Aqua{6,6′-dimethoxy-2,2′-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato}methanolmanganese(III)) perchlorate hemihydrate

Abstract

The asymmetric unit of the title compound, [Mn(C18H18N2O4)(CH3OH)(H2O)]ClO4·0.5H2O, contains two complex cations and two perchlorate anions, one of which is disordered over two positions in a 0.767 (8):0.233 (8) ratio. The MnIII atoms are in distorted octa­hedral environments. In addition to the equatorial tetra­dentate salicylaldimine ligand, each Mn is axially coordinated by both a methanol and a water mol­ecule. The complex is a dimer held together by multiple strong and weak hydrogen-bonding inter­actions between the coordinated water mol­ecule on one monomer with all the phenolic and meth­oxy O atoms on the other monomer. In addition, the two perchlorate anions are linked by hydrogen bonds to the two methanol mol­ecules coordinated to each Mn center. The Mn—O phenolic bond distances range from 1.868 (2) to 1.882 (2) Å while the Mn—N distances range from 1.978 (2) to 1.981 (2) Å. Mn—O distances for the axial water and methanol ligands are longer at 2.226 (2)/2.257 (2) and 2.313 (2)/2.324 (2) Å, reflecting the usual Jahn–Teller distortion as found in MnIII complexes.