A series of novel lanthanide carboxyphosphonates with a 3D framework structure: synthesis, structure, and luminescent and magnetic properties

作者：Chen, Kai; Dong, Da-Peng; Sun, Zhen-Gang^*; Jiao, Cheng-Qi; Li, Chao; Wang, Cheng-Lin; Zhu, Yan-Yu; Zhao, Yan; Zhu, Jiang; Sun, Shou-Hui; Zheng, Ming-Jing; Tian, Hui; Chu, Wei

来源：Dalton Transactions, 2012, 41(36): 10948-10956.

DOI：10.1039/c2dt30363a

• CRYSTAL-STRUCTURES
• CARBOXYLATE-PHOSPHONATES
• COORDINATION POLYMERS
• THERMAL-STABILITY
• HELICAL CHAINS
• OXALATOPHOSPHONATES
• COMPLEXES
• STATE
• FLUORESCENCE
• RESONANCE

By introduction of 1,4-benzenedicarboxylic acid as the second organic ligand, a series of novel lanthanide carboxyphosphonates with a 3D framework structure, namely, [Ln(3)(H2L)(HL)(2)(bdc)(2)(H2O)].7H(2)O (Ln = La (1), Ce (2), Pr (3), Nd (4), Sm (5), Eu (6), Gd (7), Tb (8); H3L = H2O3PCH2NC5H9COOH; H(2)bdc = HOOCC6H4COOH) have been synthesized under hydrothermal conditions. Compounds 1-8 are isostructural and feature a 3D framework in which Ln(III) polyhedra are interconnected by bridging {CPO3} tetrahedra into 2D inorganic layers parallel to the ab plane. The organic groups of H(2)L(-)are grafted on the two sides of the layer. These layers are further cross-linked by the bdc(2-) ligands from one layer to the Ln atoms from the other into a pillared-layered architecture with one-dimensional channel system along the a axis. The thermal stability of compounds 1-8 has been investigated. Luminescent properties of compounds 5-8, and the magnetic properties of compound 8 have also been studied.

• 出版日期2012
• 单位辽宁师范大学