Please use this identifier to cite or link to this item: https://doi.org/10.1021/cg901327m
Title: Crystallographic elucidation of chiral and helical Cu(II) polymers assembled from a heterodifunctional 1,2,3-Triazole ligand
Authors: Bai, S.-Q. 
Leelasubcharoen, S.
Chen, X.
Koh, L.L. 
Zuo, J.-L.
Hor, T.S.A. 
Issue Date: 7-Apr-2010
Citation: Bai, S.-Q., Leelasubcharoen, S., Chen, X., Koh, L.L., Zuo, J.-L., Hor, T.S.A. (2010-04-07). Crystallographic elucidation of chiral and helical Cu(II) polymers assembled from a heterodifunctional 1,2,3-Triazole ligand. Crystal Growth and Design 10 (4) : 1715-1720. ScholarBank@NUS Repository. https://doi.org/10.1021/cg901327m
Abstract: A left-handed homochiral [CuCl2(L1)]n (1) and two solvated heterochiral [CuCl2(L1)]nn(H2O) (2) and [CuBr2(L1)]nn(MeOH) (3) one-dimensional helical copper(II) coordination polymers have been self-assembled from Cu(II) with an achiral functionalized 1,2,3-triazole (L1) (L1 = 1-(2-picolyl)-4-(1-(methoxyl)- benzotriazole)-1H-1,2,3-triazole) under different conditions. They have been characterized by single-crystal X-ray diffraction (XRD) analysis. Complexes 2 and 3 have been further analyzed by powder XRD, thermogravimetric analysis, and electron paramagnetic resonance. Different conformational twists of the ligand skeleton result in different chiral organizations ' a large torsional twist (C'C'O'N) of ~59.4 in 1 results in a large screw-pitch of ~45.2 , whereas a small twist of ~6.2 in 2 and 6.7 in 3 results in a short screw-pitch of ~7.6 and 8.1 , respectively. The effect of the lattice solvates (H2O and MeOH) on the change of helical structures has also been described. © 2010 American Chemical Society.
Source Title: Crystal Growth and Design
URI: http://scholarbank.nus.edu.sg/handle/10635/93505
ISSN: 15287483
DOI: 10.1021/cg901327m
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