Journal ArticleDOI
Synthesis and spectral studies of nickel(II) complexes derived from disalicylaldehyde oxaloyldihydrazone
Reads0
Chats0
TLDR
In this article, the metal-metal interaction between the two nickel(II) ions is explained via phenoxide bridge via coordination of bipyridine and phenanthroline molecules which do not allow phenoxide bridging.Abstract:
The mononuclear nickel(II) complex [Ni(H2slox)(H2O)3] (1) and polymeric dinuclear complexes [Ni2(slox)(A4)] {A = H2O (2), py (3), 2-pic (4), 3-pic (5) and 4-pic (6)} and the discrete binuclear complexes [Ni2(slox)(NN)3] {NN = bpy (7) and phen (8)} have been synthesized from disalicylaldehyde oxaloyldihydrazone (H4slox) in methanol. All of the complexes are nonelectrolytes. Complexes 1, 7, and 8 are paramagnetic while binuclear 2–6 possess anomalously low μ eff value, indicating considerable metal–metal interaction. Discrete binuclear 7 and 8 have no interaction between the two nickel(II) ions. The anomalously low magnetic moment values in 2–6 are explained as metal–metal interaction via phenoxide bridge. Such metal–metal interactions are less in 7 and 8 due to coordination of bipyridine and phenanthroline molecules which do not allow phenoxide bridging. The dihydrazone coordinates to the metal center as a dibasic tridentate ligand in keto-enol form in staggered configuration in 1, while in the remaining c...read more
Citations
More filters
Journal ArticleDOI
Empirical Formulae to Molecular Structures of Metal Complexes by Molar Conductance
TL;DR: In this article, molar conductance data are exploited to ascertain electrolytic and non-electrolytic nature of metal complexes, which can provide brief insights into their nature and composition.
Journal ArticleDOI
Alkali Metal Directed Assembly of Heterometallic Vv/M (M = Na, K, Cs) Coordination Polymers: Structures, Topological Analysis, and Oxidation Catalytic Properties
Samik Gupta,Marina V. Kirillova,M. Fátima C. Guedes da Silva,M. Fátima C. Guedes da Silva,Armando J. L. Pombeiro,Alexander M. Kirillov +5 more
TL;DR: Compounds 1-3 show solubility in water and were applied as efficient precatalysts for the homogeneous oxidation of cyclohexane by aqueous H2O2, under mild conditions (50 °C) in MeCN/H2O medium and in the presence of an acid promoter.
Journal ArticleDOI
Synthesis, structures and Helicobacter pylori urease inhibitory activity of copper(II) complexes with tridentate aroylhydrazone ligands.
Lin Pan,Cun-Fang Wang,Kai Yan,Ke-Dong Zhao,Gui-Hua Sheng,Hai-Liang Zhu,Xinlu Zhao,Dan Qu,Fang Niu,Zhong-Lu You +9 more
TL;DR: Molecular docking study of the copper(II) complexes with the Helicobacter pylori urease indicated that copper complexes with square planar coordination are better models for ure enzyme inhibition.
Journal ArticleDOI
Synthesis, structures and urease inhibitory activity of cobalt(III) complexes with Schiff bases.
Changling Jing,Cun-Fang Wang,Kai Yan,Ke-Dong Zhao,Gui-Hua Sheng,Dan Qu,Fang Niu,Hai-Liang Zhu,Zhong-Lu You +8 more
TL;DR: A series of new cobalt(III) complexes were prepared, characterized by infrared and UV-Vis spectra, and single crystal X-ray diffraction, and molecular docking study of the complexes with Helicobacter pylori urease was performed.
Journal ArticleDOI
Synthesis, characterization, molecular docking and DNA binding studies of Cu(II), Ni(II), Zn(II) and Mn(II) complexes
TL;DR: In this paper, the azo dye ligand of Cyano-6-(p-tolyl)azo-7-hydroxy coumarine (HL) was synthesized by coupling of 3-Cyano-7hydroxymethyl coumarine with p-toluidine, and its complexes were characterized by elemental analyses, IR, 1H NMR, MS and UV-Visible spectra as well as magnetic and thermal measurements.
References
More filters
Book
Infrared and Raman Spectra of Inorganic and Coordination Compounds
TL;DR: In this article, the normal modes of vibration are illustrated and corresponding vibrational frequencies are listed for each type, including diatomic, triatomic, fouratomic, five-atomic, six-atomic and seven-atomic types.
Journal ArticleDOI
The use of conductivity measurements in organic solvents for the characterisation of coordination compounds
Book
Textbook of quantitative inorganic analysis
Izaak M. Kolthoff,E. B. Sandell +1 more
TL;DR: Textbook of quantitative inorganic analysis as discussed by the authors, Textbook of qualitative and quantitative analysis of inorganic properties, textbook of quantitatively analytically-inorganic analysis, as discussed by the authors.