Acta Cryst. (2002). E58, m141-m143  [ doi:10.1107/S160053680200226X ]

-Peroxo-bis[acetonitrilebis(ethylenediamine)cobalt(III)] tetratriflate

S. E. McMullen and K. S. Hagen

Abstract: The crystals of the title compound, {[Co(en)₂(MeCN)]₂(-O₂)}(CF₃SO₃)₄ or [Co₂(O₂)(C₂H₃N)₂(C₂H₈N₂)₄](CF₃O₃S)₄, are built of binuclear tetracations and trifluoromethanesulfonate anions. The cation occupies a special position on the inversion center; the separation between the Co atoms, which have a slightly distorted octahedral coordination, is 4.4966 (7) Å, with Co-N(MeCN), Co-O, and average Co-N(en) distances of 1.938 (2), 1.8736 (17), and 1.950 Å, respectively. Both acetonitriles are trans to the O-O bridge, the O-O distance being 1.496 (3) Å. The [Co(en)₂] moieties have and the inversion-related conformations.

Online 8 March 2002

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