Arshad Aijaz, E. Sañudo, P. Bharadwaj
Feb 23, 2011
Citations
2
Influential Citations
54
Citations
Journal
Crystal Growth & Design
Abstract
A new ligand, 3,5-di(1H-imidazol-1-yl)benzonitrile (DICN), has been synthesized by reacting 3,5-difluorobenzonitrile with imidazole in good yields. The cyanide group hydrolyzes to carboxylic acid under solvothermal conditions in the presence of different metal salts giving rise to carboxylate and imidazole bonded coordination polymers. Seven such polymers, {[Cd(DIBA)I]·H2O}n (1), {[Zn(DIBA)(MeCOO)]·H2O}n (2·H2O), {[Zn(DIBA)(NO3)]}n (3), {[Cu(DIBA)]·H2O}n (4), {[Ni(DIBA)2(H2O)2]·3H2O}n (5), {[Co(DIBA)(OH)]·H2O}n (6), and {[Pb2(DIBA)(OH)(NO3)]}n (7) (DIBA¯ = 3,5-di(1H-imidazol-1-yl)benzoate)), have been isolated. These polymers have been structurally characterized by single crystal X-ray diffraction, thermogravimetric (TGA), and elemental analysis. Both 1 and 2·H2O form honeycomb two-dimensional (2D) layer structures that stack on top of one another to form three-dimensional (3D) networks. 3 and 6 have the same (2,4,6) connected net, while 4 is a rare 3-connected net with a 3D network. Compounds 5 and 7 hav...