AbstractA new coordination polymer [Ni(3-bpo)(m-bdc)(C2H5OH)2]n(1, 3-bpo = 2,5-bis(3- pyridyl)-1,3,4-oxadiazole, m-H2bdc = 1,3-benzenedicarboxylic acid) was solvothermally synthesi- zed and characterized by IR, TGA and single-crystal X-ray diffraction. The title complex crystalli- zes in the orthorhombic system, space group Pnma with a = 7.786(3), b = 17.253(6), c = 18.478(6) Å, V = 2481.9(14) Å3, Mr= 539.18, Dc= 1.443 g/cm3, Z = 4, R= 0.0353 and wR = 0.0589. The m-bdcand 3-bpo bridge two Ni(II) ions through two carboxylate groups and two pyridyl groups forming a 1D infinite double-sinusoidal chain along the c axis. The photoluminescence of 1 shows a large red shift compared to that of free ligands in the solid state.
Received: 16 April 2010
LOU Jia-Ying LI Peng WENG Lin-Hong