Di-μ-oxido-bis[(1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)dimanganese(III,IV)] bis(tetraphenylborate) chloride acetonitrile disolvate

• Main Authors: Marilyn M. Olmstead, David W. Boyce, Lauren E. Bria
• Format: Article
• Language: English
• Published: International Union of Crystallography 2011-07-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536811019829
• ISSN: 1600-5368

The title compound, [Mn2O2(C10H24N4)2](C24H20B)2Cl·2CH3CN, is a mixed-valent MnIII/MnIV oxide-bridged manganese dimer with one chloride and two tetraphenylborate counter-anions. There are two non-coordinated molecules of acetonitrile in the formula unit. A center of inversion is present between the two metal atoms, and, consequently, there is no distinction between MnIII and MnIV metal centers. In the Mn2O2 core, the Mn—O distances are 1.817 (3) and 1.821 (3) Å. The cyclam ligand is in the cis configuration. The chloride counter-anion resides on a center of symmetry, whereas the tetraphenylborate counter-anion is in a general position. The cyclam ligand is hydrogen bonded to the acetonitrile as well as to the chloride anion. One of the phenyl rings of the anion and the acetonitrile solvent molecule are each disordered over two sets of sites.