title: Hydrothermal syntheses, crystal structures, and properties of a novel class of 3,3',4,4'-benzophenone-tetracarboxylate (BPTC) polymers.
abstract: Three novel BPTC complexes, (H(2)BPTC)(4,4'-H(2)bpy)H(2)O (1), [Cd(2)Cu(HBPTC)(2)(mu(2)-4,4'-bpy)(2)(4,4'-bpy)(2)(H(2)O)(2)](n) (2), and [Co(3)(HBPTC)(2)(mu(2)-4,4'-bpy)(3)(H(2)O)(4)](n).2nH(2)O (3) (BPTC = 3,3',4,4'-benzophenone-tetracarboxylate and bpy = bipyridine), were hydrothermally synthesized. Complex 1, which is obtained as a coproduct during the syntheses of complexes 2 and 3, features a 2-D layered strong hydrogen bonding network with 2-fold interpenetration. Complex 2 has an unusual 2-D double-layered motif, which is linked together by Cu atoms in a face-to-face manner. It exhibits nanosized channels filled by 4,4'-bpy ligands. Three six-coordinated Co atoms in 3 are interlinked by HBPTC ligands to form a 2-D grid structure, which is further sustained by rigid 4,4'-bpy ligands into a 3-D open framework similar to CdSO(4) with the BPTC moieties situated in the tunnels. The thermal stabilities of complexes 1-3 were examined. The photoluminescence properties of complexes 1-2 and temperature-dependent magnetic susceptibility for 3 were also studied.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Zhao-Ji
authors.initials: ZJ
authors.lastname: Li
authors.forename: Yao
authors.initials: Y
authors.lastname: Kang
authors.forename: Jian-Kai
authors.initials: JK
authors.lastname: Cheng
authors.forename: Yuan-Gen
authors.initials: YG
authors.lastname: Yao