Synthesis, Magnetic, Thermal, and Spectral Studies of Some Chelates of Cu(II), Ni(II), Zn(II), Co(II), Mn(II), Sm(III), and Th(IV) Involving Aroylhydrazones Derived from Isonicotinic Acid Hydrazide and 2‐Furyl Methyl and 2‐Thienyl Methyl Ketone
摘要:
Two aroylhydrazones, viz., isonicotinic acid [1-(furan-2-yl)ethylidene]hydrazide (IFEH) and isonicotinic acid [1-(thiophene-2-yl)ethylidene]hydrazide (ITEH) have been synthesized by the interaction of 2-furyl methyl ketone and 2-thienyl methyl ketone with isonicotinic acid hydrazide in ethanol. Metal chelates of these hydrazones of the compositions [Cu(IFE)(2)(H2O)(2)].H2O (1), [Ni(IFE)(2)].H2O (2), [Co(IFE)(2)(H2O)(2)] (3), [Mn(IFE)(2)(H2O)(2)].H2O (4), [Zn(IFE)(2)]-H2O (5), [Cu(ITE)(2)] (6), [Zn(ITE)(2)] (7), [Sm(ITE)(2)(OAc)(H2O) (8) and [Th(ITE)(2) (NO3)(2)] (9) (HOAc = CH3COOH) have been prepared. The coordination behaviour of these two hydrazones with different metal ions has been discussed on the basis of analytical data, electronic spectra, magnetic measurements, thermogravimetric analyses, and infrared and nuclear magnetic resonance spectral studies.
Pesticidal and antifertility activities of triorganogermanium(IV) complexes synthesized using a green chemical approach
作者:Nirmala Singh、Sheenam Watts、Suresh C. Joshi、Ran V. Singh
DOI:10.1002/aoc.2960
日期:2013.5
Microwave chemistry is a green chemical method that improves reaction conditions and product yields while reducing solvent amounts and reaction times. This paper deals with the synthesis, spectral and biological studies of germanium(IV) complexes with chelating hydrazones derivedfrom 1‐(pyridine‐2‐yl)ethanone (F1) and 1‐(furan‐2‐yl)ethanone (F2) with isonicotinohydrazide (INH). The complexes have been
A diazo-, metal-, and base-free multi-substituted hydrazone synthesis via a formal reductive N–H bondinsertionreactions of hydrazones to α-keto esters has been developed. The protocol features a broad substrate scope and good functional group tolerance, providing N–H bondinsertion products in moderate to excellent yields. Moreover, P(III)-mediated N–H functionalization of pharmaceutical containing
Sobhanadevi, G.; Indrasenan, P., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1989, vol. 28, # 10, p. 919 - 921
作者:Sobhanadevi, G.、Indrasenan, P.
DOI:——
日期:——
Synthesis, coordination behavior, and investigations of pharmacological effects of some transition metal complexes with isoniazid Schiff bases
作者:Krishna K. Sharma、Ritu Singh、Nighat Fahmi、R.V. Singh
DOI:10.1080/00958972.2010.504986
日期:2010.9.10
Two isoniazid Schiff bases, N-isonicotinamido-2-furanketimine (INH-F1) and N-isonicotinamido-5-methyl-2-furanketimine (INH-F2), possessing potential N and O coordination sites have been prepared by the reaction of isoniazid with 2-acetylfuran and 2-acetyl-5-methylfuran, respectively. Complexes of Pd(II) and Pt(II) have been prepared and characterized by elemental analyses, melting point determinations and electronic, infrared, 1H NMR, 13C NMR spectral studies, and X-ray powder diffraction studies. In all the complexes, the monobasic bidentate nature of the ligand is evident. Antibacterial and antifungal studies of these compounds against various pathogenic bacterial and fungal strains have been carried out. Both the ligands and their metal chelates were active against all the microbial strains investigated. However, the chelates were found to be more active than the ligands. The antimycobacterial activity of the ligands and their metal complexes has been evaluated against Mycobacterium smegmatis, which showed clear enhancement in this activity upon metal complexation with Schiff bases.
Varma, R. Harikumar; Prabhakaran, C. P., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1990, vol. 29, # 8, p. 815 - 817