Abstract
Three coordination polymers, namely, {[Co(L1)(HBTC)]·0.5L1}n (I), {[Co(L2)(HBTC)]·H2O}n (II), {[Co(L3)(HBTC)]·H2O}n (III), have been synthesized based on three semi-rigid nitrogen-containing ligands (L1 = 4,4'-(2,5-dimethoxy-1,4-phenylene)dipyridine; L2 = 4,4'-(2,5-diethoxy-1,4-phenylene)dipyridine; L3 = 4,4'-(2,5-dibutoxy-1,4-phenylene)dipyridine) and 1,3,5-benzenetricarboxylic acid (H3BTC). Both I and II are a 4-connected uninodal sql net with point symbol {44∙62}, III is a 6-connected uninodal rob net with point symbol {48∙66∙8}. The complexes were characterized by X-ray single-crystal diffraction (CIF files CCDC nos. 2034103 (II), 2034104 (III)), PXRD, IR spectra and TGA. Interestingly, the structural diversity of these complexes derived from the length of substituents on Ln (n = 1, 2, 3) ligands.
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Funding
This work was supported by quality engineering of Anqing Normal University in 2018 (2018aqnujyxm052), anhui provincial quality engineering project in 2019 (2019jyxm0291) and anhui natural science foundation youth project (1908085QB49).
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Zhang, C.L., Qian, J.L., Zhou, T. et al. The Length of Substituents on Ligands Regulates the Structural Diversity of Coordination Polymers. Russ J Coord Chem 47, 922–931 (2021). https://doi.org/10.1134/S1070328421120058
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DOI: https://doi.org/10.1134/S1070328421120058