Synthesis and spectroscopic characterization of heterobimetallic dioxouranium(VI), trioxomolybdenum(VI), zinc(II), copper(II), nickel(II), cobalt(II) and manganese(II) complexes derived from bis(2-hydroxy-l-naphtha!dehyde)malonoyIdihydrazone

摘要

Heterobimetallic complexes [M2Zn2(H2L)2(OAc)4(H2O)2] (M = UO2~(VI), Cu~(II) Co~(II)), [(MoO3)2Zn2(H2L)2(H26)2], [M'2Zn2(L)2(H2O)n]·xH2O (M'= Ni~(II), n = 4, × = 4 and Mn~(II), n = 6, x = 2) and homometallic complex [Zn4(L)2(H2O)4]·2H2O have been synthesized from reaction of monometallic zinc complex [Zn(H2L)(H2O)] of bis(2-hydroxy-l-naphthaldehyde)malonoyldihydrazone with appropriate metal salts in different experimental conditions in ethanol/ methanol media. The composition of the complexes has been established based on data obtained from elemental analyses, thermoanalytical analyses, mass spectrometric studies and molecular weight determination. The structural assessment of the complexes has been done on the basis of molecular weight, electrical conductance, magnetic moment data and variety of spectral studies.