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Journal articles on the topic 'Schiff base, Elemental analysis; IR spectra; Reflection spectra'

Author: Grafiati

Published: 24 April 2022

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1

Dey, Dilip Kumar, Brajagopal Samanta, Antonin Lycka, and Lutz Dahlenburg. "Simple Synthesis, Characterization and Structure of Diorganotin(IV) Complexes Containing the N-(2-Salicylidene)-N'-benzoylhydrazone Ligand." Zeitschrift für Naturforschung B 58, no. 4 (2003): 336–44. http://dx.doi.org/10.1515/znb-2003-0415.

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Two diorganotin(IV) complexes of general formula R2Sn[2-OC6H4CH=NDN=C(O)Ph] (R = Ph, 1; R = Me, 2) have been synthesized from the corresponding diorganotin(IV) dichloride and the Schiff base derived from salicylaldehyde and benzoyl hydrazide. The two compounds have been characterized by elemental analysis, IR and NMR (1H, 13C, 15N, 119Sn) spectra, and their structures have been confirmed by single crystal X-ray structure analysis. Crystals of complex 1 re triclinic, space group P1̄ , a = 11.1631(5), b = 13.462(2), c = 16.511(1) Å , α = 106.193(9), β = 106.379(8), γ = 94.932(8)°, Z = 4, R1 = 0.

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2

Thakar, A. S., K. K. Singh, K. T. Joshi, A. M. Pancholi, and K. S. Pandya. "Synthesis, Characterization and Antibacterial Activity of Schiff Bases and their Metal Complexes Derived from 4-Acyl-1-phenyl-3-methyl-2-pyrazolin-5-ones and 2-Amino-4(4'-methylphenyl)-thiazole." E-Journal of Chemistry 7, no. 4 (2010): 1396–406. http://dx.doi.org/10.1155/2010/163264.

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4-Acyl-1-phenyl-3-methyl-2-pyrazolin-5-ones condensed with 2-amino-4(4'-methylphenyl)-thiazole to form Schiff base. These Schiff bases from complexes of type ML22H2O (M=Mn, Fe, Co, Ni and Cu). Elemental analysis, magnetic susceptibility, electrical conductance, electronic and Infrared spectral data suggested octahedral structure for the complexes. All the compounds were tested for their antibacterial activity. The result indicates that the growth of the tested organism was inhibited by most of the compounds. These Schiff bases are characterized by elemental analysis, mass spectra,1H-NMR spectr

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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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4

Prakash, Shivani, Anju Kumari Gupta, Sachin Prakash, and D. Prakash. "Studies on Some Hetero Binuclear Copper(II) Schiff base Complexes." Oriental Journal Of Chemistry 36, no. 05 (2020): 954–57. http://dx.doi.org/10.13005/ojc/360522.

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A series of new hetero binuclear complexes of copper(II) and lead(II) using Schiff base have been synthesized. The Schiff base has been derived from the condensation reaction between Salicylaldehyde and 1,2-Ethylenediamine. The hetero binuclear complexes have been characterized by using elemental analysis, molar conductance measurement, magnetic susceptibility studies, UV-Vis and IR spectra. The studies revealed square planar geometry for the complexes with coordination number four.

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Thakar, A. S., K. S. Pandya, K. T. Joshi, and A. M. Pancholi. "Synthesis, Characterization and Antibacterial Activity of Novel Schiff Bases Derived from 4-Phenyl-2-aminothiazole and their Mn(II), Fe(II), Co(II), Ni(II) and Cu(II) Metal complexes." E-Journal of Chemistry 8, no. 4 (2011): 1556–65. http://dx.doi.org/10.1155/2011/875896.

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Novel Schiff bases and their metal complexes were derived from some hetero cyclicβ-diketones with 4-phenyl-2-aminothiazole. All the synthesized compounds were confirmed their structure by Elemental analysis, FT-IR,1H NMR,13C NMR, Mass spectra, TGA analysis and UV spectra. All the compounds were tested for their antibacterial activity. Spectroscopic measurements suggest that all Schiff base metal complexes are of type ML2.(H2O)2(M=Mn, Fe, Co, Ni and Cu) and all the metal complexes shows moderate antibacterial activity in the agar cup assay method.

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6

Selvarani, R., S. Balasubramaniyan, K. Rajasekar, M. Thairiyaraja, and R. Meenakshi. "Synthesis, DFT and Bio-Potential Activities of Mn(II) and Hg(II) Complexes with Bidentate (E)-N′[(E)-3-Phenylallylidene]benzene-1,2-diamine." Asian Journal of Chemistry 33, no. 6 (2021): 1222–28. http://dx.doi.org/10.14233/ajchem.2021.23150.

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A new bidentate Schiff base (E)-N′[(E)-3-phenylallylidene]benzene-1,2-diamine derived from the condensation of o-phenylenediamine and cinnamaldehyde and its Mn(II) and Hg(II) complexes were synthesized and characterized by elemental analysis, molar conductance, magnetic moment, electronic spectra, IR, far-IR and NMR (1H & 13C) spectral studies. The elemental analysis and these metal proposed the metal:ligand stoichiometry and molecular formulae of the metal complexes. The molar conductance and electrochemical property indicates monomeric, neutral nature and redox properties of the metal co

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7

Singh, Kamlesh Kumar, and Shamshad Ahmad Khan. "Synthesis and characterization of cobalt(II) complexes with bidentate Schiff base ligand." Research Journal of Chemistry and Environment 25, no. 10 (2021): 76–79. http://dx.doi.org/10.25303/2510rjce7679.

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The coordination complexes of Co(II) have been prepared from bidentate Schiff base. The Schiff base ligand was synthesized by the condensation of 4- hydroxy-3-methoxybenzaldehyde and 2-aminobenzhydroxamic acid in an alcoholic medium at room temperature. The ligand and cobalt (II) complexes were characterized by elemental analysis, molar conductance, electronic spectra, IR spectra, NMR spectra, electrical conductivity and magnetic susceptibility. The cobalt (II) complexes are colored and stable in air. In the metal complexes, the metal -ligand ratio was found to be 1:2. A sharp band at 1630 cm-

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8

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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9

Li, Mei, Guo Ping Yang, and Hong Liang. "Biological Activity Studies on a Copper(II) Complex with Taurine Schiff Base." Advanced Materials Research 912-914 (April 2014): 57–60. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.57.

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A new material of copper(II) complex (complex 1) with taurine Schiff base has been synthesized and characterized by elemental analysis, ESI-MS and IR spectra. 1 was tested against HepG2 cell lines with IC50 values of 12.89 μM. With the concentrations of 1 increasing, the population of apoptosis was 1.28% for 0 μM, 24.4% for 10 μM and 47.9% for 20μM, and the population of G2 phase was 19.2% for 0 μM, 34.4% for 10 μM and 42.9% for 20μM, respectively. 1 showed significant cytotoxic activity against HepG2 cell lines.

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10

Tan, Li Ju, He Dong Wang, and Jiang Tao Wang. "Preparation and Characterization of Two New Kinds of Soluble Quaternary Ammonium Salts of Chitosan." Advanced Materials Research 239-242 (May 2011): 496–500. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.496.

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Schiff base of chitosan was obtained by the reaction of chitosan and aromatic aldehyde, and then Schiff base of chitosan reacted with methyl iodide to get soluble quaternary ammonium salts of chitosan which were N-metoxybenzenemethyl quaternary ammonium salt of chitosan (NM- Chitosan) and N-hydroxybenzenemethyl quaternary ammonium salt of chitosan(NH-Chitosan). The obtained chitosan derivatives were characterized by Infrared Spectra Analysis(FT-IR), Nuclear Magnetic Resonance Spectroscopy(1H NMR) and elemental analysis. Quantitative analysis showed that there was small difference between degre

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Rajak, Ashish, Arpit Srivastava, Subhash Chandra Shrivastava, Ranjeet Singh Chauhan, Uday Singh Patel, and Shekhar Srivastava. "Synthesis and Spectral studies of Ru (II) complexes with Macrocyclic Ligands." Oriental Journal Of Chemistry 37, no. 4 (2021): 763–69. http://dx.doi.org/10.13005/ojc/370401.

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Fifteen Ru (II) complexes of the type [RuCl2(L)] (where L= N4 donor macrocyclic ligands) have been synthesised by reaction of [(RuCl2(DMSO)4] with fifteen macrocyclic Schiff base ligands containing N4 donors groups. The prepared fifteen [RuCl2(L)] complexes were characterised by elemental analysis, molar conductivity, UV-visible, IR, X- ray photoelectron spectra (XPS) and magnetic susceptibility measurementsand an octahedral geometry was proposed for all these complexes.

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12

Far, Hadjer, Tahar Benaissa, Abdelhak Mohamed Touadjine, Asma Mostefai, Sofiane Daoudi, and Ali Rahmouni. "Experimental and Theoretical Studies on the Structural and Vibrational Spectra of Schiff Base and Their Complex." International Journal of Chemoinformatics and Chemical Engineering 8, no. 1 (2019): 47–55. http://dx.doi.org/10.4018/ijcce.2019010104.

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The synthesis of 5,5 '- (ethane-1,2-diylbis (azaneylylidene)) bis (3-undecyl-1,5-dihydro-4H-1,2,4-triazol-4-amine) and its Co (II) complex was carried out, and their structural spectroscopic properties were determined. The mode of bonding for the complexes was accomplished based on the elemental analysis, IR, UV-Vis, and NMR spectroscopy. Electronic structures and spectroscopic properties of the title compound were investigated from the calculative point of view. DFT/B3LYP optimization was performed based on the 6–31++G(d,p) basis set. In addition, the vibrational frequency analysis was perfor

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13

Sarvestani, Ali Hossein, Abdollah Salimi, Sajjad Mohebbi, and Rahman Hallaj. "Synthesis, Spectroscopy and Electrochemistry of Cobalt(III) Schiff Base Complexes." Journal of Chemical Research 2005, no. 3 (2005): 190–93. http://dx.doi.org/10.3184/0308234054213708.

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Three Co(III) complexes of the type [Co(chel)(PBu3)]ClO4.H2O, (chel = 5-BrSalen, 5-MeOSalen and 4-MeOSalen), were synthesised and characterised by elemental analysis, IR, UV-Vis and 1H NMR spectroscopy. In their electronic spectra, the absorptions between 550 and 750 nm of these complexes are attributable to the lowest d–d transition. The axial ligands affect this transition through a σ-intraction with the dz2 orbital and the equatorial ligands affect it by π-interaction with populated d-orbitals. On the basis of an electronic structural model, in which the dz2 orbital is populated in forming

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14

Naglah, Ahmed M., Abd El-Galil E. Amr, and Mashooq A. Bhat. "Microwave Effect versus Thermal Effect on the Synthesis of 4-[(substituted benzylidene)amino]-5-(pyridin-4-yl)-4H-1,2,4-Triazole-3-Thiol Candidates." Journal of Computational and Theoretical Nanoscience 13, no. 10 (2016): 7310–13. http://dx.doi.org/10.1166/jctn.2016.5715.

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A series of Schiff base derivatives 4a-k were synthesized from 4-amino-3-(4-pyridyl)-5-mercapto-4H-1,2,4-triazole 3 as starting materials by using microwave irradiation technique. The synthesized compounds were fully characterized by NMR, FT-IR, elemental analysis, and HR-mass spectra. The results indicated that the microwave irradiation technique gave higher yields of pure products with short time of the reaction in compare to the thermal method.

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15

Mehmet Poyraz, Mehmet Poyraz, Musa Sari Musa Sari, Halil Berber Halil Berber, and Nursenem Karaca and Fatih Demirci Nursenem Karaca and Fatih Demirci. "Synthesis, Characterization and X-Ray Crystal Structure of the New Schiff Base and Anticandidal Evaluation." Journal of the chemical society of pakistan 41, no. 6 (2019): 1090. http://dx.doi.org/10.52568/000811/jcsp/41.06.2019.

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A new Schiff base, namely 2-methoxy-6-((2-(4 nitrophenyl) hydrazineylidene) methyl)phenol was synthesized and characterized by melting points, elemental analysis, thermogravimetric analysis and spectroscopic techniques (FT-IR, 1H-NMR and UV-VIS spectra). The chemical structure of compound was further confirmed by single crystal structural X-ray diffraction. The Schiff base is crystallized in the triclinic space group P-1. In the crystal, molecules are linked by O-H…O hydrogen bonds between the hydroxy “-O-” atom and the methoxy “-O-” atom. Furthermore, the synthesized Schiff base was tested fo

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16

Antil, Nidhi, Manish Kumar, K. K. Verma, and Sapana Garg. "Complexes of Organyltellurium(IV) with Neutral [N,O] Donor Schiff Base Derived from Substituted Furfuraldehyde and Toluidine: Synthesis, Structural Characterization, Computational Studies and Biological Evaluation." Asian Journal of Chemistry 34, no. 5 (2022): 1125–33. http://dx.doi.org/10.14233/ajchem.2022.23615.

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Organyltellurium(IV) complexes of Schiff base (MeFPT = 4-methyl-N-((5-methylfuran-2- yl)methylene)aniline) derived from condensation reaction of 5-methyl furan-2-carboxaldehyde with p-toluidine having formula of type MeFPT·RTeCl3 and MeFPT·R2TeCl2 (R = 4-hydroxy-phenyl, 4-methoxyphenyl or 3-methyl-4-hydroxyphenyl) were reported. These complexes have been characterized by elemental analysis, IR, 1H NMR, 13C NMR, UV-Vis, DFT, molecular modelling and mass spectra. The experimental data demonstrated that formed Schiff base complexes behaved as bidentate ligand with R1TeCl3 and R2TeCl2 chelated by

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17

Takase, Masahiro, Shiomi Yagi, Tomoyuki Haraguchi, Shabana Noor, and Takashiro Akitsu. "Linearly Polarized UV Light-Induced Optical Anisotropy of PVA Films and Flexible Macrocycle Schiff Base Ni(II), Cu(II), Zn(II) Dinuclear Complexes." Symmetry 10, no. 12 (2018): 760. http://dx.doi.org/10.3390/sym10120760.

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Three dinuclear metal complexes (comprised of six-coordinated nNi2L and five-coordinated nCu2L and nZn2L) were confirmed by means of elemental analysis, UV-vis and IR spectra, and single X-ray crystal structural analysis in a spectroscopic study. The stable structures of these nNi2L, nCu2L, and nZn2L complexes in poly(vinylalcohol) (PVA) films were analyzed using UV-vis spectra. The molecular orientation of hybrid PVA film materials after linearly polarized light irradiation was analyzed to obtain the polarized spectra and dichroic ratio. Among the three materials, nNi2L and nZn2L complexes in

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Biradar, Vivekanand D., and B. H. M. Mruthyunjayaswamy. "Synthesis Characterization and Antimicrobial Activity Studies of Some Transition Metal Complexes Derived from 3-Chloro-N′-[(1E)-(2-hydroxy phenyl)methylene]-6-methoxy-1-benzothiophene-2-carbohydrazide." Scientific World Journal 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/451629.

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A series of new coordination complexes of Cu(II), Co(II), Ni(II), Zn(II), Hg(II), Mn(II), and Fe(III) with the Schiff base 3-chloro-N′-[(1E)-(2-hydroxy phenyl)methylene]-6-methoxy-1-benzothiophene-2-carbohydrazide (HL) have been synthesized and characterized by elemental analysis, electrical conductivity measurements, IR spectra,1H NMR, mass spectral data, electronic spectra, magnetic susceptibility, ESR spectra, TGA, and Powder XRD data. The Schiff base behaves as tridentate ONO donor ligand and forms the complexes of the type ML2(metal-ligand) stoichiometry for Cu(II), Co(II), Ni(II), and Mn

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Al-Salim, T., J. S. Hadi, E. A. Al-Nasir, and M. A. Hassen. "The Transfer Hydrogenation Reactions Catalyzed by Rhodium Schiff Base Complexes." Journal of Scientific Research 2, no. 3 (2010): 501. http://dx.doi.org/10.3329/jsr.v2i3.4341.

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Three new Schiff base rhodium (III) complexes, derived from three ligands, L1, L2 and L3 have been prepared and characterized by IR, 1HNMR, mass spectra and the elemental analysis. These complexes have shown efficient catalytic activity in the transfer hydrogenation of wide variety ketones to the corresponding alcohols in formic acid/triethylamine solution under mild reaction conditions. Depending on the ketone, the percentage of conversion for RhL1 have been found to be (51-92%) compared to RhL2 which had a yield of (42-92%) while for RhL3 (71-94%), within time range of 0.5-12 hrs. Keywords:

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20

Srivastva, Abhay Nanda, Sayanwita Panja, Netra Pal Singh, and Chandra Kiran Shriwastaw. "Bioactive Metal Complexes of Schiff Base Derived from 2,3-Dioxobutane, Ethane-1,2-diamine and 4-Chloro-2-formylphenol: Spectral Studies and in vitro Antimicrobial Activity." Asian Journal of Chemistry 33, no. 12 (2021): 3063–69. http://dx.doi.org/10.14233/ajchem.2021.23478.

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A novel series of trivalent coordination complexes was synthesized by the reaction between a chloride/ acetate salt of iron, chromium, cobalt or manganese ions and NNNNOO type persuasive Schiff base ligand synthesized from 2,3-dioxobutane, ethane-1,2-diamine and 4-chloro-2-formylphenol. Synthesized compounds were characterized by using elemental analysis, molar conductance, magnetic moment, IR, UV-visible, 1H NMR, 13C NMR and ESI-MS spectral analyses. IR and NMR spectra favoured hexadentate coordination behaviour of ligand. Electronic spectra and magnetic moment data reveal Oh geometry with di

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ADO, I., J. NA’ALIYA, S. SANI, and M. M. HALEELU. "Synthesis, spectroscopic and antimicrobial studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes derived from benzoic acid bidentate Schiff base ligand." Journal of Applied Sciences and Environmental Management 25, no. 9 (2021): 1599–603. http://dx.doi.org/10.4314/jasem.v25i9.9.

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The Schiff base was synthesized by condensation of 2-hydroxy-1-naphthaldehyde with 3- aminobenzoic acid in 1:1 molar ratio. The Schiff base ligand formed complexes with Co (II), Ni (II), Cu (II) and Zn (II) acetate via mechanochemical synthesis. The synthesized compounds were characterized by solubility test, thermal analysis, FT-IR, powder x-ray diffraction, molar conductance measurement, magnetic susceptibility and elemental analysis. The Schiff base has a melting point of 190 oC. The decomposition temperature of complexes was found to be in the range 289 – 302 oC. The Schiff base and its me

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Mishra, A. P., A. Tiwari, S. K. Gupta, and Rajendra Jain. "Synthesis, Spectral and Antimicrobial Studies of Some Co(II), Ni(II) and Cu(II) Complexes Containing 2-Thiophenecarboxaldehyde Moiety." E-Journal of Chemistry 9, no. 3 (2012): 1113–21. http://dx.doi.org/10.1155/2012/585827.

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Some new Schiff base metal complexes of Co(II), Ni(II) and Cu(II) derived from 3-chloro-4-fluoroaniline (HL1) and 4-fluoroaniline (HL2) with 2-thiophenecarboxaldehyde have been synthesized and characterized by elemental analysis, FT-IR, FAB-mass, molar conductance, electronic spectra, ESR and magnetic susceptibility. The complexes exhibit coordination number 4 or 6. The complexes are colored and stable in air. Analytical data revealed that all the complexes exhibited 1:2 (metal: ligand) ratio. FAB-mass data show degradation pattern of the complexes. The Schiff base and metal complexes show a g

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Journal, Baghdad Science. "Synthesis and Characterization of New Heterocyclic Compounds from 2, 5- dimercapto -1, 3, 4-Thiadiazole and Their Resins." Baghdad Science Journal 13, no. 2 (2016): 275–88. http://dx.doi.org/10.21123/bsj.13.2.275-288.

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In this research, a new 1, 3, 4-Thiadiazole derivatives have been synthesized by many heterocyclic reactions. Starting from (2, 5 – dimercapto -1, 3, 4-Thiadiazole) a variety of derivatives have been synthesis. Compound (1) was synthesized by the reaction of hydrazine hydrate with carbon disulphide in absolute ethanol. The compound (1) was reacted with 1, 2-dibromoethane in presence of alkali ethanol to give the compound (2). The compound (3) was formed from the reaction of compound (2) with hydrazine hydrate. Schiff base (4) was obtained by reacting of compound (3) with the compound (p-hydrox

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Sree Devi, R. K., and S. SudhaKumari. "Synthesis, Characterization and Antimicrobial studies of Schiff base Ligand from amino acid L-arginine and its Cu(II), Ni(II),Co(II) complexesIJCTR.2019.130201." International Journal of ChemTech Research 13, no. 2 (2020): 1–8. http://dx.doi.org/10.20902/ijctr.2019.130201.

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Transition metal complexes of Cu(II), Ni(II), Co(II) with a Schiff base Ligand (R,Z)-2-(2-hydroxy-3-methoxybenzylideneamino)-5-guanidinopentanoic acid (HMA-GPA) was synthesized by the condensation of 2-hydroxy-3-methoxybenzaldehyde and L- Arginine. These were characterized by elemental analysis IR, UV, magnetic susceptibility and molar conductivity measurements. The IR spectra of the Ligand HMA-GPA and the metal complexes suggest that the Ligand coordinates the metal ion through azomethine nitrogen, carboxylate Oxygen and Oxygen of the phenolic -OH group. The electronic absorption spectra and

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Alex, Prasad M., and K. K. Aravindakshan. "Synthesis, Characterization and Thermal Decomposition Studies of Cr(III), Mn(II) and Fe(III) Complexes ofN, N'-Bis[1,3-benzodioxol-5-ylmethylene]butane-1,4-diamine." E-Journal of Chemistry 6, no. 2 (2009): 449–58. http://dx.doi.org/10.1155/2009/463024.

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A bidentate Schiff base ligand namely,N,N'-bis-1,3-benzodioxol-5-ylmethylene]butane-1,4-diamine was synthesised by condensing piperonal (3,4-dioxymethylenebenzaldehyde) with butane-1,4-diamine. Cr(III), Mn(II), Fe(III) complexes of this chelating ligand were synthesised using acetates, chlorides, bromides, nitrates and perchlorates of these metals. The ligand and the complexes were characterised by elemental analysis,1H NMR, UV-Vis and IR spectra, conductance and magnetic susceptibility measurements and thermogravimetric analysis. The thermograms of three complexes were analysed and the kineti

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Szklarzewicz, Janusz, Anna Jurowska, Agata Olszewska, Maciej Hodorowicz, Ryszard Gryboś, and Krzysztof Kruczała. "Synthesis, structure and properties of V(III,IV and V) complexes with ONO Schiff bases." Science, Technology and Innovation 4, no. 1 (2019): 37–46. http://dx.doi.org/10.5604/01.3001.0013.1505.

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The synthesis and physicochemical properties of vanadium(III,IV,V) complexes with Schiff base ligands based on 3,5-dibromo-4-methoxy-salicylaldehyde and phenylacetic hydrazide (H2L1), 5-chlorosalicylaldehyde and 4-hydroxybenzhydrazide (H2L2) and 5-chlorosalicylaldehyde and 2-hydroxybenzhydrazide (H2L3) were presented. The formulas of the complexes {[V(L1)(HL1)]·EtOH (1), [VO(L2)(phen)]·2H2O (2) and [VO(L3)(EtO)] (3)} were proposed based on the elemental analysis, IR and UV-Vis spectra. Additionally, the IR and UV-Vis spectra (in solvents as well as in a solid state) have been discussed from th

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Malik, Suman, Suparna Ghosh, Bharti Jain, Archana Singh, and Mamta Bhattacharya. "Synthesis, Characterization, and Biological Evaluation of Some 3d-Metal Complexes of Schiff Base Derived from Xipamide Drug." International Journal of Inorganic Chemistry 2013 (February 18, 2013): 1–6. http://dx.doi.org/10.1155/2013/549805.

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The present paper deals with the synthesis and characterization of metal complexes of Schiff base derived from xipamide, a diuretic drug. The bidentate ligand is derived from the inserted condensation of 5-aminosulfonyl-4-chloro-N-2,6-dimethyl phenyl-2-hydroxybenzamide (Xipamide) with salicylaldehyde in a 1 : 1 molar ratio. Using this bidentate ligand, complexes of Hg(II), Zn(II), and VO(IV) with general formula ML2 have been synthesized. The synthesized complexes were characterized by several techniques using molar conductance, elemental analysis, magnetic susceptibility, FT-IR spectroscopy,

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SUDHA, A., S. ARULMOZHI та S. J. ASKAR ALI. "Evaluation of α-Amylase Inhibitory Activity, Molecular Modeling, Total Antioxidant and Theoretical Studies of Novel Schiff Base Transition Metal Complexes". Asian Journal of Chemistry 32, № 9 (2020): 2187–94. http://dx.doi.org/10.14233/ajchem.2020.22783.

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By condensing pyrene-1-carbaldehyde and 4-aminoantipyrine, a Schiff base ligand, (Z)-1,5-dimethyl-2-phenyl-4-((pyren-1-ylmethylene)- amino)-1H-pyrazol-3(2H)-one and its Cu(II), Ni(II), Co(II) and Zn(II) complexes have been synthesized. The ligand and its metal complexes were characterized by FT-IR, UV-visible, 1H & 13C NMR, ESI-mass spectra and elemental analysis. The antidiabetic and antioxidant activities of the synthesized Schiff base ligand and its metal complexes were studied. The molecular docking study of human pancreatic α-amylase (PDB: 1HNY). Furthermore, Theoretical analysis of g

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Anjum, Afreen, Sikandar Paswan, Manoj Kumar, Habib Ali, and Raj Kumar Dubey. "Synthesis, Characterization and DFT Studies of Some Co(II) and Cu(II) Complexes of 12-Membered Tetradentate [N4] Macrocyclic Schiff Base Derived from 9,10-Phenanthrenequinone." Asian Journal of Chemistry 31, no. 4 (2019): 943–50. http://dx.doi.org/10.14233/ajchem.2019.21861.

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The structures of some coordination compounds of cobalt(II) and copper(II) with macrocyclic Schiff bases obtained by the reaction of 9,10-phenanthrenequinone with diamines synthesized in 1:1 molar ratio(s) have been elucidated by various physico-chemical methods viz. elemental analysis, IR, UV-visible, mass, ESR. The surface morphology was determined by SEM analysis. Infrared spectra suggested that ligand was coordinated to the metal ion in a tetradentate manner through azomethine nitrogen atom by the change in its stretching frequency. ESR spectra of copper(II) complexes indicates the presenc

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30

Sathiyaraj, Subbaiyan, Ganesan Ayyannan, and Chinnasamy Jayabalakrishnan. "Synthesis, spectral, dna binding and cleavage properties of ruthenium(II) Schiff base complexes containing PPh3/AsPh3 as co-ligands." Journal of the Serbian Chemical Society 79, no. 2 (2014): 151–65. http://dx.doi.org/10.2298/jsc121201073s.

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A dihydroxybenzaldehyde Schiff base ligands (L1-L3) and its ruthenium(II) complexes, have been synthesized and characterized on the basis of elemental analysis, 1H, 13C, 31P NMR, mass spectra, UV-vis and IR spectra. The binding of ruthenium(II) complexes have been investigated by UV-vis absorption spectroscopy. The experiment reveals that all the compounds can bind to DNA through an electrostatic mode and intrinsic binding constant (Kb) has been estimated under similar set of experimental conditions. Absorption spectral study indicate that the ruthenium(II) complexes has intrinsic binding cons

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31

Ibrahim, Ado, J. Na'aliya, M. M. Haleelu, and Salihu Sani. "SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDIES OF SOME DIVALENT METAL(II) COMPLEXES DERIVED FROM 1-[(4-IODO-PHENYLIMINO)-METHYL]-NAPHTHALEN-2-OL SCHIFF BASE." FUDMA JOURNAL OF SCIENCES 5, no. 3 (2021): 153–58. http://dx.doi.org/10.33003/fjs-2021-0503-681.

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Schiff base derived from condensation of 2-hydroxy-1-naphthaldehyde and 4-iodoaniline was synthesized and used for the preparation of Co(II) and Ni(II) complexes. The complexes were characterized by IR, Powder-XRD, Solubility test, thermal analysis, conductivity measurement, magnetic susceptibility and elemental micro analysis. IR study indicated a strong band in the spectra of the Schiff base at 1603 cm-1 assigned to azomethine v(C=N) stretching vibration. It shifted to new frequency regions (1618 - 1622 cm-1) in the spectra of the complexes indicating the formation of the desired complexes.

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32

Cheng, Jian-Ping, Qiu-Yue Lin, Hu Rui-Ding, Wen-Zhong Zhu, Hua-Qiong Li, and Dong-Hang Wang. "Synthesis, DNA interaction and antibacterial activities of La(III) and Gd(III) complexes of Schiff base derived from o-vanillin and lysine." Open Chemistry 7, no. 1 (2009): 105–10. http://dx.doi.org/10.2478/s11532-008-0096-2.

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AbstractTwo novel complexes, [La(HL)(H2O)2NO3] · NO3 · H2O and [Gd(HL)(H2O)2NO3] · NO3 · H2O, where HL is a Schiff base derived from o-vanillin and lysine, have been synthesized and characterized by elemental analysis, conductivity measurements, IR, 1H NMR and thermogravimetric analyses (TGA). The Schiff base ligand behaves as a tetradentate, coordinating through azomethine nitrogen, phenolic oxygen and two carboxylic oxygen atoms. The interaction of these complexes with calf thymus DNA (CT-DNA) was also investigated by spectrometric titration and viscometric measurements. The faint hypochromi

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33

Jiang, Yin Zhi, Yang Zou, and Lian Qun Zhang. "Synthesis and Crystal Structure of a New Ni²⁺Complex¹." Advanced Materials Research 441 (January 2012): 387–91. http://dx.doi.org/10.4028/www.scientific.net/amr.441.387.

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(S,S)-N,N’- bi-(benzal)-1,2-cyclohexanediamine Schiff base (1) was synthesized and characterized by 1 H NMR spectra, MS spectra and IR spectra. And the coordination reaction of 1 with chlorate of Ni(II) was studied. The reaction of 1 with NiII salt [NiCl2] generates a new compound (2). 2 was characterized using IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. Crystal data for 2: space group Coca, with a = 24.580(4)Å, b = 9.5829(13)Å, c = 7.6836(11)Å, α=90.00º, β=90.00º, γ=90.00º, Z=4, V= 1809.8(5)Å3, Dc=1.446 mg.m-3, µ=1.376 mm-1, F(000)=840. There are 6 coordination s

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34

Xu, Huo Ying, Yin Zhi Jiang, Yang Zou, and Lian Qun Zhang. "Synthesis and Crystal Structure of a New Cu²⁺ Complex." Advanced Materials Research 581-582 (October 2012): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.193.

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(R,R)-N,N’-di-(4-hydroxylbenzal)-1,2-cyclohexanediamine Schiff base(H2L) was synthesized and characterized by 1H NMR spectra, MS spectra and IR spectra. And the coordination reaction of H2L with chlorate of Cu(II) was studied. The reaction of H2L with CuIIsalt [CuCl2] generates a new compound, the title compound. The title compound was determined by IR spectra, elemental analysis and single-crystal X-ray diffraction. The title compound belongs to the monoclinic system, space group P2(1), with a = 6.6393(6)Å, b = 24.735(2)Å, c = 8.1128(7)Å, α=90.00 º, β=110.1670(10) º , γ=90.00 º, Z=2, V= 1250.

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35

Bhanuka, Sunita, Sarita Khaturia, Mamta Chahar, and Har Lal Singh. "Design, Spectroscopic Characterization and Theoretical Studies of Organotin(IV) and Organosilicon(IV) Complexes with Schiff Base Ligands Derived from Amino Acids." Asian Journal of Chemistry 32, no. 11 (2020): 2821–28. http://dx.doi.org/10.14233/ajchem.2020.22850.

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A new series of organotin(IV) and organosilicon(IV) complexes were synthesized using the Schiff base ligands [2-((3,4-dimethoxybenzylidene)amino)-3-(1H-indol-3-yl)propanoic acid (L1H) and 2-((3,4-dimethoxybenzylidene)amino)-3-methylbutanoic acid (L2H)]. The synthesized compounds were characterized by IR, NMR (1H and13C), elemental analysis and theoretical studies. The molar conductivity values of the complexes in DMF implied the presence of non-electrolyte species. Spectral data showed that in these complexes the metal atoms are coordinated with the Schiff base ligand acts as a bidentate ON mo

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36

Lele, M. J., and Dr R. G. Deshmukh. "Antimicrobial Activity of 2-((2-(hydroxyimino)-1- phenylpropylidene) Hydrazono)-1, 2- diphenylethanone (HMPPH) and its Derivative." International Journal of Innovative Science and Research Technology 5, no. 7 (2020): 1056–60. http://dx.doi.org/10.38124/ijisrt20jul804.

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A new series of Cu(II), Pt(II) and Pd(II) complexes were prepared with ligand 2-((2- (hydroxyimino)-1-phenylpropylidene) Hydrazono)-1, 2- diphenylethanone (HMPPH) corresponding to molecular formula (C23H18N3O2) has been synthesized and reported for the first time. The Schiff base and its metal complexes were characterized on the basis of various spectroscopic investigation like IR, NMR, UVVISIBLE spectroscopy, elemental analysis etc. While the geometry of the complexes was confirmed by electronic spectra, magnetic moment measurements. A preliminary screening of these compounds for biological a

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37

Ali apan, Ali apan, and G. khan Ceyhan and Mehmet S. nmez G khan Ceyhan and Mehmet S nmez. "Ru(III) Complexes of Phenoxy-İmine Ligands: Synthesis, Characterisation and Testing as Oxidation Catalysts." Journal of the chemical society of pakistan 41, no. 5 (2019): 758. http://dx.doi.org/10.52568/000796/jcsp/41.05.2019.

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A series of new mononuclear Ru(III) complexes bearing phenoxy-imine Schiff base tetradentate ligands (phenylimino, 4-chlore phenylimino, 3,4-dichlore phenylimino) have been prepared and characterized by elemental analysis, TGA, UV-VIS, FT-IR, 1H-NMR and 13C NMR spectra. The proposed structure of the ligands have a O2N2 core to form mononuclear Ru (III) complexes. Preliminary studies on the catalytic performances of the compounds in the cycloalkane oxydation are described. The catalytic effect of all Ru complexes results in the epoxidation reaction of cyclohexane, as shown in the substrate conv

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38

Jovanovic, Ljiljana, Violeta Jevtovic, Vukadin Leovac, and Luka Bjelica. "Transition metal complexes with thiosemicarbazide-based ligands, Part 49: New complexes of iron(III) with deprotonated tridentate Schiff base - pyridoxal derivatives." Journal of the Serbian Chemical Society 70, no. 2 (2005): 187–200. http://dx.doi.org/10.2298/jsc0502187j.

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Three new bis(ligand) iron(III) complexes were prepared with the deprotonated ONX ligands (X = O,S,N), pyridoxal semi-, thiosemi- and S-methylisothiosemicarbazones (H2L1, H2L2 and H2L3, respectively) of the formulas [Fe(HL1,2)L1,2].4H2O and [Fe(HL3)2]OAc.2H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, as well as by IR and UV-vis spectra. Detailed voltammetric investigations were carried out in DMF solutions in the presence of several supporting electrolytes to study the nature of the electrochemical processes and solution equilibri

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39

Dey, Dilip Kumar, Mrinal Kanti Das, and Heinrich Nöth. "Synthesis, Spectroscopy and Structure of Diorganotin(IV) Schiff Base Complexes." Zeitschrift für Naturforschung B 54, no. 2 (1999): 145–54. http://dx.doi.org/10.1515/znb-1999-0201.

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Three diorganotin(IV) chelates with a tetradentate Schiff base, H2Vanophen, [H2Vanophen = N,N′-1,2-phenylen-bis(3-methoxysalicylideneimine)] of the type R2Sn(Vanophen) (R = Ph: 1; R = n-Bu: 2; R = Me: 3) have been synthesized by the reaction of R2SnCl2 (R = Ph, n-Bu, Me) and H2 Vanophen in the presence of triethylamine in benzene. The complexes have been characterised by IR and NMR spectroscopy and by elemental analysis. The δ(119Sn) values for the complexes 1 - 3 are -543.0, -414.2 and -398.2 ppm respectively, indicating hexacoordinated Sn centers. These have been ascertained by X-ray crystal

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40

Kumar, Sanjay. "Studies on Hetero Binuclear Complexes derived from Rubidium and Caesium salt of Acetyl salicylic acid (ASPIRIN) with N, N’-1,2-ethylenebis(5-nitrosalicylaldiminato) nickel(II)." Oriental Journal Of Chemistry 38, no. 1 (2022): 193–97. http://dx.doi.org/10.13005/ojc/380124.

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Hetero binuclear complexes, [NiE5NSRbAp] and [NiE5NSCsAp], have been synthesized from Rubidium(I) and Caesium(I) salt of Acetyl salicylic acid (ASPIRIN) and N,N’-1,2-ethylenebis(5-nitrosalicylaldiminato) nickel(II) as ligand, respectively. This ligand [NiE5NS] has been prepared from Nickel(II) acetate and salen type dibasic Schiff base derived from 5-nitrosalicylaldehyde and Ethylenediamine. These novel hetero binuclear complexes obtained in pure solid state and their structures have been characterized with the help of Elemental analysis, Solubility, Magnetic property, Molar conductance measur

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41

Wang, Rong-Min, Nai-Pu He, Peng-Fei Song, Yu-Feng He, Lan Ding, and Ziqiang Lei. "Preparation of low-molecular-weight chitosan derivative zinc complexes and their effect on the growth of liver cancer cells in vitro." Pure and Applied Chemistry 81, no. 12 (2009): 2397–405. http://dx.doi.org/10.1351/pac-con-08-11-15.

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Low-molecular-weight (LMW) chitosan salicylaldehyde Schiff-base and its zinc(II) complexes were synthesized and characterized by Fourier transform-infrared (FT-IR) spectra, transmission electron microscopy (TEM), dynamic light scattering (DLS), gel permeation chromatography-multiangle laser light scattering (GPC-MALLS), and elemental analysis. The results of electrophoretic analysis suggest that the Zn complexes bound to DNA by means of electrostatic interactions and intercalation. The effect of the Zn complexes on the growth of SMMC-7721 liver cancer cells was investigated by sulforhodamine B

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42

Hussein, Tasneem Ibrahim, Musa Abduelrahman Ahmed, Ismail Adam Arbab, et al. "Synthesis, characterization and biological activity of a Schiff base derived from o-amino benzoic acid and its Co(II), Cd(II) and Ni(II) complexes." European Journal of Chemistry 11, no. 1 (2020): 15–20. http://dx.doi.org/10.5155/eurjchem.11.1.15-20.1941.

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Equimolar amounts of imidazoleacetophenone and 2-aminobenzoic acid were combined together and the Schiff base 4(1H-imidazole-yl)acetophenoneanthranilic acid was prepared as a new bidentate complexing agent. The synthesized ligand was reacted with cobalt(II), cadmium(II), and nickel(II) ions yielding air stable complexes. For quantification and characterization purposes, elemental analysis, infrared spectra, electronic spectra, proton nuclear magnetic resonance spectra and mass spectra studies were carried out on the obtained complexes and ligand. Thermogravimetric analysis and magnetic suscept

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43

Xiao, Jian-Chang, Qiong Wu, Yuan Lei, et al. "Synthesis, Single Crystal X-Ray Structure, Theoretical Studies of Triple-{MnIII-Schiff-Base}-Decorated Molybdate." Crystals 9, no. 12 (2019): 657. http://dx.doi.org/10.3390/cryst9120657.

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The design and synthesis of magnets with low dimensionality is currently an attractive research topic. The reaction of a Schiff base metal complex with simple molybdate has led to the formation of a new {MnIII-Schiff-base}-decorated molybdate heterometallic cluster, [{Mn(salpn)(H2O)}3MoO4](CH3COO)·2H2O (1) (salpn = N,N’-(1,3-propylene)bis(salicylideneiminate)). The hybrid aggregate was characterized using a range of methods including elemental analysis, single crystal x-ray diffraction, Infrared spectra (IR) spectroscopy, and x-ray structural analysis. The crystals of 1 are hexagonal: P63/m, a

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44

Alan, Ionela, Angela Kriza, Olguta Dracea, and Nicolae Stanica. "New complexes of Co(II), Ni(II), Cu(II) with Schiff base N,N’-bis-(3-methoxy-saliciliden)-3,3’-dimethylbenzidine." Journal of the Serbian Chemical Society 78, no. 7 (2013): 947–57. http://dx.doi.org/10.2298/jsc120613121a.

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The new N,N?-bis-(3-methoxy-saliciliden)-3,3?-dimetilbenzidine (H2L) Schiff base and complexes with Co(II), Ni(II) and Cu(II) of type [M(HL)Cl(H2O)] (M=Co(II), Cu(II)) [M2L(H2O)4]X2 (M=Co(II), X=ClO4 and M=Cu(II), X=NO3) and [M2L(CH3COO)2] (M=Co(II), Ni(II), Cu(II)) were synthesised. The ligand and complexes were characterized by elemental analysis, conductibility measurements, magnetic moments at room temperature, IR, NMR, UV-VIS-NIR, EPR spectra and thermogravimetric analysis. A molar ratio of 1:1 or 1:2 between ligand and metal was determined from the elemental analysis. Except for perchlor

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45

Aman, Robina, and Garima Matela. "Tin(IV) Complexes of Schiff Base Derived from Amino Acid: Synthesis and Characteristic Spectral Studies." Journal of Chemistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/637290.

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A new series of tin(IV) complexes of general formula [Sn(L-1)(Opri)2] (1), [Sn(HL-1)2(Opri)2] (2), [Sn(L-2)(Opri)2] (3), [Sn(HL-2)2(Opri)2] (4), (L is dianion of Schiff bases derived from the condensation of 2-hydroxy-1-naphthaldehyde with glycine (L-1) andLβ-alanine (L-2)) was synthesized by reaction of tin(IV) tetraisopropoxide with the ligands, in appropriate stoichiometric ratios (1 : 1 and 1 : 2). This would result in the replacement of the isopropoxide group from the tin(IV) tetraisopropoxide and hydrogen(s) from ligand with the azeotropical removal of isopropanol. An attempt has been ma

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46

Wang, Qin, Yu Huang, Jin-Sheng Zhang, and Xin-Bin Yang. "Synthesis, Characterization, DNA Interaction, and Antitumor Activities of La (III) Complex with Schiff Base Ligand Derived from Kaempferol and Diethylenetriamine." Bioinorganic Chemistry and Applications 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/354138.

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A novel La (III) complex, [LaL(H2O)3]NO3·3H2O, with Schiff base ligandLderived from kaempferol and diethylenetriamine, has been synthesized and characterized by elemental analysis, IR, UV-visible,1H NMR, thermogravimetric analysis, and molar conductance measurements. The fluorescence spectra, circular dichroism spectra, and viscosity measurements and gel electrophoresis experiments indicated that the ligandLand La (III) complex could bind to CT-DNA presumably via intercalative mode and the La (III) complex showed a stronger ability to bind and cleave DNA than the ligandLalone. The binding cons

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47

Seleem, H. S., B. A. El-Shetary, S. M. E. Khalil, and M. Shebl. "Potentiometric and spectrophotometric studies of the complexation of Schiff-base hydrazones containing the pyrimidine moiety." Journal of the Serbian Chemical Society 68, no. 10 (2003): 729–49. http://dx.doi.org/10.2298/jsc0310729s.

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Three Schiff-base hydrazones (ONN ? donors) were prepared by condensation of 2-amino-4-hydrazino-6-methylpyrimidine with 2-hydroxyacetophenone 2-methoxybenzaldehyde and diacetyl to yield 2-OHAHP, 2-OMeBHPand DHP respectively. The structures of these ligands were elucidated by elemental analysis, UV, IR, 1H-NMR and mass spectra. The metal?ligand stability constants of Mn2+, Fe3+,Co2+,Ni2+,Cu2+, Zn2+,Cd2+,UO22+ and Th4+ chelates were determined potentiometrically in two different media (75%(v/v) dioxane?water and ethanol?water) at 283, 293, 303 and 313 K at an ionic strength of 0.05 M (KNO3). Th

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48

Mounika, K., A. Pragathi, and C. Gyanakumari. "Synthesis¸ Characterization and Biological Activity of a Schiff Base Derived from 3-Ethoxy Salicylaldehyde and 2-Amino Benzoic acid and its Transition Metal Complexes." Journal of Scientific Research 2, no. 3 (2010): 513. http://dx.doi.org/10.3329/jsr.v2i3.4899.

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A new Schiff base, 3-ethoxy salicylidene amino benzoic acid (ETSAN), has been synthesized from 3-ethoxy salicylaldehyde and 2-amino benzoic acid. Metal complexes of the Schiff base were prepared from nitrate/chloride salts of Ni(II), Co(II) Cu(II) and Zn(II) in an alcoholic medium. The complexes were non-electrolytes in dimethyl sulfoxide solvent (DMSO). The chemical structures of the Schiff-base ligand and its metal complexes were confirmed by various spectroscopic studies like IR, UV-VIS, 1H NMR, 13C NMR, ESI-mass spectra, elemental analysis, molar conductance, thermogravimetric studies and

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49

Dong, Jian Fang, Bu Qin Jing, and Lian Zhi Li. "Synthesis and Crystal Structure of an Oxovanadium(IV) Complex Containing L-Phenylalanine Schiff Base and 1,10-Phenanthroline." Advanced Materials Research 1033-1034 (October 2014): 588–91. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.588.

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A new oxovanadium (IV) complex, [VO(o-van-phe)(phen)] (1) (o-van-phe = Schiff base derived from o-vanillin and L-phenylalanine, phen =1,10-phenanthroline), has been synthesized and characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. The results show that complex 1 belongs to triclinic crystal system, with P-1 space group, a=10.646(2) Å, b=11.089(3) Å, c=14.143(4) Å, α=67.374(4)°, β=79.685(4)°, γ=89.711(4)°, Z=2, V=1512.5(7) Å3, Dc =1.195 mg·m–3, μ=0.366 mm–1, F(000)=562. In the molecular structure, the V(IV) ion is six coordinated to form a distorted octah

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50

Mapari, A. K., M. S. Hate, and K. V. Mangaonkar. "Synthesis, Characterization and Antimicrobial Activity of Mixed Schiff Base Ligand Complexes of Co(II), Ni(II), Cu(II) and Zn(II)." E-Journal of Chemistry 8, no. 3 (2011): 1258–63. http://dx.doi.org/10.1155/2011/598171.

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The mixed ligand complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff basesN-(2-hydroxy-1-naphthylidene)-4-methylaniline (L1H) andN-(2-hydroxybenzylidene)-2,3-dimethylaniline (L2H) have been synthesized and characterized. The resulting complexes were characterized by elemental analysis, thermogravimetric analysis, magnetic moment measurements, conductivity measurements,1H NMR, IR, UV-visible and ESR spectral studies. The Schiff bases acts as bidentate monobasic ligands, coordinating through deprotonated phenolic oxygen and azomethine nitrogen atoms. The complexes are non-electrolytic in

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