Polymer Complexes. XX. Stability Studies in Relation to IR Data and Structural Chemistry of Polychelate from Poly (5-Vinylsalicylidene Semicarbazone) with Some Transition Metal Acetates

摘要

Polymeric metal complexes of poly (5-vinylsalicyl idene semicarbazone) (PVSSc) of general formula UO2.(VSSc-H2n and M(VSSC-H)2(H2O)2n are described. The polymer complexes which are intensely coloured and insoluble in common organic solvents were characterized by elemental analyses, IR, electronic spectroscopic and magnetic moment measurements. IR spectra reveal that the PVSSc homopoly mer acts as a singly negatively charged bidentate anion, and two homopolymers coordinate with each metal ion through the hydroxyl group oxygen atom and azomethine group nitrogen atom to from neutral poly chelates. The shift in the hand positions of the groups involved in coordination has been utilised to estimate the metal- nitrogen bond lengths. The results obtained are in good agreement with the values of me tal-nitrogen modes and homopolymer field splitting energy (lUDq). All these polymer complexes show a six-coo rdinated structure and octahedral stereochemistry.