A Series of 2D and 3D Novel Lanthanide Complexes Constructed from Squarate C4O42-: Syntheses, Structures, Magnetic Properties, and Near-infrared Emission Properties

作者：Wang Li; Gu Wen^*; Deng Xiu Jun; Zeng Ling Fei; Liao Sheng Yun; Zhang Ming; Yang Lin Yan; Liu Xin

来源：Australian Journal of Chemistry, 2011, 64(10): 1373-1382.

DOI：10.1071/CH10459

The solvothermal combination of trivalent lanthanide metal precursors with a squarate ligand (H2C4O4, 3,4-dihydroxy-3-cyclobutene-1,2-dione) has afforded the preparation of a family of eight new coordination polymers, [Ln(2)(C4O4)(3)(H2O)(4)] (Ln = La-Nd, Ho) (1-5), [Ln(2)(C4O4)(3)(H2O)(8)] (Ln = Er, Dy) (6, 7), and Tb-2(C4O4)(2)(C2O4)(H2O)(4) (8). Structural analysis reveals that the squarate ligand displays versatile coordination modes to generate novel 2D and 3D frameworks. Three new coordination modes, a bidentate/monodentate mu 3 and two bidentate/monodentate mu 4 coordination modes, are first reported. In addition, the variable-temperature magnetic properties of the Pr, Nd, Ho, Dy, and Tb complexes, the solid-state near-infrared luminescence spectra of the Pr, Nd, Ho, and Er complexes, and their thermogravimetric analyses are discussed.

• 出版日期2011
• 单位南开大学