Abstract
The coordination polymerization from lead(II) nitrate on reaction with 4-nitrobenzoic acid and pyridine N-oxide at room temperature passes through stepwise ligand substitution reaction. An intermediate polymer [Pb(NB)(PyO) 2(NO 3)] n (where NB = 4-nitrobenzoate, PyO = Pyridine N-oxide) is formed to give the final polymer [Pb(NB) 2(PyO)] n . A hydrated mononuclear complex [Pb(NB) 2(PyO)(H 2O)] is also formed if rigorous anhydrous condition is not maintained. The reaction is extended to 4,4′-bipyridyl N-oxide (BPNO), which initially gives a coordination polymer [Pb 2(NO 3)(NB) 3(BPNO) 2] n which gets converted to another coordination polymer [Pb(NB) 2(BPNO) 2] n . All these complexes are structurally characterized.
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