K. Krishnankutty et Vt. Rema, METAL-CHELATES OF PHENYLHYDRAZONE AND BIPHENYLDIHYDRAZONE DERIVATIVESOF 1,3-CYCLOHEXANEDIONE, Synthesis and reactivity in inorganic and metal-organic chemistry, 25(2), 1995, pp. 243-256
Biphenyl-4,4'-tetrazonium ion reacts with 1,3-cyclo-hexanedione to for
m -biphenyldihydrazono)bis(1,2,3-cyclohexanetrione). Its ir, nmr and m
ass spectral data are discussed in terms of the intramolecularly hydro
gen bonded dihydrazone structure. Copper(II), nickel(II) and zinc(II)
complexes having the composition (M(2)L(2)) have been synthesised and
characterised. Ir, H-1 nmr and mass spectral data clearly indicate the
bimetallic nature of the chelates in which the hydrogen bonded carbon
yls and the hydrazono nitrogens of the ligand are involved in bonding
with the metal ion. Synthesis of the metal chelates of 1,2,3-cyclohexa
ne-trione-2-phenylhydrazone and their characterisation on the basis of
ir, nmr and mass spectral data are also included.