Acta Cryst. (2008). E64, m427-m428  [ doi:10.1107/S1600536808001633 ]

Bis[-1,4-bis(4,5-dihydro-1H-imidazol-2-yl)benzene-²N³:N^3']silver(I) dinitrate dihydrate

H. Sun, C.-X. Ren, B. Shen, Z.-Q. Liu and Y.-Q. Ding

Abstract: The reaction of 1,4-bis(4,5-dihydro-1H-imidazol-2-yl)benzene (bib) with silver(I) nitrate in a 1:1 molar ratio generates the metallacyclic title complex, [Ag₂(C₁₂H₁₄N₄)₂](NO₃)₂·2H₂O, in which the bib ligand displays a cis configuration. Each bib ligand acts as a bidentate bridging ligand connecting a pair of Ag^I ions to form a [2 + 2] metallamacrocycle in which the AgAg distance is 6.77 (2) Å. Each Ag^I ion has weak contacts (2.91 Å) with the nitrate anion. The uncoordinated water molecules make hydrogen bonds with nitrate O atoms, forming chains. The H atoms attached to the uncoordinated nitrogen interact with these chains through N-HO hydrogen bonds, forming layers parallel to the (11) plane.

Online 30 January 2008

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