Synthesis of Lanthanide Coordination Polymers with Benzophenone-4,4-dicarboxylate: Effect of Lantha

• 作 者: 王轶博 金林培
• 机 构: Department of Chemistry, Beijing Normal University, Beijing 100875, China,Department of Chemistry, B
• 出 处: Chinese Journal of Chemistry
• 发表日期: 2004年11期
• 关键词: carboxyl bridging chelating coordinated complexes interlayer bonds distorted cov

Four lanthanide coordination polymers with benzophenone-4,4-dicarboxylic acid (H2bpndc) and 1,10-phenan- throline (phen), [Ln2(bpndc)3(phen)] (Ln=La (1), Pr (2) and Tb (3)), [Yb(bpndc)1.5(phen)]0.5H2O (4) were ob-tained through solvothermal synthesis. The crystallographic data show that 1, 2, and 3 are isostructural, the Ln(III) ions in 1, 2 and 3 are all eight- and ten-coordinated, respectively, and thus the Ln(III) ions are connected by bpndc ligands, resulting in an interpenetrating 3D structure. While in 4, the Yb(III) ions are eight-coordinated and con-nected by bpndc ligands into a 3D structure with 1D rhombic channels, which result from the effect of lanthanide contraction from La(III) to Yb(III) ions, and the bpndc ligands in 1, 2, 3, and 4 display three types of coordination modes.

Four lanthanide coordination polymers with benzophenone-4,4-dicarboxylic acid (H2bpndc) and 1,10-phenanthroline (phen), [Ln2 (bpndc) 3 and Tb (3)), [Yb (bpndc) 1.5 (phen)] 0.5H2O (4) were ob- tained through solvothermal synthesis. The crystallographic data show that 1, 2, and 3 are isostructural, the Ln (III) ions while 1, 2 and 3 are all eight- and ten-coordinated, respectively, and thus the Ln (III) ions are connected by bpndc ligands, resulting in an interpenetrating 3D structure. While in 4, the Yb (III) ions are eight -coordinated and con-nected by bpndc ligands into a 3D structure with 1D rhombic channels, which results from the effect of lanthanide contraction from La (III) to Yb (III) ions, and the bpndc ligands in 1, 2, 3, and 4 display three types of coordination modes.