Acta Cryst. (2001). E57, m475-m477    [ doi:10.1107/S1600536801015276 ]

The unexpected fixation of CO₂ employing a Cu^IBr(bpy)₂ complex

G. Kickelbick

Abstract: The attempt to crystallize Cu^IBr(bpy)₂, where bpy is bipyridine, from an acetonitrile solution in a glove-box led unexpectedly to a dimeric carbonato-bridged Cu^II precipitate, viz. -carbonato-bis[bis(bipyridine)copper(II)] dibromide diacetonitrile monohydrate, [Cu₂(C₁₀H₈N₂)₄(CO₃)]Br₂·2CH₃CN·H₂O. The ₂-carbonato ligand is probably the result of an oxidation of traces of CO₂ by Cu^I. The resulting structure contains two square-pyramidally coordinated Cu^II atoms bridged by a CO₃^2- unit.

Online 29 September 2001

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