A mixed valence manganese triangle in a trigonal lattice: structure and magnetism†
Abstract
The synthesis, structural and magnetic characterisation of trinuclear manganese cluster, [Mn3O(O2C-anth)6(HOCH3)3] 1 (where O2C-anth = 9-anthracenecarboxylate), with crystallographic three-fold (C3) symmetry, are described. The cluster was prepared by a carboxylate exchange reaction between HO2C-anth and [Mn12O12(O2CMe)16(H2O)4] with concomitant fragmentation of the dodecanuclear Mn core of the starting material to form a trinuclear Mn3(μ3-O) cluster capped by six carboxylate