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Updated: Jun 24, 2026
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Novel dense organic-lanthanide hybrid architectures: syntheses, structures and magnetic properties
Zheng-Shuai Bai1, Jing Xu, Taka-aki Okamura
1Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, 210093, China.
Abstract:
Six novel three-dimensional (3D) dense organic-lanthanide(III) frameworks with formula {[Ln(HBPTCA)(H2O)].3H2O}n [Ln = La (1), Ce (2), Sm (3)] and [Ln4(BPTCA)3(H2O)4]n [Ln = Tb (4), Dy (5), Ho (6)] were obtained by reactions of the corresponding lanthanide nitrate salt with 4,4'-bipyridine-2,2',6,6'-tetracarboxylic acid (H4BPTCA) under different conditions. Complexes 1-3 have the same structure with (4, 6(2))(2)(4(2), 6(10), 8(3)) topology, which is rare binodal (3, 6)-connecting rutile structure, while the complexes 4-6 also with the same structure have different topology of (4(2), 6)(4)(6, 8(2))(4)(4(3), 6(3))(4)(4(2), 6(4))(6)(4(4), 6(5), 8(5), 10). The results indicate that the reaction conditions have great influence on the structure of the resulted complexes in this system. In addition, the H4BPTCA was found to be an effective bridging ligand for construction of novel lanthanide-based dense hybrids, and two new coordination modes of the BPTCA4- were found in the complexes. The photoluminescent property of 4 and magnetic properties of 2, 5 and 6 were also investigated.
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