Acta Cryst. (2012). E68, m1329
[ doi:10.1107/S1600536812040846 ]

Bis[5-(pyridin-2-yl)pyrazine-2-carbonitrile-²N⁴,N⁵](trifluoroacetato-O)silver(I)

J. Li, X. C. Jia, J. Qi, Y. Y. Liu and Y. Ding

Abstract: In the asymmetric unit of the title compound, [Ag(C₁₀H₆N₄)₂(CF₃CO₂)], there two mononuclear but slightly different complex units. In each, two ²N:N-chelating 5-(pyridin-2-yl)pyrazine-2-carbonitrile ligands surround the Ag^I atom, giving an N₄O square-pyramidal coordination geometry with one trifluoroacetate O atom at the apex. The difference between the two lies in the Ag-N bond lengths: in one complex, three normal [range 2.272 (5)-2.552 (5) Å] and one long [2.706 (4) Å] and in the second, two normal [2.254 (5) and 2.290 (5) Å] and two long [2.647 (5) and 2.675 (5) Å] are present. Short intermolecular FF contacts [2.586 (4) Å] and weak - stacking interactions [minimum ring centroid separation 3.836 (5) Å] between pyridyl and pyrazinyl rings connect the complex units, forming columns which extend along the b-axis direction.

Copyright © International Union of Crystallography
IUCr Webmaster