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Acta Cryst. (2013). E69, m608
[ doi:10.1107/S1600536813028213 ]

catena-Poly[2-methyl­pyridinium [tungstate-di-[mu]-selenido-silver-di-[mu]-selenido] 2-methyl­pyridine monosolvate]

L.-J. Zhou, H.-T. Shi, C. Xu, Q. Chen and Q.-F. Zhang

Abstract: The title compound, {(C6H8N)[AgWSe4]·C6H7N}n, consists of anionic [WAgSe4]n chains, 2-methyl­pyridinium cations and neutral 2-methyl­pyridine mol­ecules. The Se atoms bridge the Ag and W atoms, forming a polymeric chain extending along the b-axis direction. Both the Ag and W atoms are located on a twofold rotation axis and each metal atom is coordinated by four Se atoms in distorted tetra­hedral geometry. In the crystal, the 2-methyl­pyridinium cation and 2-methyl­pyridine mol­ecule are linked via N-H...N hydrogen bonding. Weak C-H...Se inter­actions link the organic components and polymeric anions into a three-dimensional architecture.


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