Monoclinic form of (cyanato-κN){2,2′-[ethane-1,2-diylbis(nitrilo­methyl­idyne)]diphenolato-κ(4) O,N,N′,O′}manganese(III)

The title compound, [Mn(C(16)H(14)N(2)O(2))(NCO)], is a monoclinic polymorph of the previously published ortho­rhom­bic form [Lu et al. (2006 ▶). Inorg. Chem. 45, 3538–3548]. The Mn(III) ion is chelated by a tetra­dentate Schiff base ligand and coordinated by the N atom of a cyanate ligand in a distorted square-pyramidal arrangement. In the crystal, there are short inter­molecular Mn⋯O(phenolate) distances of 2.752 (3) Å between pairs of inversion-related mol­ecules.