The thermal decomposition of some pyridine N-oxide and substituted pyridine N-oxide complexes of manganese(II), cobalt(II), nickel(II), and zinc(II) halides

Abstract

Pyridine N-oxide and substituted pyridine N-oxides form complexes with varied stoicheiometries with dipositive transition-metal halides. On controlled thermal decomposition, some manganese(II), cobalt(II), and nickel(II) complexes lose ligand to give stable phases with lower ligand content. Of these, monoligand complexes are most commonly isolated. Zinc(II) halide complexes give only a limited number of monoligand complexes on heating. The corresponding copper(II) halide monoligand complexes can be isolated directly from solution.