SYNTHESIS AND CRYSTAL STRUCTURE OF A NOVEL OXO-CENTRED TRINUCLEAR MANGANESE COMPLEX [MN3O(C6H5COO)(6)(PY)(3)]CENTER-DOT-2CH(3)CN

摘要

The title complex, [Mn3O(C6H5COO)(6)(py)(3)]. 2CH(3)CN (py = pyridine), has been prepared. Single-crystal X-ray analysis revealed a mu(3)-oxo-bridged (Mn2MnII)-Mn-III structure, in which each manganese atom has a distorted octahedral environment. The Mn(1) atom is readily assigned as a Mn-III centre from the Mn-(mu(3)-O) distance [1.819(5) Angstrom]. The remaining Mn(2) and Mn(3) atoms are essentially equivalent in crystallography, indicating an electronic delocalization between Mn-II and Mn-III atoms. (C) 1997 Elsevier Science Ltd. [References: 7]