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Synthesis and some properties of PVC-bound dimethylglyoxime complexes of Co(II), Ni(II), and Cu(II)

โœ Scribed by Mukul Biswas; Subrata Moitra

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
458 KB
Volume
38
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Poly(viny1 chloride) (PVC) has been reacted with dimethylglyoxime (DMG) in THF to form the PVC-DMG complex, which has been characterized by spectroscopic and elemental analyses. The latter indicate that there is one DMG moiety anchored on the PVC chain by displacing every 12th C1 atom in the chain. PVC-DMG has further been reacted with alcoholic solutions of Co(II), Ni(II), and Cu(I1) to form the intensely colored PVC-DMG-M(I1) complexes. The structures of these complexes have been analyzed by elemental and IR spectral analyses. The overall thermal stability of PVC-DMG-M(I1) increases in the order: PVC < PVC-DMG-Cu(I1) < PVC-DMG-Ni(I1) < PVC-DMG-Co(I1). The electrical conductivities are also significantly enhanced in the same order. The permittivities of these complexes are high relative to PVC a t low frequency falling gradually with increasing frequency and the dielectric loss-frequency behavior is very broad.

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