Bivalent metal complexes ofp-methyl- andp-methoxybenzoylhydrazone oximes

Summary Bivalent metal complexes ofp-chloro-,p-methyl- andp-methoxybenzoylhydrazone oximes (H₂BMCB, H₂BMMB or H₂BMTB=H₂L), [M(H₂L)Cl₂]. nH₂O (M=Zn^II, Cd^II or Hg^II, n=0 or 1; [M(H₂L)Cl₂] (M=Zn^II or Cd^II); [M(HL)₂(H₂O)_n]. YH₂O (M=Co^II, Cu^II, Zn^II or U^VIO₂, n=0–2); [Ni(H₂BMCB)(H₂O)₃]Cl₂, [Ni(BMMB)(H₂O)]₂ and [Ni(BMTB)(H₂O)]₂, were synthesized by conventional physical and chemical measurements. I.r. spectra show that the ligands are bidentate or tridentate. Spectral, magnetic and molecular weight measurements suggest that cobalt(II) and nickel(II) have monomeric octahedral geometry when derived from H₂BMCB, a dimeric square planar geometry for nickel(II) and monomeric square planar geometry for cobalt(II) for those isolated from H₂BMMB or H₂BMTB. Also, a monomeric distorted octahedral structure is proposed for copper(II) complexes derived from the ligands under investigation.