Nanosized Silver(I) Coordination Networks of Mixed Bix-Diphosphine (Bix = 1,4-Bis(imidazol-1-ylmethyl)benzene)

Abstract

Assembly of silver(I) salts and bix in the presence of diphosphines provided four polymeric complexes [Ag(bix)(dppe)]n·nBF4 (1), [Ag(bix)(dppp)]n·nPF6 (2), [Ag(bix)(dppe)]n·nPF6·nCH3OH (3), and [Ag(bix)(dppe)]n·nSbF6·nCH3OH (4). X-ray diffraction analyses reveal that both 1 and 2 have a two-dimensional network composed of nanosized metallocyles, and the [Ag(bix)]n chains in 2 show alternate left and right helices. Complexes 3 and 4 are isomorphous, and they have 3D open frameworks of diamondoid topology with the size of 13 × 13 Å2 along the b-axis. Possible formation processes were interpreted by ESI-MS results.