title: Transformation from a low-dimensional framework to a high-dimensional architecture based on different metal ions: syntheses, structures, and photoluminescences.
abstract: Five novel metal pamidronates (3-ammonium-1-hydroxypropylidene-1,1-bisphosphonate, APD) formulated as Ni2(C3NH10P2O7)4.4H2O (1), M(C3NH9P2O7).H2O (M = Co (2), Mn (3), Zn (4)) and Cu3(C3NH8P2O7)2.2H2O (5) have been hydrothermally synthesized under similar conditions. Compound 1 is a molecular binuclear nickel cluster. Compounds 2 and 3 exhibit similar one-dimensional ladderlike structures. Compound 4 possesses a novel two-dimensional gridlike framework. Compound 5 shows an unusual three-dimensional architecture, in which two-dimensional layers with a parquet motif are pillared by {CuO4} planar squares. Different dinuclear secondary building units (SBUs) are observed in compounds 1-5, depending on the different coordination modes of APD. They also exhibit different photoluminescence properties.
authors.affiliation: Department of Chemistry, Beijing Institute of Technology, Beijing 100081, P R China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Gong
authors.forename: Wang
authors.initials: W
authors.lastname: Tang
authors.forename: Wenbin
authors.initials: W
authors.lastname: Hou
authors.forename: Zhongyong
authors.initials: Z
authors.lastname: Zha
authors.forename: Changwen
authors.initials: C
authors.lastname: Hu