Poly[[bis[μ2-N,N′-bis(2-pyridylmethyl)oxalamide-κ4N,O:N′,O′][μ2-N,N′-bis(2-pyridylmethyl)oxalamide-κ2N:N′]disilver(I)] bis(trifluoromethanesulfonate)]

• Main Authors: Hadi D. Arman, Tyler Miller, Pavel Poplaukhin, Edward R. T. Tiekink
• Format: Article
• Language: English
• Published: International Union of Crystallography 2010-09-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536810033611
• ISSN: 1600-5368

The asymmetric unit of the title salt, [Ag(C14H14N4O2)1.5](CF3SO3), comprises a Ag+ cation, three half-molecules of N,N′-bis(2-pyridylmethyl)oxalamide (each of which is disposed about a centre of inversion) and a trifluoromethanesulfonate anion. Distinct coordination modes are found for the bridging ligands, i.e., a μ2,κ2-bridging mode involving pyridine N atoms for one ligand, and a μ2,κ4-bridging mode, employing both pyridine N and amide O atoms for the remaining ligands. The Ag+ cations, which are in a distorted square-pyramidal coordination, and the ligands combine to form a two-dimensional array parallel to (101); these arrays are connected into a three-dimensional structure by trifluoromethanesulfonate anions via N—H...O, C—H...O, and C—F...O interactions.