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Acta Cryst. (2013). E69, m351-m352  [ doi:10.1107/S1600536813014578 ]

Bis[[mu]-2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole-[kappa]4N2,N3:N4,N5]bis[(nitrato-[kappa]O)silver(I)] tetrahydrate

A. Laachir, F. Bentiss, S. Guesmi, M. Saadi and L. El Ammari

Abstract: The self-assembly of an angular 2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole ligand (L) with silver nitrate (AgNO3) produced a new dinuclear silver(I) coordination complex, [Ag2(C12H8N4S)2(NO3)2]·4H2O, which crystallizes with two Ag atoms bridged by two L ligands. The Ag atom is surrounded by four N atoms of L and by one O from the nitrate anion defining a distorted square pyramid. The atoms comprising the dication are nearly coplanar, with an r.m.s. deviation of 0.1997 Å. Molecules are linked by C-H...O and O-H...O hydrogen bonds through nitrate anions and water molecules, forming a two-dimensional porous network. The overall structure involves stacking of Ag complex layers along the b axis. The cohesion in the three-dimensional architecture is ensured by O...Ag interactions.

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