Acta Cryst. (2008). E64, m1276-m1277  [ doi:10.1107/S1600536808029139 ]

A tetranuclear chlorido-bridged manganese(II) cluster with imidazole ligands

M. A. Kurawa, C. J. Adams and A. G. Orpen

Abstract: The crystal structure of di-₃-chlorido-tetra-₂-chlorido-dichloridoocta(imidazole-N)tetramanganese(II) ethanol 1.234 solvate, [Mn₄Cl₈(C₃H₄N₂)₈]·1.234C₂H₅O or [Mn₄Cl₈(Him)₈]·1.234EtOH, where Him is imidazole (C₃H₄N₂), is based upon two Mn₄Cl₄ cubes which share one face, and which each lack one manganese vertex, giving a Mn₄Cl₆ unit. This contains two different octahedral coordination environments for the Mn atoms. Mn1 is coordinated by four bridging chlorido ligands and two imidazole N atoms, whereas Mn2 is coordinated by three bridging and one terminal Cl and two imidazole N atoms. The remaining two Mn centres are generated by inversion symmetry. A partial occupancy solvent molecule (ethanol) is present. The crystal structure displays several N-HCl and N-HO hydrogen bonds.

Online 20 September 2008

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