Transition metal complexes derived from ethylacetoacetate- N-anilino hydrazone

The hydrazone of beta-diketone and their complexes are used as antituberculous agents [1], furthermore some hydrazones are used as analytical reagents[2, 3]. Co[II] and Cu[II] complexes with benzoyl and salicyloyl hydrazones derived from beta diketones have been prepared and characterized[4]. Mixed -ligand complexes based on beta-diketones of rare earth elements as well as diazo coupling[5] of Cr[III], Ni[II], Pd[II] and Cu[II] chelates of benzoylacetone and dibenzoyl methane[6-9] with phenylhydrazoniurn chloride were studied. Transition metal complexes of beta-diketone hydrazone ligands have been synthesized and characterized by elemental analyses, UV/Vis and IR spectroscopy, conductance determinations in DMF and magnetic susceptibility measurements [10]. beta-diketone phenylhydrazones of substituted 3-aryldiene-2, 4-pentanediones with phenylhydrazine have been synthesized and characterized by elemental analyses, IR, magnetic susceptibility and thermogravimetry[11]. In this paper the synthesis and characterization of transition metal complexes of ethylacetoacetate-N-anilinohydrazone derived from metal acetate in [1:1] [M:L] ratio were studied

Transition metal complexes of hydrazone derived from isonicotinic acid hydrazide

Hydrazones derived from isonicotinic acid hydrazide [INH] and a number of their transition metal complexes are well known for their antibacterial, antitumour and antitubercular activities[1]. Also, some hydrazones of INH have been used as analytical reagents[2], polymer-coatings, inks, pigments[3] and fluorescent materials[4]. Few studies have been made on those derived from alpha- and beta-diketones and their azo derivatives[5-7]. Copper complexes of benzeneazoacetylacetone isonicotionylhydrazone have been described[8]. In this paper, we describe the synthesis and characterization of transition metal complexes of orthohydroxybenzeneazoethylacetoacetate isonicontinoyl - hydrazone

Physicochemical studies on some isatin isonicotinoyl hydrazone complexes prepared at PH 10

The complexes of Co, Ni, Pd, Cu and Cd of isatin isonicotinoyl hydrazone [HL] were prepared at pH 10 and characterized by elemental analysis and different physical techniques. Magnetic and spectral data suggested octahedral structures for Cu and Ni complexes, but tetrahedral for the Co complex. The dissociation constant pK of the ligand has been determined spectrophotometrically. The DC electrical conductivity of the compressed powder samples was investigated as a function of temperature. The activation energy [delta Eg] was calculated for the ligand and complexes which showed that the ligand has lower delta Eg than the complexes. The magnitudes of delta Eg were correlated with the number of d-electrons of the transition metal ion