Abstract
The synthesis and characterization of three additional members of a unique family of soluble, rigid rod-like polymers containing first transition series metals and 5-phenyltetrazolate (T −) or substituted 5-phenyltetrazolates (RT −) are reported. Viscometric, spectrophotometric, titrimetric, electrophoretic and heat sensitivity data indicate that the formulas of the new species are [Ni( p-NO 2T) 3−] n , [Ni( p-CH 3T) 3 −] n and [Co( p-CH 3T) 2(H 2O)(OH) −] n . The fact that Cu 2+ does not form such polymers is also reported. Elec- trophoretic measurements show that the Co 2+/T − polymer is anionic rather than neutral as previously proposed. A systematic viscosity study of all the polymers indicates that their intrinsic viscosities are comparable. The results suggest that triple bridging between metal ions is characteristic of these complexes.
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