Coordination polymers with a semi-rigid spacer ligand in a mixed system: Roles of benzene-1,3,5-tricarboxylate anions

被引:6
作者
Chen, Chia-Jou [1 ]
Chen, Chia-Ling [1 ]
Lee, Wei-Te [1 ]
Hu, Ji-Hong [1 ]
Chhetri, Pradhumna Mahat [2 ]
Chen, Jhy-Der [1 ]
机构
[1] Chung Yuan Christian Univ, Dept Chem, Chungli, Taiwan
[2] Tribhuvan Univ, Dept Chem, Amrit Campus, Kathmandu, Nepal
关键词
Coordination polymer; Crystal structure; Topology; Benzene-1,3,5-tricarboxylate; Structural transformation; METAL-ORGANIC FRAMEWORKS; STRUCTURAL TRANSFORMATION; CRYSTAL;
D O I
10.1016/j.molstruc.2021.131252
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Reactions of divalent metal salts with N,N'-bis(3-pyridyl)terephthalamide (L) and benzene-1,3,5-tricarboxylic acid (1,3,5-H3BTC) under hydro(solvo)thermal conditions afforded five coordination polymers, {[Cd(L)(1,3,5-HBTC)]center dot 2H(2)O}(n), 1, {[Cu(L)(1,3,5-HBTC)]center dot H2O}(n), 2, {[Zn(L)(1,3,5-HBTC)]center dot 2H(2)O}(n), 3, {(H2L)(0.5)[Ni(L)(1,3,5-BTC)(H2O)(2)]center dot H2O center dot}(n), 4, and {[Ni-1.5(L)(1.5)(1,3,5-BTC)(CH3OH)(2)]center dot 3CH(3)OH}(n), 5, which have been structurally characterized by using single-crystal X-ray diffraction. Complexes 1 - 3 adopt the 3,5-connected 2D nets with the {4(2).6(7).8}{4(2).6}-3,5L2 topology, whereas 4 shows a 1D column with the 2,4C6 topology and 5 exhibits a 2D double layer with the hexagonal channels and the 3,4,4L35 topology, indicating the significant effect of the cocrystallized solvent molecules on the structural diversity of 4 and 5. Moreover, complex 5 can be transformed to 4 irreversibly under solvothermal condition, which can be ascribed to the various coordination modes of the benzene-1,3,5-tricarboxylate anions. The thermal properties of complexes 1-5 and the luminescent properties of 1 and 3 are also discussed. (C) 2021 Elsevier B.V. All rights reserved.
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页数:10
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