM Journal of Science, Mathematics and Technology 11, no. 2 (2024): 1–7. http://dx.doi.org/10.37134/ejsmt.vol11.2.1.2024.

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Four-metal (II) complexes of a new Schiff base [M(NaNp)(Sal)Cl2] where M=Mn (II), Ni (II), Cu (II), and Fe (II) were synthesized. The Schiff base and its complexes have been synthesized. They have been characterized by Fourier-transform infrared spectroscopy, Ultraviolet spectroscopy, Powder X-ray diffraction, and Scanning electron microscopy. The Fourier-transform infrared spectra of the Schiff base and its metal complexes were compared to determine the functional groups involved in the bonding. Results from FTIR spectra indicated that the Schiff bases are tetrahedral in geometry except for t

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37

Mamoon, Maream, Suad T. Saad, and Nour Abd Alrazzak. "Synthesis and Characterization of New Triazole Ligand with Some Transition Metals." NeuroQuantology 19, no. 7 (2021): 137–43. http://dx.doi.org/10.14704/nq.2021.19.7.nq21100.

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The work includes synthesis and characterization of new ligand and its complexes with divalent metal ions such as cobalt, nickel, copper and zinc. This project includes firstly, the synthesis of Schiff base by reacting P-aminoacetophenone with 2-amino-6-methylpyridine by the reflux reaction for 6 hr. and at 70 ° C. The second step involves the synthesis azo-Schiff base containing ligand which was prepared by the reaction of the Schiff base with the heterocyclic 1,2,4-triazole. The prepared ligand was characterized using spectroscopic methods such as Infrared spectrum, UV-visible spectrum, 1HNM

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Anupama, B., M. Padmaja, and C. Gyana Kumari. "Synthesis, Characterization, Biological Activity and DNA Binding Studies of Metal Complexes with 4-Aminoantipyrine Schiff Base Ligand." E-Journal of Chemistry 9, no. 1 (2012): 389–400. http://dx.doi.org/10.1155/2012/291850.

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A new series of transition metal complexes of Cu(II),Ni(II),Co(II), Zn(II) and VO(IV) have been synthesized from the Schiff base ligand (L) derived from 4-amino antipyrine and 5- bromo salicylaldehyde. The structural features of Schiff base and metal complexes were determined from their elemental analyses, thermogravimetric studies, magneticsusceptibility, molar conductivity, ESI-Mass, IR, UV-VIS,1H NMR and ESR spectral studies. The data show that the complexes have composition of ML2type. The UV-VIS, magnetic susceptibility and ESR spectral data suggest an octahedral geometry around the centr

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Ado, Habibu Bashir, Naseer Inuwa Durumin iya, Nura Nasiru Rabiu, et al. "Synthesis, characterization, and biological potential of 2-thiophene carbaldehyde o-phenylenediamine Schiff base and its Cr(II), Mn(II), and Fe(II) Complexes." Dutse Journal of Pure and Applied Sciences 10, no. 3a (2024): 252–60. http://dx.doi.org/10.4314/dujopas.v10i3a.23.

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A Schiff base was produced through the chemical reaction of 2-thiophene carbaldehyde with o-phenylenediamine. The corresponding metal (II) chlorides were refluxed with the Schiff base to produce the complexes of Cr (II), Mn (II), and Fe (II). These complexes were then characterized by elemental analysis, FT-IR, atomic absorption spectroscopy, solubility, melting/decomposition temperature, and magnetic susceptibility. The vibrational peak at 1622 cm̄1 in the FT-IR spectral data of the Schiff base was ascribed to the vibration frequencies of azomethine u(C=N). But in the complexes, it was discov

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Khan, Gulafsha D., Mahadeo A. Sakhare, Sanjeevan A. Survase, Yogesh N. Bharate, and Shailendrasingh V. Thakur. "SYNTHESIS, CHARACTERIZATION, ANTICANCER AND BIOLOGICAL ACTIVITIES OF TRANSITION METAL COMPLEXES DERIVED OF CHROMONE-3-CARBOXALDEHYDE SCHIFF BASE LIGAND." Journal of Dynamics and Control 9, no. 7 (2025): 183–204. https://doi.org/10.71058/jodac.v9i7013.

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A series of transition metal complexes of Co(II), Ni(II), Cu(II), Zn(II), Mn(II) and VO(II) have been prepared by tridentate Schiff base ligand containing N and O atoms. The Schiff base ligand(E)-1,5-dimethyl-4-(((4-oxo-4H-chromene-3-yl)methylene)amino)-2-phenyl-1H-pyrazol-3(2H)-one) have been synthesized by reaction between chromone-3-carboxaldehyde and 4-aminoantipyrineand characterized by Mass, 1H-NMR, FT-IR and UV-Visible spectroscopy and its metal complexes were characterised by FT-IR, UV-Visible, P-XRD, TGA and CHN analysis. All metal complexes exhibited 1:1 stoichiometry ratio of metal

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Kalaf gabar, Kaleda. "Schiff Base Complexes: Synthesis, Characterization and Study of Bioactive Such As Antibacterial and Antifungal." Ibn AL- Haitham Journal For Pure and Applied Science 31, no. 2 (2018): 115. http://dx.doi.org/10.30526/31.2.1962.

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The complexes of Schiff base (6-[Hydroxy - benzylidene)-amino]-pyrimidine-2,4-diol ) (L) with Mn(II), Fe(II), Co(II) and Ni(II) were prepared. The Schiff base and complexes have been characterized by FT-IR, 1H-NMR, UV-Vis, LC-mass spectra, magnetic moment, elemental microanalyses (C.H.N.), chloride containing, atomic absorption and molar conductance. The Schiff base, metal salts and complexes were also screened for their bioactivity such as antibacterial and antifungal.

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Yamgar, Ramesh S., Y. Nivid, Satish Nalawade, Mustapha Mandewale, R. G. Atram, and Sudhir S. Sawant. "Novel Zinc(II) Complexes of Heterocyclic Ligands as Antimicrobial Agents: Synthesis, Characterisation, and Antimicrobial Studies." Bioinorganic Chemistry and Applications 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/276598.

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The synthesis and antimicrobial activity of novel Zn(II) metal complexes derived from three novel heterocyclic Schiff base ligands 8-[(Z)-{[3-(N-methylamino)propyl]imino}methyl]-7-hydroxy-4-methyl-2H-chromen-2-one, 2-[(E)-{[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]imino}methyl]phenol, and (4S)-4-{4-[(E)-(2-hydroxybenzylidene)amino]benzyl}-1,3-oxazolidin-2-one have been described. These Schiff base ligands and metal complexes are characterised by spectroscopic techniques. According to these data, we propose an octahedral geometry to all the metal complexes. Antimicrobial activity of the Schiff bas

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Veeravel C, Rajasekar K, Balasubramanian S, and Selvarani R. "Green Route Synthesis of Bio-active Cd(II) and Hg(II) Complexes With ‘N’ Donor Novel Schiff base and Oxalate ion." International Journal of Research in Pharmaceutical Sciences 12, no. 2 (2021): 1689–94. http://dx.doi.org/10.26452/ijrps.v12i2.4768.

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Green route synthesis of bio-active diamagnetic Cd(II) and Hg(II) complexes with Schiff base and oxalate ion were synthesized using water as a solvent and characterized by using electronic spectra (UV-visible), Fourier transforms infrared (FT-IR), 1H and 13C-NMR spectroscopy, mass spectra and physical characterization such as CHN analysis, metal estimation and molar conductivity. 1H- and 13C-NMR spectra of ligand complex compared with Schiff base. The complexes have the general formula of ML2X (M= Cd(II) & Hg(II), L-C15H13N, X-C2O4 ) confirmed based on the results of elemental analysis, me

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Siraj, I. T., and B. L. Abdullahi. "Synthesis, antimicrobial activities of metal (ii) complexes from salicylaldehyde and valine Schiff base." Bayero Journal of Pure and Applied Sciences 15, no. 1 (2022): 119–24. http://dx.doi.org/10.4314/bajopas.v15i1.16.

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Complexes formed from the interaction of Fe(II), Co(II), Cu(II), and Zn(II) with Schiff base derived from salicylaldehyde and valine have been synthesized and characterized on the basis of melting point/decomposition temperature, solubility, molar conductance, UV spectroscopy and infrared spectral analysis. The Schiff base melted at a temperature of 208oC while the synthesized metal (II) complexes decomposed at a temperature range of 220-241°C. All the complexes were found to be soluble in water and DMSO but insoluble in acetonitrile, ether and hexane. Octahedral geometry around these metal io

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Islam, Md Tariqul, Md Nur Amin Bitu, Md Saddam Hossain, et al. "Structural and Potential Biological Properties of SBDTC and SMDTC Containing Metal Complexes: A Brief Review." Asian Journal of Chemical Sciences 14, no. 4 (2024): 1–16. http://dx.doi.org/10.9734/ajocs/2024/v14i4314.

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S-benzyldithiocarbazate (SBDTC) and S-methyldithiocarbazate (SMDTC) are working as a preliminary reactant for the synthesis of several Schiff base ligands. SBDTC and SMDTC can act as NS, SNNS, SNNNS, and NOS chelating agents and have biological and chemical potential for synthesizing many transition and inner transition metal complexes. The metal complexes prepared from SBDTC, SMDTC, and their derivatives have shown promising biological activities like antibacterial, cytotoxicity, antioxidant, antitumor, and anticancer activity. Last few decades, a lot of works have been reported on SBDTC and

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46

Hossain, M. S., C. M. Zakaria, and M. K. Zahan. "Synthesis and Characterization with Antimicrobial Activity Studies on some Transition Metal Complexes of N, O Donor Novel Schiff Base Ligand." Journal of Scientific Research 9, no. 2 (2017): 209–18. http://dx.doi.org/10.3329/jsr.v9i2.29780.

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Metal complexes of Mn(II), Fe(II), Co(II) and Cd(II) ions with Schiff base ligand 4-{(pyridin-2-ylimino)methyl}phenol derived from condensation of 2-amino pyridine with 4-hydroxybenzaldehyde was prepared. The ligand and complexes were isolated from the reaction in the solid form and characterized by conductivity, magnetic moment, TLC, IR, UV-Visible, thermal analysis and some physical measurements. During complexation reaction with transition metal ions Schiff base act as a deprotonated tridentate ligand and IR spectra showed that N and O atoms are coordinated to the central metal atom. The ob

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47

Chaudhary, Nrendra Kumar. "Synthesis and medicinal use of Metal complexes of Schiff Bases." BIBECHANA 9 (December 10, 2012): 75–80. http://dx.doi.org/10.3126/bibechana.v9i0.7178.

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Different Schemes for the synthesis of Schiff bases have been discussed. Solvent free synthesis by microwave irradiation technique is observed to be rapid, more efficient and more economical and at the same time may play a pivotal role in the progress of Schiff base synthesis. Mechanism for the synthesis of Schiff bases at controlled pH range has been studied. Biological functions of metal complexes of Schiff bases have found to be increased potentiality in presence of transition metal ions. DOI: http://dx.doi.org/10.3126/bibechana.v9i0.7178 BIBECHANA 9 (2013) 75-80

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48

Umar, Alkasim Alhassan, Safiyanu Adamu Lame, and Aminu Abdulkarim. "SYNTHESIS, CHARACTERIZATION AND ANTI-MICROBIAL ACTIVITIES OF SCHIFF BASE DERIVED FROM 2-AMINOBENZENETHIOL AND 4-NITROBENZALDEHYDE AND ITS Mn(II), Fe(II) AND Co(II) COMPLEXES." FUDMA JOURNAL OF SCIENCES 9, no. 3 (2025): 40–44. https://doi.org/10.33003/fjs-2025-0903-3096.

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A Schiff base was prepared by the condensation of 2-aminobenzenethiol and 4-nitrobenzaldehyde. Metal (II) chlorides were refluxed with the prepared Schiff base affording the corresponding metal(II) complexes. The synthesized compounds were characterized based on T-IR, solubility test, melting point/decomposition temperature, molar conductance, magnetic susceptibility, UV-visible spectroscopy and elemental analysis. IR spectra of the Schiff base indicated the azomethine (-C=N-) peak at 1596cm-1, which is shifted in the spectra of the complexes. The Schiff base melts at 160oC, whereas the chelat

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SARASWATHY, G., M. SANKARGANESH, C. ANITHA, and M. KALANITHI. "Synthesis, Spectral, Electrochemical, Antimicrobial and DNA Binding/Cleavage Studies of Metal Complexes with Schiff Base of Fluoro Substituted Aniline." Asian Journal of Chemistry 32, no. 11 (2020): 2911–16. http://dx.doi.org/10.14233/ajchem.2020.22876.

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A new series of Schiff base complexes of transition (Fe3+, Co2+, Ni2+, Cu2+ and Zn2+) metal were synthesized from 4-fluoroaniline and 2-thiophene carboxaldehyde and structurally characterized by spectroscopic techniques. The Schiff base is found to be a bidentate ligand and coordinates to the metal ion through azomethine nitrogen and sulphur atom of the thiophene ring. In fluorescence studies, an interaction of Ca2+ and Mg2+ ions with the ligand was also studied. The Schiff base and its transition metal complexes showed inhibition activity against Gram-positive bacteria (Staphylococcus aureus,

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50

Sathish Kumar, K., Vijay Kumar Chityala, N. J. P. Subhashini, Y. Prashanthi, and Shivaraj. "Synthesis, Characterization, and Biological and Cytotoxic Studies of Copper(II), Nickel(II), and Zinc(II) Binary Complexes of 3-Amino-5-methyl Isoxazole Schiff Base." ISRN Inorganic Chemistry 2013 (February 2, 2013): 1–7. http://dx.doi.org/10.1155/2013/562082.

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Binary complexes of Cu(II), Ni(II), and Zn(II) ions have been synthesized by reacting metal salts with a Schiff base, 2-((E)-(5-methylisoxazol-3-ylimino)methyl)-4-methoxyphenol (MIIMMP) in an alcoholic medium. All the metal complexes and schiff base have been characterized by using elemental analysis, IR, UV-VIS, 1H-NMR, 13C-NMR, Mass, ESR spectral data, magnetic moments, TG, and DTA studies. Based on the analytical, spectral data and molecular modeling studies, Ni(II) and Zn(II) metal complexes have octahedral geometry, whereas Cu(II) complex has tetragonal geometry. The antimicrobial and cyt

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