Three new metal-organic frameworks （MOFs）, namely [Zn（tib）（PDC）] （1）, [Zn3（tib）2（CHDC）3]·8H20 （2） and [Zn3（tib）2（BTC）2]·4.95H20 （3） were synthesized by hydrothermal reactions of ZnC12 wit...Three new metal-organic frameworks （MOFs）, namely [Zn（tib）（PDC）] （1）, [Zn3（tib）2（CHDC）3]·8H20 （2） and [Zn3（tib）2（BTC）2]·4.95H20 （3） were synthesized by hydrothermal reactions of ZnC12 with 1,3,5-tris（l-imidazolyl）- benzene （tib） and different carboxylate ligands of 2,6-pyridinedicarboxylic acid （H2PDC）, 1,4-cyclohexanedicar- boxylic acid （H2CHDC） and 1,3,5-benzenetriacetic acid （H3BTC）, respectively. The complexes were characterized by 1R, thermogravimetric analysis, single crystal and powder X-ray diffractions. Complex 1 has a binuclear structure, in which one imidazole group of tib is free of coordination, while 2 has three-dimensional （3D） framework with the CHDC-Zn microcycles filled into the tib-Zn 3D net, and 3 is a 2-fold interpenetrating 3D framework with the interconnection of two one-dimensional （ID） chains formed by BTC-Zn and tib-Zn, respectively. The different structures of 1 3 are resulted from the distinct carboxylate ligands. In addition, complexes 1-3 show obvious emissions at room temperature in the solid state.展开更多
文摘Three new metal-organic frameworks （MOFs）, namely [Zn（tib）（PDC）] （1）, [Zn3（tib）2（CHDC）3]·8H20 （2） and [Zn3（tib）2（BTC）2]·4.95H20 （3） were synthesized by hydrothermal reactions of ZnC12 with 1,3,5-tris（l-imidazolyl）- benzene （tib） and different carboxylate ligands of 2,6-pyridinedicarboxylic acid （H2PDC）, 1,4-cyclohexanedicar- boxylic acid （H2CHDC） and 1,3,5-benzenetriacetic acid （H3BTC）, respectively. The complexes were characterized by 1R, thermogravimetric analysis, single crystal and powder X-ray diffractions. Complex 1 has a binuclear structure, in which one imidazole group of tib is free of coordination, while 2 has three-dimensional （3D） framework with the CHDC-Zn microcycles filled into the tib-Zn 3D net, and 3 is a 2-fold interpenetrating 3D framework with the interconnection of two one-dimensional （ID） chains formed by BTC-Zn and tib-Zn, respectively. The different structures of 1 3 are resulted from the distinct carboxylate ligands. In addition, complexes 1-3 show obvious emissions at room temperature in the solid state.
