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Journal articles on the topic 'Hydrazone complex'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Pogonin, Aleksandr E., George A. Gamov, Maksim N. Zavalishin, and Valentin A. Sharnin. "CONFORMATIONAL BEHAVIOR OF HYDRAZONE DERIVED FROM PYRIDOXAL 5’-PHOSPHATE AND ISONIAZID." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 12 (2018): 101–7. http://dx.doi.org/10.6060/ivkkt.20186112.5846.

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The hydrazones derived from pyridoxal or pyridoxal 5’-phosphate and heterocyclic hydrazides are of interest due to their potential biological activity and metal sensing properties. These characteristics of hydrazones could be dependent on the conformation equilibria of molecule since the most stable conformer could differ from the one with the highest affinity towards biomolecule or metal ion. In the present contribution, deprotonated hydrazone formed by pyridoxal 5’-phosphate and isoniazid (PLP-INH3-) was studied by means of quantum chemistry. Three rotations leading to eight conformers are p

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2

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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3

Dinda, Soumitra, Tamanna Sultana, Suhana Sultana, et al. "Ruthenocycles of benzothiazolyl and pyridyl hydrazones with ancillary PAHs: synthesis, structure, electrochemistry and antimicrobial activity." New Journal of Chemistry 44, no. 26 (2020): 11022–34. http://dx.doi.org/10.1039/d0nj01447h.

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The antimicrobial activity of ruthenocycles of pyridyl and benzothiazolyl hydrazones has been investigated. The study established that such activity is comparatively higher for the complex containing benzothiazolyl hydrazone.

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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

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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6

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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7

Al-Humaidi, Jehan Y., Mohamed G. Badrey, Ashraf A. Aly, et al. "Evaluation of the Binding Relationship of the RdRp Enzyme to Novel Thiazole/Acid Hydrazone Hybrids Obtainable through Green Synthetic Procedure." Polymers 14, no. 15 (2022): 3160. http://dx.doi.org/10.3390/polym14153160.

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The viral RNA-dependent RNA polymerase (RdRp) complex is used by SARS-CoV-2 for genome replication and transcription, making RdRp an interesting target for developing the antiviral treatment. Hence the current work is concerned with the green synthesis, characterization and docking study with the RdRp enzyme of the series of novel and diverse hydrazones and pyrazoles. 4-Methyl-2-(2-(1-phenylethylidene)hydrazineyl)thiazole-5-carbohydrazide was prepared and then condensed with different carbonyl compounds (aldehydes and ketones either carbocyclic aromatic or heterocyclic) afforded the correspond

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8

Yates, Ronald L., and John A. Wenninger. "Fluorometric Determination of Benzylideneacetone in Fragrance Products by Liquid Chromatography with Post-Column Derivatization." Journal of AOAC INTERNATIONAL 71, no. 5 (1988): 965–67. http://dx.doi.org/10.1093/jaoac/71.5.965.

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Abstract A method is described for the liquid chromatographic (LC)-fluorometric determination of benzylideneacetone in fragrance products. Benzylideneacetone is first separated from other fragrance ingredients by LC and then reacted post-column with a methanolic solution of isonicotinic acid hydrazide and aluminum nitrate. The reactants are maintained at 65°C for about 1.5 min to quantitatively form the fluorescent isonicotinoyl hydrazone derivative of benzylideneacetone. The aluminum ion forms a complex with the hydrazone to enhance the fluorescence of the derivative. The amount of benzyliden

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9

Bipul, Mondal, G. B. Drew Michael, and Ghosh Tapas. "Dimorphosim of a dimethoxy bridged oxovanadium(V)-hydrazone complex." Journal of Indian Chemical Society Vol. 87, Mar 2010 (2010): 339–43. https://doi.org/10.5281/zenodo.5779058.

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Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata-700 118, India <em>E-mail :</em> ictg_64@yahoo.co.in Department of Chemistry, The University of Reading, P.O. Box 224, Whiteknights, Reading RG6 6AD, UK <em>Manuscript received 12 June 2009, revised 9 September 2009. accepted 14 September 2009</em> A monoclinic variety with <em>C2/c </em>space group of tile title complex [V<sup>v</sup>O(L)(OCH<sub>3</sub>)<sub>2</sub> incorporating the doubly deprotonated benzoyl hydrazone of 2-hydroxy-S-methylacetophenone (H<sub>2</sub>L) was synthesized from the decom

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10

Liu, Zhi-Qiang, Yoke Mooi Ng, Pei Jen Tiong, et al. "Five-Coordinate Zinc(II) Complex: Synthesis, Characterization, Molecular Structure, and Antibacterial Activities of Bis-[(E)-2-hydroxy-N′-{1-(4-methoxyphenyl)ethylidene}benzohydrazido]dimethylsulfoxidezinc(II) Complex." International Journal of Inorganic Chemistry 2017 (June 15, 2017): 1–8. http://dx.doi.org/10.1155/2017/7520640.

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The titled Zn(II) complex was synthesized by reacting the compound (E)-2-hydroxy-N′-{1-(4-methoxyphenyl)ethylidene}benzohydrazide with zinc(II) acetate dihydrate in alkaline DMSO and ethanol solution under reflux condition for 28 hours. The resulting solid was filtered and recrystallized from the mixture of ethanol and DMSO. The hydrazone Schiff base and its Zn(II) complex were characterized using 1H, 13C NMR, FTIR, UV-Vis spectroscopy, and single crystal X-ray diffraction analysis. Meanwhile, their antibacterial activities were examined using disc diffusion method. The spectral studies showed

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11

Çınarlı, Murat. "Synthesis, characterization and investigation of biological activities of Schiff base and its Ni(II) complex obtained from 2-Benzoylpyridine and 3-Hydroxy-2-naphthoic hydrazide." Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi 17, no. 2 (2024): 364–76. http://dx.doi.org/10.18185/erzifbed.1425404.

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In this paper, a new aryl hydrazone and its Nickel (II) complex were synthesized from 2-benzoylpyridine and 3-Hydroxy-2-naphthoic hydrazide. The synthesized compounds were characterized by elemental analysis, UV Vis., IR, NMR spectral studies and mass spectra. The data indicate that the metal atom is coordinated by the two ligands and that the [NiL2] complex is octahedral. The ligand is coordinated through carbonyl-O, azomethine-N, and pyridyl-N atoms. When tested against various reference bacterial strains and clinical isolates, it was discovered that the antibacterial activity of the [NiL2]

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12

Jiang, Jian, P. Liang, A. X. Li, Q. W. Xue, H. Y. Yu, and Z. L. You. "SYNTHESIS, CRYSTAL STRUCTURES AND UREASE INHIBITION OF ZINC(II) AND COPPER(II) COMPLEXES DERIVED FROM 2-AMINO-N’-(1-(PYRIDIN-2-YL)ETHYLIDENE)BENZOHYDRAZIDE." Журнал структурной химии 64, no. 3 (2023): 106985. http://dx.doi.org/10.26902/jsc_id106985.

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Two mononuclear zinc(II) and copper(II) complexes, [ZnBr(HL)(NCS)] (1) and [CuL2] (2), where HL and L are the ketone and enolate forms of 2-amino-N’-(1-(pyridin-2-yl)ethylidene)benzohydrazide (HL), have been prepared and characterized by elemental analyses, IR and UV-Vis spectroscopy, as well as single crystal X-ray diffraction studies. The Zn atom in complex 1 is in distorted square pyramidal coordination, with the pyridine N, imino N and carbonyl O atoms of the hydrazone ligand HL and the N atom of the thiocyanate ligand in the basal plane, and with the Br atom at the apical position. The Cu

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13

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

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

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14

Tameem, Abdassalam A. A., and Abdussalam S. Mohamed. "UV-Vis Spectroscopic Study on a New Synthesized 4-Hydroxy-N-[(E)-(2-hydroxyphenyl)methylidene]benzohydrazide as Calorimetric Reagent For Mg2+ Ions." Journal of Pure & Applied Sciences 21, no. 1 (2022): 83–86. http://dx.doi.org/10.51984/jopas.v21i1.1702.

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This study is concerned about the study of the chromogenic properties of hydrazone compound, i.e. 4-hydroxy-N-[(E)-(2-hydroxyphenyl)-methylidene]benzo-hydrazide towards magnesium ion recognition. The hydrazone compound was synthesized and characterized by FT-IR and NMR spectroscopy. The complexation ability of the studied ligand towards Mg2+ was investigated using UV-Vis spectroscopy. Experimental parameters that affect the ligand-metal ion complexation such as effect of solvent, standing time, metal concentration and ligand concentration were investigated. Results show that HNHMB is preferent

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15

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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16

Tai, Xi Shi, Peng Fei Li, and Li Li Liu. "Preparation, Characterization, and Catalytic Property of a Cu(II) Complex with 2-Carboxybenzaldehyde-p-Toluenesulfonyl Hydrazone Ligand." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 1 (2018): 7. http://dx.doi.org/10.9767/bcrec.13.1.1012.7-13.

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Metal-organic complex hybrid materials constructed from carboxylate ligands and hydrazone ligands have exhibited potential application in many fields. In order to enrich the applications of the metai-organic complex materials, a new hydrazone ligand contains carboxylate group, 2-carboxybenzaldehyde-p-toluenesulfonyl hydrazone (L1), and its Cu(II) complex (C2), have been prepared. The structure of L1 was determined by elemental analysis, IR spectra and single crystal X-ray diffraction, and the composition of Cu(II) complex (C2) has also been determined by elemental analysis, IR and UV spectra.

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17

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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18

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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19

Fawzy, Ahmed, Saleh A. Ahmed, Ismail I. Althagafi, Moataz H. Morad, and Khalid S. Khairou. "Kinetics and Mechanistic Study of Permanganate Oxidation of Fluorenone Hydrazone in Alkaline Medium." Advances in Physical Chemistry 2016 (July 25, 2016): 1–9. http://dx.doi.org/10.1155/2016/4526578.

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The oxidation kinetics of fluorenone hydrazone (FH) using potassium permanganate in alkaline medium were measured at a constant ionic strength of 0.1 mol dm−3 and at 25°C using UV/VIS spectrophotometer. A first-order kinetics has been monitored in the reaction of FH with respect to [permanganate]. Less-than-unit order dependence of the reaction on [FH] and [OH−] was revealed. No pronounced effect on the reaction rate by increasing ionic strength was recorded. Intervention of free radicals was observed in the reaction. The reaction mechanism describing the kinetic results was illustrated which

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20

Cobeljic, Bozidar, Andrej Pevec, Zvonko Jaglicic, et al. "Synthesis, characterization and antimicrobial activity of isothiocyanato Fe(III) Girard's t hydrazone complex." Journal of the Serbian Chemical Society 83, no. 12 (2018): 1327–37. http://dx.doi.org/10.2298/jsc180828079c.

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The isothiocyanato Fe(III) complex with (E)-N,N,N-trimethyl-2-oxo- -2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethan-1-aminium was synthesized and characterized by elemental analysis, IR spectroscopy and X-ray analysis. The octahedral geometry of the Fe(III) complex consists of the deprotonated form of the hydrazone ligand coordinated through the pyridine nitrogen, azomethine nitrogen and carbonyl oxygen atoms with three isothiocyanato ligands in the remaining coordination places. The measured effective magnetic moment for Fe(III) complex corresponds to high spin Fe(III) ion. The hydrazone li

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21

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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22

Mori, Asami, Takayoshi Suzuki, and Kiyohiko Nakajima. "Crystal structure of bis(2,2′-bipyridine)[N′-(quinolin-2-ylmethylidene)pyridine-2-carbohydrazide]ruthenium(II) bis(tetrafluoridoborate) dichloromethane trisolvate." Acta Crystallographica Section E Crystallographic Communications 71, no. 2 (2015): 142–45. http://dx.doi.org/10.1107/s2056989015000122.

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The title compound, [Ru(C10H8N2)2(C16H12N4O)](BF4)2·3CH2Cl2, crystallizes with one complex dication, two BF4−counter-anions and three dichloromethane solvent molecules in the asymmetric unit. The central RuIIatom adopts a distorted octahedral coordination sphere with two 2,2′-bipyridine (bpy) and one quinoline-2-carbaldehyde (pyridine-2-carbonyl)hydrazone (HL) ligand. The hydrazone ligand has aZform and coordinates to the RuIIatomviathe amide-O and imine-N atoms, affording a planar five-membered chelate ring, while its pyridine-N and quinoline-N donor atoms in the substituents are non-coordina

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23

Eswaran, Jayanthi. "SYNTHESIS, CHARACTERISATION, THERMAL ANALYSIS AND DNA CLEAVAGE ACTIVITY OF A NOVELZINC (II) COMPLEX OF PYRAZOLE SCHIFF BASES." Kongunadu Research Journal 5, no. 2 (2018): 19–23. http://dx.doi.org/10.26524/krj265.

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A hydrazone Schiff base Zn(II) metal complex is synthesised from the Shiff base ligand Thiophene-2-carboxylic acid hydrazide and 1, 3-diphenyl-1H-pyrazole-4-carboxaldehyde reacted together in 1:1 mole ratio to obtain Schiff base ligand (HL) which was subsequently, allowed to react with Zn(CH3COO)2.2H2O. The Schiff base ligand and its Zn (II) complex prepared were characterized on the basis of elemental nalysis,thermogravimetry, UV-Visible spectroscopy, FT-IR spectroscopy and NMR spectroscopy. IR spectrum of the zinc complex shows that the ligand (HL) is coordinated to the metal ion in monoanio

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24

Maza, Johnathan C., Alexandra V. Ramsey, Meire Mehare, Shane W. Krska, Craig A. Parish, and Matthew B. Francis. "Secondary modification of oxidatively-modified proline N-termini for the construction of complex bioconjugates." Organic & Biomolecular Chemistry 18, no. 10 (2020): 1881–85. http://dx.doi.org/10.1039/d0ob00211a.

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25

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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26

Taghizadeh, Mohammad Javad, Huoman Karimi, and Akbar Mirzaie. "Zeolite-encapsulated Mn(II) Complex: A New Nano Catalyst for the Synthesis of Modafinil and Its Derivatives." Letters in Organic Chemistry 16, no. 7 (2019): 541–49. http://dx.doi.org/10.2174/1570178615666180622123944.

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The Mn-hydrazone Schiff base encapsulated into NaY has been prepared and characterized as a new heterogeneous catalyst. Elemental analysis, UV-Vis, infrared spectroscopic analysis, diffused reflectance spectroscopy, thermal analysis, small angle X-ray diffraction, and N2 sorption demonstrate the existence of Mn-hydrazone schiff base in the nanopores of zeolite-Y. MnII(Hsal- hrz)/Y, which showed excellent catalytic property in oxidation with various sulfide compounds including important drugs such as adrafinil and modafinil, using hydroperoxide-urea (UHP) as oxidant. Thioanisole conversion was

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27

Tai, Xi-Shi, Peng-Fei Li, and Li-Li Liu. "Synthesis, Crystal Structure, and Catalytic Activity of a Calcium(II) Complex with 4-Formylbenzene-1,3-disulfonate-isonicotinic Acid Hydrazone." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 3 (2018): 429. http://dx.doi.org/10.9767/bcrec.13.3.1961.429-435.

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A new calcium(II) complex was synthesized by one-pot synthesis method from disodium 4-formylbenzene-1,3-disulfonate, isonicotinic acid hydrazide and Ca(ClO4)2•2H2O. The structure of calcium(II) complex was determined by elemental analysis, IR and single crystal X-ray diffraction. The results show that the Ca(II) complex molecules form 3D network structure by the interactions of π-π stacking and hydrogen bonds. The Ca(II) complex catalyst could efficiently catalyse oxidation of benzylic alcohol with good conversion of benzyl alcohol (78 %) and excellent selectivity of benzaldehyde (98 %).Copyri

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28

Su, Zhihui, Yanchao Liang, Yao Yao, Tianqi Wang, and Na Zhang. "Polymeric complex micelles based on the double-hydrazone linkage and dual drug-loading strategy for pH-sensitive docetaxel delivery." Journal of Materials Chemistry B 4, no. 6 (2016): 1122–33. http://dx.doi.org/10.1039/c5tb02188j.

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29

Heydari, Neda, Rahman Bikas, and Tadeusz Lis. "Chemical CO₂ fixation by a heterogenised Zn(ii)-hydrazone complex." RSC Advances 15, no. 8 (2025): 5977–88. https://doi.org/10.1039/d4ra09026h.

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30

Vitomirov, Teodora, Bozidar Cobeljic, Andrej Pevec, et al. "Binuclear azide-bridged hydrazone Cu(II) complex: Synthesis, characterization and evaluation of biological activity." Journal of the Serbian Chemical Society, no. 00 (2023): 44. http://dx.doi.org/10.2298/jsc230623044v.

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The condensation product of 7-acetyl-6-azaindole and Girard's T reagent ((E)-2-(2-(1-(1H-pyrrolo[2,3-c]pyridin-7-yl)ethylidene)hydrazineyl)- N,N,N-trimethyl-2-oxoethan-1-aminium, HL ligand) was used as a ligand in the reaction with Cu(BF4)2?6H2O and NaN3. The reaction led to the formation of a binuclear Cu(II) complex containing two end-to-end (di-m-1,3-N3) azide bridges, as well as two NNO-donor hydrazone ligands, forming an axially elongated square pyramidal geometry around each Cu(II) center. This end-to-end (di-m-1,3- N3) azide bridge binding mode has not yet occurred in Cu(II) complexes c

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31

Zhang, Kui, Zhimin Chen, Jingsong Wei, et al. "A study on one-step laser nanopatterning onto copper–hydrazone-complex thin films and its mechanism." Physical Chemistry Chemical Physics 19, no. 20 (2017): 13272–80. http://dx.doi.org/10.1039/c7cp00477j.

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Cardona, Maria A., and Leonard J. Prins. "ATP-fuelled self-assembly to regulate chemical reactivity in the time domain." Chemical Science 11, no. 6 (2020): 1518–22. http://dx.doi.org/10.1039/c9sc05188k.

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Qin, Qi-Pin, Yan-Cheng Liu, Hai-Lu Wang, et al. "Synthesis and antitumor mechanisms of a copper(ii) complex of anthracene-9-imidazoline hydrazone (9-AIH)." Metallomics 7, no. 7 (2015): 1124–36. http://dx.doi.org/10.1039/c5mt00027k.

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Velayudhankutty, Sheeja, Shamla Moideen, Swapna A. Surendran, Akhil M. Babu, and Nihila Kasim. "METHOD DEVELOPMENT AND VALIDATION FOR THE ANALYSIS OF DOLUTEGRAVIR IN PURE AND DOSAGE FORMS USING ULTRAVIOLET-VISIBLE SPECTROSCOPY." Indian Drugs 60, no. 03 (2023): 47–52. http://dx.doi.org/10.53879/id.60.03.13026.

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A colorimetric method for the analysis of dolutegravir in pure form and in tablets has been developed based on the formation of green colour complex. The method is based on the diazotization of carbonyl group and coupling with 3-methyl-2-benzothiazolinone hydrazone reagent in presence of ferric chloride to form green colour complex, by reaction of NH2 (amine) group present in the 3-methyl-2-benzothiazolinone hydrazone reagent with the carbonyl functional group of dolutegravir by eliminating one water molecule. The complex exhibited absorption maxima at 632 nm obeying Beer’s law in range of 10-

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35

Mikubayeva, E. V., N. S. Kobotayeva, and E. E. Sirotkina. "Combined Sensitisation of Benzaldehyde Diphenylhydrazones: Effect of Hydrazone Structure on Sensitization Efficiency." Eurasian Chemico-Technological Journal 6, no. 2 (2017): 133. http://dx.doi.org/10.18321/ectj602.

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Injection, spectral and combined (injection-spectral) sensitisations of several benzaldehyde diphenylhydrazones have been studied using the layers of amorphous selenium and complex compounds based on<br />pyril dyes to broaden photosensitivity spectrum of electrophotographic carrier and to study sensitisation mechanism. Two photogeneration mechanisms for charge carriers have been shown to exist at a combined<br />sensitisation, i.e. generation in the injection layer followed by the injection into a transport layer and generation in a transport layer on a dye. The excited dye molecu

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Delledonne, D., G. Pelizzi, and C. Pelizzi. "Structure of a seven-coordinated tin(IV)–hydrazone complex." Acta Crystallographica Section C Crystal Structure Communications 43, no. 8 (1987): 1502–5. http://dx.doi.org/10.1107/s0108270187091303.

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Feng, Qi, Yuanyuan Li, Guang Shi, et al. "A photo-controllable third-order nonlinear optical (NLO) switch based on a rhodamine B salicylaldehyde hydrazone metal complex." Journal of Materials Chemistry C 4, no. 36 (2016): 8552–58. http://dx.doi.org/10.1039/c6tc01549b.

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Gayathri, S., P. Viswanathamurthi, K. Naveen, and K. Murugan. "Convenient synthesis of symmetrical azines from alcohols and hydrazine catalyzed by ruthenium(II) hydrazone complex in air." Inorganica Chimica Acta 537 (July 2022): 120957. http://dx.doi.org/10.1016/j.ica.2022.120957.

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Tortora, Carola, Christian Andreas Fischer, Sascha Kohlbauer, et al. "Development and mechanistic studies of calcium–BINOL phosphate-catalyzed hydrocyanation of hydrazones." Beilstein Journal of Organic Chemistry 21 (April 14, 2025): 755–65. https://doi.org/10.3762/bjoc.21.59.

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Asymmetric hydrocyanation of hydrazones, catalyzed by a calcium–BINOL phosphate complex, has been studied for the first time both experimentally and computationally with DFT methods. A full catalytic cycle for the enantioselective synthesis of α-hydrazinonitriles is proposed based on insights gained from DFT calculations. Trimethylsilyl cyanide (TMSCN) has been used as a sacrificial cyanide source. We found that isocyanide (rather than cyanide) is a preferred coordination to calcium during the catalytic cycle, while the active catalyst prefers a side-on coordination of cyanide. The configurati

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Bipul, Mondal, Banerjee Rahul, and Ghosh Tapas. "Synthesis and structural characterization of a solvated dimorph of a hydrazonatooxovanadium( v) complex with [OV(µ-O)VO] core." Journal of Indian Chemical Society Vol. 88, Jul 2011 (2011): 937–41. https://doi.org/10.5281/zenodo.5784939.

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Post Graduate Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata-700 118, India <em>E-mail</em> : ictg_ 64@yahoo. co. in Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhaba Road, Pune-411 008, Maharashtra, India <em>Manuscript received 28 May 2010, revised 15 November 2010, accepted 13 December 2010</em> In this paper we report the synthesis and structural characterization of a different monoclinic variety of the title complex [V <sub>2</sub>0<sub> 3</sub>(L)<sub>2</sub>], incorporating the doubly deprotonated benzoyl hyd

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Bergamini, F. R. G., M. A. Ribeiro, P. C. M. L. Miranda, A. L. B. Formiga, and P. P. Corbi. "A novel binuclear copper complex incorporating a nalidixic acid derivative displaying a one-dimensional coordination polymeric structure." Acta Crystallographica Section C Structural Chemistry 72, no. 7 (2016): 544–48. http://dx.doi.org/10.1107/s2053229616008913.

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The identification of the antibacterial action of nalidixic acid (nx) was central to the development of the quinolone antibacterial compounds. The ability of the nx naphthyridyl ring to interact with and inhibit some proteins has encouraged the investigation of similar structures in the search for more active compounds with less adverse effects. The possibility of structural modification by attachment of other biologically active moieties to the naphthyridyl ring of nx allowed the development of new active antimicrobial molecules. Hydrazone derivatives of nx can be synthesized easily based on

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Wang, Shou-Xing. "[N′-(3-Ethoxy-2-oxidobenzylidene)-4-hydroxy-3-methoxybenzohydrazidato](methanol)dioxidomolybdenum(VI)." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): m358—m359. http://dx.doi.org/10.1107/s1600536812008549.

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In the title dioxidomolybdenum(VI) complex, [Mo(C17H16N2O5)O2(CH3OH)], the MoVIatom is coordinated by the phenolate O, imine N and enolic O atoms of the tridentate hydrazone ligand, one methanol O atom, and two oxide O atoms, forming a distorted octahedral coordination geometry. The oxide O atoms adopt acisconformation: one istransto the methanol O atom and the other istransto the ligand N atom. The dihedral angle between the two benzene rings in the hydrazone ligand is 4.0 (3)°. In the crystal, molecules are linked by O—H...N and O—H...O hydrogen bonds.

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Zhang, Qing, Zi-Quan Wang, Dian-Xiang Xing, Shou-Juan Wang, and Xue-Jie Tan. "Synthesis, crystal structures and antiproliferative activities of a new indole-containing dipyridylmethanone hydrazone Schiff base and its cadmium(II) complex." Acta Crystallographica Section C Structural Chemistry 80, no. 11 (2024): 748–60. http://dx.doi.org/10.1107/s2053229624010167.

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In this study, we introduce a novel indole-containing pyridine-based Schiff base, (E)-2-({[bis(pyridin-2-yl)methylidene]hydrazin-1-ylidene}methyl)-1H-indole, C20H15N5 (2-DPHI), and its cadmium(II) complex poly[[2-({[bis(pyridin-2-yl)methylidene]hydrazin-1-ylidene}methyl)-1H-indole]di-μ-chlorido-cadmium(II)], [CdCl2(C20H15N5)] n (pCd2), as potential anticancer agents. The Schiff base was synthesized by reacting dipyridylmethanone hydrazone with indole-2-formaldehyde, while the cadmium complex was prepared by combining CdCl2 and 2-DPHI in methanol at room temperature. Both compounds were evaluat

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Yuan, Juan, Mei-Jiao Liu, Shu-Qi Wu, et al. "Substituent effects on the fluorescent spin-crossover Fe(ii) complexes of rhodamine 6G hydrazones." Inorganic Chemistry Frontiers 6, no. 5 (2019): 1170–76. http://dx.doi.org/10.1039/c9qi00111e.

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The magnetic properties of Fe(ii) pyridine-2-carbaldehyde rhodamine 6G hydrazone complexes are modulated by the substituents. The desolvated complex displays the correlation between the spin crossover and the fluorescence.

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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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Mori, Asami, Takayoshi Suzuki, Yuichi Nakatani, Yukinari Sunatsuki, Masaaki Kojima, and Kiyohiko Nakajima. "Palladium(ii) mononuclear and palladium(ii)/ruthenium(ii) heterodinuclear complexes containing 2-quinolyl-substituted (pyridine-2-carbonyl)hydrazone." Dalton Transactions 44, no. 36 (2015): 15757–60. http://dx.doi.org/10.1039/c5dt02345a.

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Two mononuclear Pd<sup>II</sup> complexes and a heterodinuclear Pd<sup>II</sup>/Ru<sup>II</sup> complex bearing the hydrazone-derived ligand were prepared and their structures and properties were characterized.

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Nunes, Edinaira Deodato, Anne Drumond Villela, Luiz Augusto Basso, et al. "Light-induced disruption of an acyl hydrazone link as a novel strategy for drug release and activation: isoniazid as a proof-of-concept case." Inorganic Chemistry Frontiers 7, no. 4 (2020): 859–70. http://dx.doi.org/10.1039/c9qi01172b.

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Photocleavage of an acyl hydrazone bridge was achieved by conjugating isoniazid to a ruthenium(ii) metal complex through the generation of singlet oxygen, which released and activated the anti-tuberculosis pro-drug isoniazid.

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Azizah, Yulyani Nur, Irma Mulyani, Deana Wahyuningrum, and Damar Nurwahyu Bima. "Synthesis, Characterization and Antioxidant Activity of Kobalt (II)-Hydrazone Complex." EduChemia (Jurnal Kimia dan Pendidikan) 5, no. 2 (2020): 119. http://dx.doi.org/10.30870/educhemia.v5i2.7987.

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Shrestha, Sabita, and Sudha Maharjan. "Synthesis and Characterization of Copper Complex of Salicylaldehyde Benzoyl Hydrazone." Journal of Nepal Chemical Society 29 (December 3, 2013): 11–17. http://dx.doi.org/10.3126/jncs.v29i0.9231.

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Copper complex of type [Cu(SBH)2] was synthesized and characterized by different analytical procedure and spectral studies. The complex was insoluble in common organic solvents and it has melting point in between 254-258°C. Infrared spectrum showed the bonding through enolic oxygen and azomethine nitrogen. The electronic spectral studies showed that the Cu(II) is in tetrahedral coordination environment. DOI: http://dx.doi.org/10.3126/jncs.v29i0.9231Journal of Nepal Chemical SocietyVol. 29, 2012Page: 11-17Uploaded date : 12/3/2013

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50

Patel, R. N., S. K. Patel, A. K. Patel, N. Patel, and Ray J. Butcher. "A tetranuclear nickel(II) complex, [Ni₄(L)₄](ClO₄)₄·C₂H₃N·2H₂O, with an asymmetric Ni₄O₄ open-cubane-like core." Acta Crystallographica Section E Crystallographic Communications 78, no. 2 (2022): 98–102. http://dx.doi.org/10.1107/s2056989021012408.

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A tetranuclear complex with an open-cubane-like core structure was synthesized from 2-methoxy-6-(pyridin-2-yl-hydrazonomethyl)phenol (HL), namely, cyclo-tetrakis(μ-2-methoxy-6-{[2-(pyridin-2-yl)hydrazin-1-ylidene]methyl}phenolato)tetranickel(II) tetrakis(perchlorate) acetonitrile monosolvate dihydrate, [Ni4(C13H12N3O2)4](ClO4)4·C2H3N·2H2O, and characterized using micro-analytical and spectroscopic techniques. The crystal-structure determination reveals the formation of a distorted Ni4O4 cubane-like core architecture encapsulated by four hydrazone Schiff base (HL) molecules. A open-cube tetranu

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