Acta Cryst. (2002). E58, m130-m132  [ doi:10.1107/S1600536802003252 ]

Bis(pyrazine-2-carboxamide)bis(trifluoromethanesulfonato)copper(II) monohydrate

O. Kristiansson

Abstract: The copper(II) ion in [Cu(C₅H₅N₃O)₂(CF₃SO₃)₂]·H₂O lies on a center of symmetry and is coordinated by two pyrazinecarboxamide ligands in a square-planar geometry with Cu-O and Cu-N distances of 1.9445  (14) and 1.9680  (17)  Å, respectively. The Cu(C₅H₅N₃O)₂ unit is approximately planar, with an average atomic deviation of 0.057  (4)  Å from the least-squares plane. Each copper center is further coordinated, in the axial direction, by two symmetry-equivalent O atoms from trifluoromethanesulfonate anions with a Cu-O distance of 2.4871  (17)  Å, giving the copper(II) ion a Jahn-Teller distorted-octahedral geometry.

Online 28 February 2002

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