Abstract
Three complexes, M-2(bpy)(2)(bpdc)(2)center dot xH(2)O [M = Cu, x = 0; M = Zn or Cd, x = 2], have been hydrothermally synthesized by 1,1 '-biphenyl-2,2 '-dicarboxylic acid (H(2)bpdc) with 2,2 '-bipyridine (bpy) to form binuclear molecules. In each, the two bpdc groups align the two opposing planar [M(bpy)](2+) cations. The molecules are connected by C-H center dot center dot center dot O hydrogen bonds, pi-pi stacking, and C-H center dot center dot center dot pi interactions to form three dimensional supramolecular networks. Furthermore, at room temperature, complex 3 exhibits strong photoluminescence. (C) 2007 Published by Elsevier Masson SAS.