Synthesis, and copper(I) and gold(I) complexes of imidazole-based bisphosphine, [2,6-(PPh 2 C 3 H 2 N 2) 2 C 5 H 3 N] are described. Reactions of [2,6-(PPh 2 C 3 H 2 N 2) 2 C 5 H 3 N] with one equivalent of CuX (X = Cl, Br or I) yielded either monomeric [{2,6-{PPh 2 C 3 H 2 N 2 } 2 C 5 H 3 N}{CuI}], dimeric [{PPh 2 C 3 H 2 N 2 } 2 C 5 H 3 N}-{CuCl}] 2 , or one-dimensional (1D) polymeric [{2,6-(PPh 2-C 3 H 2 N 2) 2 C 5 H 3 N}{Cu 3 Br 2 }] n Cl complexes. Coordination polymer [{2,6-(PPh 2 C 3 H 2 N 2) 2 C 5 H 3 N}{Cu 3 Br 2 }] n Cl is a rare example containing alternately arranged copper atoms having tetrahedral and linear geometries. The repeating unit consists of imidazolyl [a