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Journal articles on the topic 'Hydrazone complexes'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

KushalNath Mishra, Shambaditya Goswami, Kumudhavalli M.V, et al. "Hydrazones and their metal complexes: A short review on their biological potentia." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 1440–47. http://dx.doi.org/10.26452/ijrps.v11ispl4.4319.

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Hydrazones belong to complexes are beneficial in different fields for their essential role in the development of a range of stable complexes in the coordination chemistry. Different researchers have reported the various medicinal properties of hydrazones. Hydrazone and its metal complexes are useful for the detection of some organic components from pharmaceutical formulations. These metallic compounds act as a catalyst for conducting various chemical reactions and help in making different chemical complexes that are effective against bacteria, fungi, and many other microbes. Aromatic hydrazone

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2

Fatullayeva, P. A. "COMPLEXES OF METALS WITH HYDRAZONE HYDRAZIDE SALICYLIC ACID." Chemical Problems 19, no. 2 (2021): 79–83. http://dx.doi.org/10.32737/2221-8688-2021-2-79-83.

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Complexes of Cu (II), Ni (II), and Co (II) with hydrazone derivatives of salicylic acid hydrazide and 3,5-di-tert-butyl salicylic aldehyde (LH) were synthesized and the structure of these compounds studied by means of elemental analysis methods, IR and electronic spectroscopy, magnetochemistry and thermal analysis. It revealed that the complexes are monomeric and have a composition [MLXSoI] where M is a metal ion, L is a ligand, X is an inorganic anion, and Sol is a solvent molecule. LH- in the complexes behaves like a monoanionic tridentate ligand. It found that the resulting complexes exhibi

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3

Suleman, Veyan Taher, and Abdul Ghany Mohammed Al-Daher. "Synthesis, Characterization, Density Functional Theory Studies and Antioxidant Activity of Novel Hydrazone Ligands and their Metal Complexes." Oriental Journal Of Chemistry 39, no. 6 (2023): 1629–42. http://dx.doi.org/10.13005/ojc/390624.

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Novel hydrazone ligands (HL) derived from 2,5-hexandione and benzoyl hydrazine (HDBH), 2-furoyl hydrazine (HDFH), or 2-picolinoyl hydrazine (HDPH) were used to synthesize mononuclear Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes of the general formula [M(L)2].xH2O (x= 0-3). The hydrazone ligands and the isolated complexes were characterized by, spectral, thermal analysis, molar conductance, and magnetic moment measurements. Beside, density functional theory (DFT) computations have been to study structures and energetic of the ligand and its complexes. The IR spectral information suggest

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4

Zahirović, Adnan, Irnesa Osmanković, Amar Osmanović, et al. "Interaction of Copper(II) Complexes of Bidentate Benzaldehyde Nicotinic Acid Hydrazones with BSA: Spectrofluorimetric and Molecular Docking Approach." Acta Chimica Slovenica 70, no. 1 (2023): 74–85. http://dx.doi.org/10.17344/acsi.2022.7826.

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Two copper(II) complexes of 4-chloro- and 4-dimethylaminobenzaldehyde nicotinic acid hydrazones were prepared and characterized by elemental analysis, mass spectrometry, infrared and electron spectroscopy and conductometry. These rare examples of bis(hydrazonato)copper(II) complexes are neutral complex species with copper(II) center coordinated with two monoanionic bidentate O,N-donor hydrazone ligands coordinated in enol-imine form. The interaction of hydrazone ligands and corresponding copper(II) complexes with CT DNA and BSA was investigated. Copper(II) complexes are slightly effective in b

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5

Mateev, Emilio, Muhammed Tilahun Muhammed, Ali Irfan, Shubham Sharma, Maya Georgieva, and Alexander Zlatkov. "Hydrazide-hydrazones as novel antioxidants - in vitro, molecular docking and DFT studies." Pharmacia 71 (October 16, 2024): 1–8. http://dx.doi.org/10.3897/pharmacia.71.e133114.

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The pathogenesis of many diseases, such as obesity, depression, cancer, cataract, and neurodegenerative diseases, is related to the generation of reactive oxygen species (ROS). Structures possessing radical-scavenging properties act as antioxidants and they could prevent the progression of the aforementioned diseases. Therefore, the current work was focused on the resynthesis and the antioxidant evaluation of 13 hydrazide-hydrazones. Two in vitro tests - DPPH and ABTS, were applied for the determination of the antioxidant capacities. The free-radical scavenging assays displayed that the hydraz

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6

Mateev, Emilio, Muhammed Muhammed Tilahun, Ali Irfan, Shubham Sharma, Maya Georgieva, and Alexander Zlatkov. "Hydrazide-hydrazones as novel antioxidants - in vitro, molecular docking and DFT studies." Pharmacia 71 (October 16, 2024): 1–8. https://doi.org/10.3897/pharmacia.71.e133114.

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The pathogenesis of many diseases, such as obesity, depression, cancer, cataract, and neurodegenerative diseases, is related to the generation of reactive oxygen species (ROS). Structures possessing radical-scavenging properties act as antioxidants and they could prevent the progression of the aforementioned diseases. Therefore, the current work was focused on the resynthesis and the antioxidant evaluation of 13 hydrazide-hydrazones. Two <i>in vitro</i> tests - DPPH and ABTS, were applied for the determination of the antioxidant capacities. The free-radical scavenging assays displayed that the

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7

Sun, Zi-Qiang, Shun-Feng Yu, Xin-Lan Xu, Xiao-Yang Qiu, and Shu-Juan Liu. "Two Vanadium(V) Complexes Derived from Bromo and Chloro-Substituted Hydrazone Ligands: Syntheses, Crystal Structures and Antimicrobial Property." Acta Chimica Slovenica 67, no. 4 (2020): 1281–89. http://dx.doi.org/10.17344/acsi.2020.6236.

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Two vanadium(V) complexes derived from the bromo and chloro-substituted hydrazones N’-(4-bromo-2-hydroxybenzylidene)- 2-chlorobenzohydrazide (H2L1) and N’-(3-bromo-5-chloro-2-hydroxybenzylidene)-3-methylbenzohydrazide (H2L2) with the formula [VOL1(OCH3)(CH3OH)] (1) and [VOL2(OCH3)(CH3OH)] (2) were newly synthesized and characterized by IR, UV-Vis and 1H NMR spectroscopy. The structures of H2L1 and the complexes were further confirmed by single crystal X-ray diffraction. Both vanadium complexes are mononuclear, with the metal atoms coordinated by the hydrazone ligands, methanol ligands, and met

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8

Fernandez, María Alejandra, Juan Camilo Barona, Dorian Polo-Cerón, and Manuel N. Chaur. "Estudios fotoquímicos y electroquímicos de complejos lantánidos de 6-(hidroximetil)piridin- 2-carboxaldehído[2- metilpirimidina-4,6-diil] bishidrazona." Revista Colombiana de Química 43, no. 1 (2015): 5–11. http://dx.doi.org/10.15446/rev.colomb.quim.v43n1.50540.

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<p>Herein we report the synthesis of the 6-(hydroxymethyl)pyridine-2- carboxaldehyde[2-methyl-pyrimidine- 4,6-diyl]bis-hydrazone by a condensation reaction between 6-(hydroxymethyl) picolinaldehyde with 4,6-(bis-hydrazino)-2- methylpyrimidine. This bis-hydrazone can be visualized as a two-arm system which exhibits photochemical induced [E,E]/[E,Z]/[Z,Z’] isomerizations and double coordination to metal centers. Configurational changes, upon UV light irradiation, were followed over time by 1 H NMR, establishing that isomerization, in both arms, is a consecutive reaction that follows first-

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9

Liu, Yu Ting, Zhi Peng Yang, and Da Wei Yin. "Synthesis and Antibacterial Activity of Acetyl Ferrocene Hydrazine Hydrazone and its Metal Complexes." Advanced Materials Research 413 (December 2011): 459–62. http://dx.doi.org/10.4028/www.scientific.net/amr.413.459.

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Acetyl ferrocene hydrazine hydrazone and its novel metal complexes were synthesized. The structures were confirmed by elemental analysis, IR, molar conductance and thermo gravimetric analysis. The antibacterial activity was tests the result showed that the antibacterial activities of the complexes were significantly improved comparing with ligands.

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10

Mohd, Saleem, Sharma Mohita, Mahajan Simpy, N. Sheikh H., and L. Kalsotra B. "Cyano complexes of oxotungsten(IV) with aroyl hydrazone ligands." Journal of India Chemical Society Vol. 87, Nov 2010 (2010): 1385–89. https://doi.org/10.5281/zenodo.5805877.

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Department of Chemistry, University of Jammu, Jammu-180 006, Jammu & Kashmir, India <em>E-mail</em> : hnsheikh@rediffmail.com <em>Manuscript received 26 October 2009, revised 10 May 2010, accepted 17 May 2010</em> Reactions of K<sub>3</sub>Na[WO<sub>2</sub>(CN)<sub>4</sub>). 6H<sub>2</sub>O with aroyl hydrazone ligands namely benzoic acid[1-(furan-2- yl)methylene]hydrazide (BFMH), benzoic acid [(thlophene-2-yl)methylene]hydrazide (BTMH), benzoic acid[1-(thiophene- 2-yl)methyldenehydrazlde (BTEH), benzoic acid(phenylmethylene) hydrazide (BPMH) and benzoic acid[l-(anisol-3- yl)methylene

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11

Shalini, Agarwal, and Goyal Anju. "Exploring the Therapeutic Potential of Hydrazide-Hydrazone Derivatives: A Comprehensive Review." Pharmaceutical and Chemical Journal 7, no. 3 (2020): 100–107. https://doi.org/10.5281/zenodo.13954554.

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The exploration of novel compounds with antibacterial, anticancer, and anticonvulsant activities is a significant area of research due to the rising challenges posed by drug-resistant bacterial strains, cancer, and neurological disorders. The continual rise of drug-resistant bacterial strains, the complex challenges associated with cancer, and the persistent enigma of neurological disorders have fueled an ongoing quest for innovative therapeutic agents. Among the myriad compounds under investigation, hydrazide-hydrazone derivatives have emerged as promising candidates with diverse biological a

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12

Pinky and Anita Rani. "Macrocyclic Metal Complexes of Tetradentate Hydrazone Ligand: Synthesis, Characterization and its Applications." Asian Journal of Chemistry 36, no. 6 (2024): 1359–65. http://dx.doi.org/10.14233/ajchem.2024.31562.

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The condensation reaction between dimethyl tetraphthalate and hydrazine hydrate results in the formation of 4-formylbenzohydrazide, which was refluxed with malonic acid to obtain novel hydrazone ligand (FBH-L). The ligand was further subjected to coordinate with two metal salts viz. ZrCl4 and NiCl2 to synthesize respective transition metal(II) complexes. The ligand and its metal complexes were characterized by various spectral and analytical techniques like UV, FTIR, 1H NMR, 13C NMR, mass spectrometry, etc. The synthesized complexe were evaluated for their antibacterial and anti-angiogenic pro

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13

H. Al-Saadawy, Nuha. "Preparation and Characterization of novel metal complexes containing hydrazone derived from camphor and 2,4-dinitrophenyl hydrazine." University of Thi-Qar Journal of Science 6, no. 1 (2016): 45–54. http://dx.doi.org/10.32792/utq/utjsci/v6i1.54.

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Ligand The development of 2,4-dinitrophenyl hydrazine with camphor under demonstrated conditions yielded another hydrazone ligand. The structures of metel (II) for example, copper, nickel, cobalt, zinc and iron with hydrazone have been composed from reacting between copper bromide, nickel chloride hexahydrate, cobalt chloride hexahydrate, zinc chloride, and iron bromide with hydrazone in 1:2 molar ratio. The ligand and their metal complexes have been detached in a solid state. The spectroscopic date of the structures proposes their 1:2 structures which are characterized by CHN, FT-IR and 1H NM

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14

Nguyen, Quang Trung, and Phuong Nam Pham Thi. "Zinc(II) Complexes Containing Aromatic Hydrazones: Synthesis, Spectral Characterization, Luminescent Properties and a-Glucosidase Inhibition." Asian Journal of Chemistry 37, no. 5 (2025): 1191–96. https://doi.org/10.14233/ajchem.2025.33652.

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Four zinc(II) complexes were synthesized by the coordinating Zn2+ ions with novel aromatic hydrazone ligands. Based on the spectral analyses, the molecular ratio of Zn(II) ions to hydrazone ligands was established as 1:2, and a tetrahedral geometry around the zinc metal center was proposed for the synthesized aromatic hydrazone zinc(II) complexes. The aromatic hydrazone ligands probably coordinated with the metal Zn2+ via the carbonyl oxygen and deprotonated oxygen of salicyl ring. The fluorescence spectra of the synthesized zinc(II) complexes were analyzed in dichloromethane, revealing that t

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15

Owalude, S. O., V. O. Adimula, A. C. Tella, and U. B. Eke. "The facile synthesis of cationic ru(ii)-hydrazine and hydrazone complexes containing ethyldiphenylphosphine and methyldiphenylarsine ligands." Bayero Journal of Pure and Applied Sciences 15, no. 1 (2022): 147–51. http://dx.doi.org/10.4314/bajopas.v15i1.21.

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This report demonstrates a simple procedure for the preparation of three Ru(II) hydrazine and hydrazone complexes formulated as [Ru(NH2NH2)2L4][BPh4]2 (L = ethyldiphenylphosphine (3), and [Ru(NH2:CMe2)2L4][BPh4]2 (L = methyldiphenylarsine (4), L = ethyldiphenylphosphine (5). The complexes were characterized by IR, elemental analysis and 1H NMR spectroscopy. All the three complexes show N−N absorption in the range between 1031 – 1029 cm-1 indicating the presence of coordinated hydrazine. Evidence of ethyldiphenylphosphine coordination to the Ru(II) centre was further established by 31P NMR spec

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16

KASIMBI, D., K. HUSSAIN REDDY, and N. DEVANNA. "Synthesis, Spectral Characterization and Antibacterial Activity of Copper(II) Complexes of Functionalized Hydrazones." Asian Journal of Chemistry 31, no. 6 (2019): 1289–93. http://dx.doi.org/10.14233/ajchem.2019.21942.

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Copper(II) complexes having the formula CuL2 {where, L = 2-acetylthiophene acetoylhydrazone (ATAH), 2-acetylthiophene benzoylhydrazone (ATBH)} have been investigated on the basis of elemental analysis, molar conductivity measurements, magnetic susceptibility, UV-visible, IR and ESR spectral data. Non-electrolytic nature of the complexes are revealed by molar conductance data. IR spectral data suggested that hydrazones act as tridentate ligands. The spin Hamiltonian, orbital reduction and bonding parameters of complexes are calculated using ESR spectra of complexes. The compounds are screened f

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17

Lazić, M., Siniša Radulović, Tamara R. Todorović, D. M. Sladić, Ž. Tešić, and K. K. Andjelković. "Evaluation of Cytotoxic Activity of d-Metal Complexes with Hydrazone Ligands." Materials Science Forum 518 (July 2006): 513–18. http://dx.doi.org/10.4028/www.scientific.net/msf.518.513.

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Cytotoxic activity of four series of coordinated complexes of Zn(II) and Fe(II) with hydrazone/hydrazide ligands against HeLa and B16 cells was evaluated. The ligands N’,N'2- bis[(1E)-1-(2-pyridyl)ethylidene]ethanedihydrazide (H2L1) and N’,N'2-bis[(1E)-1-(2-pyridyl) ethylidene]propanedihydrazide (H2L2) and their Zn(II) complexes showed IC50 values in the low micromolar range, while the other ligands and complexes were less active or inactive.

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18

Zhang, Ling, Jian-Hui Zhang, and Da-yuan Zhu. "Synthesis, characterisation and antitumour activities of gallic acid hydrazone and its rare earth complexes." Journal of Chemical Research 2008, no. 11 (2008): 630–32. http://dx.doi.org/10.3184/030823408x371326.

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A new gallic acid hydrazone, 3,4,5-trihydroxybenzoyl salicylaldehyde hydrazone, and its four rare earth complexes, [LnL (OAc)2] • H2O (Ln = La3+, Sm3+, Tb3+, Dy3+), have been synthesised and characterised on the basis of elemental analyses, molar conductivity, IR and 1H NMR spectra. The antitumour activities of the prepared compounds have also been evaluated. The results indicate that Gallic acid hydrazone and its four complexes synthesised possess antitumour activity to some extent, and the four complexes show higher antitumour activity against the human leukaemia cell line HL-60 than the lig

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19

Lad, Manoj N., R. M. Patil, G. B. Sathe, and B. A. Yamgar. "Synthesis, charactrization and studies on biological activity of vanadium metal complexes derived from novel Salens." Research Journal of Chemistry and Environment 26, no. 1 (2021): 104–9. http://dx.doi.org/10.25303/2601rjce104109.

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A new series of vanadium metal complexes was synthesized by reacting vanadyl sulphate with various hydrazone derivatives which were synthesized11 by condensation of 2-Hydroxy benzoyl hydrazide with different aldehydes viz. salicylaldehyde, 5-bromo salicylaldehyde, 5-chloro salicylaldehyde, 5-methoxy salicylaldehyde and 5-hydroxy salicylaldehyde. The vanadium metal complexes were characterized by using various physico-chemical techniques such as elemental analysis, molar conductance, magnetic susceptibility, electronic absorption, IR, XRD analysis and TG analysis. The vanadium metal complexes b

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20

Ion, Emilia, Mirela Calinescu, Ana Emandi, Victoria Badea, and Dumitru Negoiu. "Copper(II) Complex Compounds with Mixed Hydrazone Ligands." Revista de Chimie 59, no. 1 (2008): 12–16. http://dx.doi.org/10.37358/rc.08.1.1697.

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Three Cu(II) complex compounds with mixed hydrazone ligands have been prepared and characterized in view of their potential biological activity. The complex compounds have the formulas: [Cu(HLa)(Lc)Br], [CuLaLc] and [CuLbLc] . Na, where HLa = 4-dimethylamino benzaldehyde-2-benzothiazolyl hydrazone, H2Lb = 2-hydroxybenzaldehyde-2-benzothiazolyl hydrazone and HLc = 2-hydroxy-1-naphthyliden-N,N-dimethyl hydrazone. The complexes have been characterized by elemental and thermogravimetrical analysis, infrared, electronic and EPR spectra. EPR spectral studies of the complexes gave axial symmetry, wit

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21

Nagamani, Y. B., K. Hussain Reddy, K. Srinivasulu, D. Dhanalakshmi, and K. Anuja. "Antibacterial Activity and DNA Binding Properties of Bivalent Metal Complexes of Cuminaldehyde Acetoylhydrazone." Oriental Journal Of Chemistry 37, no. 5 (2021): 1125–31. http://dx.doi.org/10.13005/ojc/370516.

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Metallo-hydrazones having the formula [M(IBAH)2] (where, M = Ni(II), Cu(II) and Zn(II); IBAH = p-Isopropylbenzaldehyde acetoylhydrazone) are prepared and confirmed on the basis of physico-chemical and spectral analyses. Conductivity data revealed that the complexes are non-electrolytes. Metal-DNA interactions are investigated using absorption spectrophotometry. Binding constant (Kb) data revealed that the copper complex interact DNA more strongly than other complexes. Antibacterial activity studies indicated higher activity for complexes than the metal free hydrazone ligand. The copper compoun

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22

Nagamani, Y. B., K. Hussain Reddy, K. Srinivasulu, K. Anuja, and D. Dhanalakshmi. "SPECTRAL CHARACTERIZATION, DNA BINDING PROPERTIES AND ANTIBACTERIAL ACTIVITY OF NEW METALLO-HYDRAZONES." Rasayan Journal of Chemistry 15, no. 01 (2022): 41–47. http://dx.doi.org/10.31788/rjc.2022.1516648.

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Metallo-hydrazones having the formula [M(DABH)2] (Where, M = Co(II), Ni(II), Cu(II) and Zn(II); DABH = 4-dimethylaminobenzaldehyde benzoylhydrazone) are prepared and characterized based on physicochemical and spectral analyses. Molar conductivity data revealed that the complexes are non-electrolytes. Metal-DNA interactions are investigated using absorption spectrophotometry. Binding constant (Kb) data revealed that the cobalt complex interacted DNA more strongly than other complexes. Antibacterial activity studies indicated higher activity for complexes than the metal-free hydrazone ligand. Th

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23

Patra, Debashis, Subhabrata Paul, Indira Majumder та ін. "Exploring the effect of substituent in the hydrazone ligand of a family of μ-oxidodivanadium(v) hydrazone complexes on structure, DNA binding and anticancer activity". Dalton Transactions 46, № 46 (2017): 16276–93. http://dx.doi.org/10.1039/c7dt03585c.

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24

Jani, G. R., K. B. Vyas, and Zudas Franco. "Preparation and Antimicrobial Activity of s-Triazine Hydrazones of 7-Hydroxy Coumarin and Their Metal Complexes." E-Journal of Chemistry 6, no. 4 (2009): 1228–32. http://dx.doi.org/10.1155/2009/649654.

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Metal complexes of 7-hydroxy coumarin hydrazone ofs-triazine derivatives derived from 7-hydroxy-8-aceto-N-(4',6’-dichloro-1',3',5'-s-triazine) coumarin hydrazone and transition metals have been synthesized and screened for their antibacterial, antifungal and antiseptic activity. The geometry of the complexes has been proposed. The ligand system co-ordinates with the metal ion in a bidentate manner through the nitrogen atom of hydrazone group.

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Mohammed Fadhil Eesee and Subbarao M. "Synthesis, molecular docking studies, anticancer and antibacterial activities of some novel Dinuclear Nickel (II) Complexes 2, 4-Dihydroxy acetyl-4-Hydroxybenzoic Hydrazone." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 2407–16. http://dx.doi.org/10.26452/ijrps.v11ispl4.4487.

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Substituted 2, 4-Dihydroxyacetyl-4-Hydroxybenzoic Hydrazone, which is known for their versatile biological activities, have been reported to show significant anti lung cancer activities. In the present study, a novel series of some 2, 4-Dihydroxyacetyl-4-Hydroxybenzoic Hydrazone ligands were complexed with Nickle and synthesized to develop more potent anti-cancer activities. The Ni complexes were synthesized in good to excellent yields, and equimolar solutions of 2, 4-dihydroxyacetophenone in methanol and 4-hydroxy benzoic hydrazide in hot aqueous ethanol were refluxed for two hours on a water

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A. Mustafa, Nuha, and Sahbaa Ali Ahmed. "Design, synthesis, characterization, DFT, molecular docking, and in vitro screening of metal chelates incorporating Schiff base." Bulletin of the Chemical Society of Ethiopia 38, no. 6 (2024): 1625–38. http://dx.doi.org/10.4314/bcse.v38i6.10.

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Hydrazones, with an azomethine -NHN=CH group, are extensively researched due to their easy preparation and numerous pharmaceutical benefits. A hydrazone derivative was formed by combining N,N-dimethyl amino benzaldehyde (1) and hydrazine hydrate (2), producing-4-(methanehydrazonoyl)-N,N-dimethylaniline (3). The final product (H1L) ligand was produced by reacting with ethyl acetate. The new complexes were formed by reacting Co(II), Ni(II), Cu(II), and Zn(II) with the ligand in a 1M:2L molar ratio. Complexes were synthesized with high yields. Metal chelate structures were identified through elem

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Fazylov, S., O. Nurkenov, I. Pustolaikina, et al. "CLATHRATE COMPLEXES OF HYDRAZONES OF 2- AND 4-HYDROXYBENZOIC ACIDS WITH CYCLODEXTRINS AND THEIR PROPERTIES." Chemical Journal of Kazakhstan, no. 1 (March 27, 2025): 25–36. https://doi.org/10.51580/2025-1.2710-1185.03.

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The paper presents the results of a study on the preparation of water-soluble complexes of inclusions of 4- and 2-hydroxyhydrazides of benzoic acid and their hydrazones with cyclodextrins (β-CD, γ-CD) in an aqueous alcohol solution. Methods. The complexation of the obtained hydrazones with --, -, -cyclodextrins was studied in silico using molecular docking and modeling methods. Results and discussion. All the investigated hydrazones demonstrated the best value of binding affinity with β -cyclodextrin. The efficiency of binding of the studied hydrazones to cyclodectrins is provided primarily

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Radunsky, Christian, Jutta Kösters, and Jens Müller. "Chromogenic behaviour of a family of hydrazine and hydrazone metal complexes." Inorganica Chimica Acta 428 (March 2015): 14–20. http://dx.doi.org/10.1016/j.ica.2015.01.012.

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Al Nasr, Ibrahim S., Waleed S. Koko, Tariq A. Khan, Rainer Schobert, and Bernhard Biersack. "Old Dogs with New Tricks: Antiparasitic Potential of Structurally Diverse 5-Nitrofuran and 5-Nitrothiophene Imines and Acyl Hydrazones." Scientia Pharmaceutica 91, no. 3 (2023): 44. http://dx.doi.org/10.3390/scipharm91030044.

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Miscellaneous imines and acyl hydrazones were prepared from 5-nitrofuraldehyde and 5-nitrothiophene-2-carboxaldehyde. Their activities against Toxoplasma gondii and Leishmania major parasites were evaluated. Promising antiparasitic effects and selectivities were observed for certain acyl hydrazones and imines. Cobalt(II) and copper(II) complexes conserved the high anti-Toxoplasma activities of 3-hydroxy-2-naphthoic carboxyl hydrazone (2a). In addition, sound activities against L. major promastigotes were observed for various analogs of 2a (2b and 2i) and pyrid-2-ylpyrazole-based imines (3g and

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Muhammad Ikram, Muhammad Ikram, Sadia Rehman Sadia Rehman, Muhammad Ayaz Muhammad Ayaz, et al. "Synthesis, Spectral, Thermal and DPPH Scavenging Studies of the Hydrazone Derived Transition Metal Complexes." Journal of the chemical society of pakistan 42, no. 6 (2020): 888. http://dx.doi.org/10.52568/000691.

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Schiff base ligand 2,2-{benzene-1,4-diylbis[(E)methylylidene(1E,2E)hydrazine-2,1-diylidene(E)methylidene]}diphenol (H2-BHMD) was synthesized by reacting together the ortho vaniline and 1,4-bis(hydrazonomethyl)benzene. It was characterized by analytical and spectroscopic techniques including 1H-NMR, elemental analysis, FT-IR, and UV-Visible studies. Different transition metal ions like Co (II), Ni (II), Cu (II) and Zn (II) were reacted with well characterized ligand to obtain the metal derivatives. AAS, elemental analysis, FT-IR, molar conductance and UV-Visible methods were used to study the m

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Muhammad Ikram, Muhammad Ikram, Sadia Rehman Sadia Rehman, Muhammad Ayaz Muhammad Ayaz, et al. "Synthesis, Spectral, Thermal and DPPH Scavenging Studies of the Hydrazone Derived Transition Metal Complexes." Journal of the chemical society of pakistan 42, no. 6 (2020): 888. http://dx.doi.org/10.52568/000691/jcsp/42.06.2020.

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Schiff base ligand 2,2-{benzene-1,4-diylbis[(E)methylylidene(1E,2E)hydrazine-2,1-diylidene(E)methylidene]}diphenol (H2-BHMD) was synthesized by reacting together the ortho vaniline and 1,4-bis(hydrazonomethyl)benzene. It was characterized by analytical and spectroscopic techniques including 1H-NMR, elemental analysis, FT-IR, and UV-Visible studies. Different transition metal ions like Co (II), Ni (II), Cu (II) and Zn (II) were reacted with well characterized ligand to obtain the metal derivatives. AAS, elemental analysis, FT-IR, molar conductance and UV-Visible methods were used to study the m

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32

Silva-Caldeira, Priscila Pereira, Antônio Carlos Almendagna de Oliveira Junior, and Elene Cristina Pereira-Maia. "Photocytotoxic Activity of Ruthenium(II) Complexes with Phenanthroline-Hydrazone Ligands." Molecules 26, no. 7 (2021): 2084. http://dx.doi.org/10.3390/molecules26072084.

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This paper reports on the synthesis and characterization of two new polypyridyl-hydrazone Schiff bases, (E)-N′-(6-oxo-1,10-phenanthrolin-5(6H)-ylidene)thiophene-2-carbohydrazide (L1) and (E)-N′-(6-oxo-1,10-phenanthrolin-5(6H)-ylidene)furan-2-carbohydrazide (L2), and their two Ru(II) complexes of the general formula [RuCl(DMSO)(phen)(Ln)](PF6). Considering that hydrazides are a structural part of severa l drugs and metal complexes containing phenanthroline derivatives are known to interact with DNA and to exhibit antitumor activity, more potent anticancer agents can be obtained by covalently li

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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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S., JAY ASREE, and K. ARAVINDAKSHAN K. "Synthesis and Physicochemical Investigation of Metal Complexes with Hydrazone and Isonicotinoylhydrazone of Acetoacetanilide." Journal of Indian Chemical Society Vol. 71, Feb 1994 (1994): 97–100. https://doi.org/10.5281/zenodo.5893982.

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<em>Department of Chemistry, University of Calicut, Calicut-673 635 Manuscript received 13 November 1992, revised 11 March 1993, accepted 30 April 1993</em> Synthesis and Physicochemical Investigation of Metal Complexes with Hydrazone and Isonicotinoylhydrazone of Acetoacetanilide

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35

Devendra, Kumar, and Neelam. "Synthesis, spectral and antimicrobial activity of CoII, NiII, CuII and ZnII metal complexes of 1-(1-(furan-2-yl)ethylidene)-2-( (3-methyl-2H-benzo[ e] [1 ,2,4]oxadiazin-2-yl) (phenyl)methylene )hydrazine." Journal of Indian Chemical Society Vol. 89, May 2012 (2012): 665–69. https://doi.org/10.5281/zenodo.5763356.

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Department of Chemistry, Institute of Basic Sciences, Dr. B. R. Ambedkar University, Khandari Campus, Agra-282 002, Uttar Pradesh, India <em>E-mail</em> : dev _ ku mar26@ indiatimes. com <em>Manuscript received 29 December 2010, revised 20 May 2011, accepted 07 September 2011</em> Co<sup>II</sup>, Ni<sup>II</sup> , Cu<sup>II</sup> and Zn<sup>II</sup> complexes of l-(1-(furan-2-yl)ethylidene)-2-((3-methyi-2<em>H</em>-benzo{e)(l,2,4]oxadiazin-2-yl)(phenyl)mcthylene)hydrazine have been synthesized and characterized by TLC, elemental analyses,<strong> </strong>IR, <sup>1</sup>H NMR,

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36

Wang, Fu-Ming, Li-Jie Li, Guo-Wei Zang, Tong-Tong Deng, and Zhong-Lu You. "Synthesis, Characterization, Crystal Structures, and Urease Inhibition of Copper(II) and Zinc(II) Complexes Derived from Benzohydrazones." Acta Chimica Slovenica 67, no. 4 (2020): 1155–62. http://dx.doi.org/10.17344/acsi.2020.6056.

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A new copper(II) complex [Cu(L1)(NCS)(CH3OH)] (1) and a new zinc(II) complex [ZnCl2(HL2)] · CH3OH (2), derived from 4-bromo-N’-(pyridin-2-ylmethylene)benzohydrazide (HL1) and 4-methoxy-N’-(pyridin-2-ylmethylene)benzohydrazide (HL2), were prepared and characterized by elemental analysis, IR and UV-Vis spectroscopy and single crystal X-ray diffraction. The hydrazone HL1 coordinates to the Cu atom in enolate form, while the hydrazone HL2 coordinates to the Zn atom in carbonyl form. Single crystal structural analyses indicate that the hydrazones coordinate to the metal atoms through the pyridine N

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37

O. Eberendu, K., C. I. Nwankwo, O. M. Mac-kalunta, et al. "New (2Z)-1-(2,4-dinitrophenyl)-2-[(2E)-3-(2-nitrophenyl)prop-2-en-1-ylidene]hydrazine and its V(II) and Ni(II) complexes: synthesis, characterization and in silico sars-CoV-2 inhibition studies." Bulletin of the Chemical Society of Ethiopia 39, no. 4 (2025): 673–86. https://doi.org/10.4314/bcse.v39i4.6.

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Hydrazones are an important family of compounds with an azomethine proton (-NHN=CH-), which have been reported to possess high biological activity such as antioxidants, anti-consultants, analgesics, antimicrobial, anti-protozoals, anti-parasitic, anti-platelets, cardio-protective, anti-diabetic, anti-HIV and anti-helminthic. This research was aimed at synthesizing a new aniline hydrazone and its V(II) and Ni(II) complexes, and in silico SARS-CoV-2 inhibition studies. The (2Z)-1-(2,4-dinitrophenyl)-2-[(2E)-3-(2-nitrophenyl)prop-2-en-1-ylidene]hydrazine (DNEAA) was synthesized by the reaction of

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38

Alghamdi, Israa A., Mohamed Abdelbaset, and Ines El Mannoubi. "Mixed Ligand Complexes of Copper(II) and Cobalt(II) with Hydrazones Derivatives and ortho-Vanillin: Syntheses, Characterizations and Antimicrobial Activity." Oriental Journal of Chemistry 35, no. 6 (2019): 1722–30. http://dx.doi.org/10.13005/ojc/350614.

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The purpose of this paper was to synthesis new mixed-ligand Cu(II) and Co(II) metal complexes utilizing bidentate and tridentate donor hydrazones derivatives as primary ligands and o-vanillin as co-ligand. The obtained compounds were characterized by elemental analysis, Infrared, UV-Vis., 1H-NMR, Mass spectra, molar conductance, thermal analysis and atomic absorption spectroscopy (ASS). Spectroscopic analysis results indicated that the hydrazone ligand (L1) behave as tridentate (ONO) and forms metal complexes having distorted square planar geometry. While the ligands (L2, L3 AND L4) behave as

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39

Krishnankutty, K., Basheer Ummathur, and Perumpalli Ummer. "1-naphthylazo derivatives of some 1,3-dicarbonyl compounds and their Cu (II), Ni(II) and Zn(II) complexes." Journal of the Serbian Chemical Society 74, no. 11 (2009): 1273–82. http://dx.doi.org/10.2298/jsc0911273k.

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The coupling of diazotized 1-aminonaphthalene with 1,3-dicarbonyl compounds (acetylacetone, methylacetoacetate and acetoacetanilide) yielded a new series of bidentate ligand systems (HL). Analytical, IR, 1H-NMR and mass spectral data indicate that the compounds exist in the intramolecularly hydrogen bonded keto-hydrazone form. With Ni(II), Cu(II) and Zn(II), these potential monobasic bidentate ligands formed [ML2] type complexes. The IR, 1H- -NMR and mass spectral data of the complexes are consistent with the replacement of the chelated hydrazone proton of the ligand by a metal ion, thus leadi

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Prasad, Surendra, and Ram K. Agarwal. "Nickel(II) Complexes of Hydrazone of Isoniazid and Their Magneto-Spectral, Electrochemical, Thermal and Antimicrobial Investigations." Research Letters in Inorganic Chemistry 2008 (December 1, 2008): 1–4. http://dx.doi.org/10.1155/2008/350921.

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The synthesis of novel nickel(II) complexes with new ligand derived from hydrazone of isoniazid has been reported. The complexes have general compositions [Ni(L)2X2] or [Ni(L)3](ClO4)2, where L = N-isonicotinamido-furfuraldimine (INH-FFL) and X=Cl− or NCS−. The ligand hydrazone behaves as neutral bidentate (N and O donor) through the carbonyl oxygen and azomethine nitrogen. On the basis of elemental analysis, molecular weight determinations, magnetic susceptibility/moment, thermogravimetric, electrochemical, and spectroscopic studies, the new complexes have been characterized with octahedral g

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Adhikary, Amit, Javeed Ahmad Sheikh, Soumava Biswas, and Sanjit Konar. "Synthesis, crystal structure and study of magnetocaloric effect and single molecular magnetic behaviour in discrete lanthanide complexes." Dalton Trans. 43, no. 24 (2014): 9334–43. http://dx.doi.org/10.1039/c4dt00540f.

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Mohamad, Hikmat Ali. "Synthesis and characterization of Phenyl bis- hydrazone complexes with Pd (II), Mn (II), Ni (II) and Fe(III) ions." Journal of Wasit for Science and Medicine 2, no. 1 (2022): 209–26. http://dx.doi.org/10.31185/jwsm.45.

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A new ligand of phenyl bis-hydrazone (V) was been synthesized as a result of a reaction between phenyl-isatin hydrazone and salicyladehyde. The yellow crystals of (V) was been studied using IR, 1H.n.m.r 13C-n.m.r, UV-Vis spectrum and molar conductivity measurements. The complexes of Palladium (II), Nickel (II), Manganese (II) and Iron (III) with phenyl bis-hydrazone have been synthesized and characterized on based on molar conductivity, magnetic susceptibility data, UV-Vis and IR spectral studies. The spectral data referred to that the ligand acts as monobasis tridentate, coordinating through

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43

Amadi, Ugochukwu B., Martin O. C. Ogwuegbu, Conrad K. Enenebeaku, and Gerald O. Onyedika. "A Review on Synthesis, Lanthanide Complexes and Biological Activites of Hydrazone Derivatives of Hydrazinecarbothioamides." International Research Journal of Pure and Applied Chemistry 24, no. 5 (2023): 54–63. http://dx.doi.org/10.9734/irjpac/2023/v24i5825.

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Hydrazinecarbothioamides are important intermediates with biological activities in organic chemistry synthesis, especially in the synthesis of biologically active heterocyclic scaffolds and compounds. The uniqueness in of synthesis and a wild range of pharmaceutical, medicinal biological potentials and properties, their preferred application as building brick in and the synthesis of heterocyclic and other important organic compounds and nonlinear optical (NLO) materials have made them attractive derivatives of thiosemicarbazides in the recent years. In this review, a detailed account in terms

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44

Zhang, Dingjun, Wenjin Zhao, Zhaoxuan Feng, et al. "Preparation of polymer–rare earth complexes based on Schiff-base-containing salicylic aldehyde groups attached to the polymer and their fluorescence emission properties." e-Polymers 19, no. 1 (2019): 15–22. http://dx.doi.org/10.1515/epoly-2019-0003.

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AbstractIn this study, the salicylaldehyde hydrazone was bonded onto the side chains of poly (styrene-co-butyl acrylate), firstly obtaining a series of novel Schiff base-functionalized polymers. and using the base-containing polymers as macromolecular ligands through further reaction with EuCl3/YbCl3·6H2O, a series of polymer-rare earth complexes based on Eu(III)/Yb(III) ion were successfully prepared. The structures of the schiff base-containing polymers and their corresponding complexes were characterized by means of infrared spectra and UV spectra. The thermal properties of the functionaliz

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45

Megger, Dominik A., Kristin Rosowski, Christian Radunsky, Jutta Kösters, Barbara Sitek, and Jens Müller. "Structurally related hydrazone-based metal complexes with different antitumor activities variably induce apoptotic cell death." Dalton Transactions 46, no. 14 (2017): 4759–67. http://dx.doi.org/10.1039/c6dt04613d.

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Three new metal complexes bearing a tridentate hydrazone-based ligand were synthesized and structurally characterized. Depending on the metal ion, the complexes show remarkably different antitumor activities.

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46

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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Souza, P., M. A. Mendiola, A. Arquero, V. Fernández, E. Gutiérrez-Puebla, and C. Ruiz-Valero. "Copper(II) Complexes of Hydrazone Derivatives." Zeitschrift für Naturforschung B 49, no. 2 (1994): 263–71. http://dx.doi.org/10.1515/znb-1994-0219.

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Three benzil based, macrocyclic oxygen-, nitrogen-, and sulfur-containing ligands, (3,4,10,11 -tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca-7,14-dithione-2,4,9,11 -tetraene) ethanol (L1), 10,1 l-diethoxy-3,4,10,11-tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca- 7.14-dithione-2,4-diene (L2), (3,4,10,11 -tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca- 7.14-dione-2,4,9,l 1-tetraene) ethanol (L3); a cyclic ligand, 6-ethoxy-l,6-diphenyl-4-oxo- 3,4,5,6-tetrahydro-2,3,5-triazine (L5) and two open chain ligands, benzilsemicarbazone (L6) and benzilbisthiosemicarbazone (L4) are reported

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48

Devendra, Kumar, and Neelam. "Synthesis, spectral and antimicrobial evaluation of CoII, NiII, CuII and ZnII metal complexes of N-(furan-2-yl)-methylene-N-[(3-methyl-2H-benzo[e][1,2,4]- oxadiazin-2-yl)-phenyl-methylene]-hydrazine." Journal of Indian Chemical Society Vol. 92, Mar 2015 (2015): 319–24. https://doi.org/10.5281/zenodo.5678272.

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Department of Chemistry, Institute of Basic Sciences, Dr. B. R. Ambedkar University, Khandari Campus, Agra-282 002, Uttar Pradesh, India <em>E-mail </em>: devendrakumar131@gmail.com <em>Manuscript received online 20 August 2013, revised 30 August 2014, accepted 06 October 2014</em> A novel series of metal complexes of Co<sup>II</sup>, Ni<sup>II</sup>, Cu<sup>II</sup> and Zn<sup>II</sup> of <em>N</em>-(furan-2-yl)-methylene-<em>N</em>-[(3-methyl-2<em>H</em>-benzo[<em>e</em>][1,2,4]oxadiazin-2-yl)-phenyl-methylene]-hydrazine were synthesized and characterized by their melting point determination

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Cho, Hye Jin, TaeWoo Kim, Hyunwoo Kim, and Changsik Song. "Solid-State Emissive Metallo-Supramolecular Assemblies of Quinoline-Based Acyl Hydrazone." Sensors 20, no. 3 (2020): 600. http://dx.doi.org/10.3390/s20030600.

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Development of fluorescence-based sensory materials for metal elements is currently in the mainstream of research due to the simplicity and usability of fluorescence as a method of detection. Herein, we report a novel “bis”-quinoline-based acyl hydrazone—named bQH that could be synthesized by a facile, low-cost method through simple condensation of hydrazide with an aldehyde. This acyl hydrazone showed emissive properties through Zn selective binding, especially in its solid-state, as shown by experiments such as UV–Vis, photoluminescence (PL), nuclear magnetic resonance (NMR), and inductively

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50

Affan, M. A., B. A. Fasihuddin, Y. Z. Liew, S. W. Foo, and J. Ismail. "Synthesis, Spectroscopic Characterization and Antibacterial Activity of Organotin(IV) Complexes Containing Hydrazone Ligand: X-ray Single Crystal Structure of [n-Bu₂Sn(H₂PAI).H₂O]." Journal of Scientific Research 1, no. 2 (2009): 306–16. http://dx.doi.org/10.3329/jsr.v1i2.1775.

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Five new organotin(IV) complexes with pyruvic acid isonicotinoyl hydrazone [H4PAI (1)] of the general formula [Me2Sn(H2PAI)] (2), [R2Sn(H2PAI).H2O] [R=n-Bu, (3) or Ph, (4)], [RSnCl(H2PAI).H2O] [R=Me (5) or Ph (6)] have been synthesized in the presence of base in absolute methanol in 1:2:1 mole ratio (metal:base:ligand). All organotin(IV) complexes are characterized by elemental analyses, molar conductance values, UV-Visible, IR and 1H NMR spectral studies. The crystal structure of organotin(IV) complex (3) has also been determined by X-ray crystallography diffraction analyses. Complex [n-Bu2Sn

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