ONE-DIMENSIONAL POLYMERIC BICINATE MANGANESE COMPLEX

The synthesis, X-ray structure and magnetochemical properties of the o ne-dimensional polymeric bicinate (bic(-)) manganese complex {[Mn(bic) Cl](2) . 2(H2O)}(n). Each mangenese ion has distorted octahedral coord ination geometry. Bicine is a pentadentate ligand using one nitrogen, and four oxygen atoms to coordinate to the Mn-II ion. The two hydroxyl groups are not deprotonated and the carboxylate moiety of the bic(-) ligand ion is a bridge leading to a one-dimensional chain. The water m olecules are not coordinated to the Mn-II ions, but are involved in hy drogen-bonding interactions with the chain. Only weak pairwise antifer romagnetic exchange interactions (J = -0.30 cm(-1)) are found within t he chain complex due to the carboxylate bridges. (C) 1997 Elsevier Sci ence Ltd.