Syntheses and Structures of Zinc(II), Silver(I), Copper(II), and Cobalt(II) Complexes with Imidazole-Containing Ligand: 1-(1-Imidazolyl)-4-(imidazol-1-ylmethyl)benzene

Six novel complexes, [Zn(IIMB)4(H2O)2](NO3)2·5H2O 1, {[Ag2(IIMB)2][2,6-C10H6(COO)2]·6H2O}n 2,
{[Cu(IIMB)2]Br2·0.5H2O}n 3, {[Co(IIMB)2(SCN)2]}n 4, {[Cu(IIMB)2(SO4)]·8.5H2O}n 5, and {[Co(IIMB)2(H2O)(SO4)]4·29H2O}n 6, were obtained by reactions of 1-(1-imidazolyl)-4-(imidazol-1-ylmethyl)benzene (IIMB) with the corresponding metal salts. X-ray diffraction analyses reveal that 1 is monomeric, in which IIMB acts as monodentate
ligand, while the IIMB ligand in complexes 2−6 acts as bidentate ligand. Complex 2 has a single chain structure,
while complexes 3 and 4 are double stranded chains. Complexes 5 and 6 display similar 2-D polycatenated
architectures formed by the inclined interpenetration of 1-D double stranded chains. This kind of 1-D → 2-D inclined
interpenetration has rarely been reported until now. In addition, the photoluminescence properties of the synthesized
compounds were investigated in the solid state at room temperature.