摘要

The asymmetric redox-active ligand 4,5-bis(pyridine-2-carboxamido)-1,2-catechol ((LH4)-L-N,O) is prepared and metalated to afford the hexanuclear complex [Mn-6(L-N,L-O)(6)](6-). Structural analysis and magnetic measurements reveal this complex to feature Mn-II ions bridged by L-N,O(3-center dot) radicals, which are antiferromagnetically coupled to give an S = 12 ground state.