CYANOACETATES OF MANGANESE(II), COBALT(II) AND ZINC(II) AND THEIR PYRIDINE AND 2,2'-BIPYRIDYL COMPLEXES

Anhydrous manganese(II), cobalt(II) and zinc (II) cyanoacetates have been prepared and characterized using spectroscopic, magnetic and X-ray powder photographic methods. The metal atoms in these octahedral polymeric compounds are surrounded by briding and/or chelating carboxylate groups, together with N-bonded cyano-groups. These cyanocetates react with pyridine and 2,2′-bipyrldyl to afford the octahedral complexes M(O2 CCH2CN)2(py)2. (M = Mn, Co or Zn), and Zn(O2CCH2CN)2(bipy) which contain bidentate carboxylate groups, and M(O2CCH2CN)2(bipy)2, (M = Mn or Co), which contain unidentare carboxylate groups. Unlike the parent cyanoacetates, no metalcyano-nitrogen interactions occur in these complexes. © 1979.