(Dimethyl sulfoxide-κO)(2-formyl-phenolato-κO,O')[2-(2-oxidobenzyl-idene-amino)-phenolato-κO,N,O']manganese(III)

The O-C(6)H(4)-CH=N-C(6)H(4)-O dianion of the title compound, [Mn(C(13)H(9)NO(2))(C(7)H(5)O(2))(C(2)H(6)OS)], acts as an O,N,O'-chelate to bind to the Mn(III) atom, and the three atoms constitute three points [O-Mn-O = 174.43 (11)°] of an octa-hedron around the metal atom. The azomethine linkage is disordered over two positions in a 0.657 (13):0.343 (13) ratio. The deprotonated salicyldehyde anion acts as an O,O'-chelate; the sixth coordination site is represented by the O atom of the dimethyl sulfoxide mol-ecule. The crystal studied was a non-merohedral twin with a minor twin component of 14.2 (3)%.