Physico-chemical studies on some metal chelates of 5,5 dimethylcyclohexane-2-(2-hydroxyphenyl)hydrazono 1,3 dione (DCPHD)

Cu(II), Ni(II), Co(II), Fe(II) and Mn(II) chelates of 5,5 dimethylcyclohexane-2-(2-hydroxyphenyl) hydrazono 1,3 dione (DCPHD) have been prepared and characterised on the basis of analytical, magnetic moment, conductance and electronic and IR spectral data. Two type of complexes, 1:1 and 1:2 (M:L) are formed. Electronic spectral data suggest high spin octahedral geometry for all the chelates except that of Cu(II) which shows square planar geometry. The ligand shows unusual behaviour with Cu(II) which is explained by IR studies.