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The alkyl chain-linked diimidazolium (or dibenzimidazolium) salts,
1,1'-diethyl-4,4'-tetramethylene-diimidazolium-diiodide (L^1H"2.I"2) and
1,1'-diethyl-3,3'-trimethylene-dibenzimidazolium-diiodide (L^2H"2.I"2), and
their silver(I) and copper(II) coordination polymers, [L^1AgI]"n (1) and
[L^2Cu"2I"4]"n (2), have been prepared and characterized. Complex 1 is a 1D
helical polymer generated by bidentated carbene ligands (L^1) and Ag(I)
atoms. The 1D polymer of 2 is formed by bidentated carbene ligands (L^2)
and coplanar quadrilateral Cu"2I"2 units. 3D supramolecular frameworks in
the crystal packings of 1 and 2 are formed via intermolecular weak
interactions, including C-H...@p contacts, @p-@p interactions and C-H...I
hydrogen bonds.
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