Hydrogen-Bonded Anionic Host Lattices Constructed with Isocyanurate and Thiourea/Urea

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• 作者：Chi-Keung Lam ; Sam Chun-Kit Hau ; Chung-Wah Yau ; Thomas C. W. Mak
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：February 3, 2016
• 年：2016
• 卷：16
• 期：2
• 页码：759-773
• 全文大小：1303K
• ISSN：1528-7505

文摘

A series of seven inclusion complexes containing the isocyanurate ion, thiourea/urea, and selected quaternary ammonium ions as templates, namely, (CH<sub>3sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>· 3(NH<sub>2sub>)<sub>2sub>CS·H<sub>2sub>O (1), (CH<sub>3sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>·(NH<sub>2sub>)<sub>2sub>CS (2), (C<sub>2sub>H<sub>5sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>·(NH<sub>2sub>)<sub>2sub>CS (3), (n-C<sub>3sub>H<sub>7sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>·(NH<sub>2sub>)<sub>2sub>CS·H<sub>2sub>O (4), 3[(n-C<sub>4sub>H<sub>9sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>]·5(NH<sub>2sub>)<sub>2sub>CS·3H<sub>2sub>O (5), (C<sub>2sub>H<sub>5sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>·(NH<sub>2sub>)<sub>2sub>CO (6) and (n-C<sub>3sub>H<sub>7sub>)<sub>4sub>N<sup>+sup>C<sub>3sub>H<sub>2sub>N<sub>3sub>O<sub>3sub><sup>–sup>·2(NH<sub>2sub>)<sub>2sub>CO·H<sub>2sub>O (7), have been prepared and characterized by X-ray crystallography. Complex (1) features a hydrogen-bonded molecular cage in which two (CH<sub>3sub>)<sub>4sub>N<sup>+sup> cations can be accommodated. Complexes (2) and (7) are channel-type inclusion compounds. In (2), the thiourea sulfur atom does not participate in host lattice construction, while (7) contains several intersecting channel systems that are formed by the cross-linkage of two sets of isocyanurate–urea–water ribbons. Complexes (3)–(6) exhibit layer-type architectures. The host layers of complexes (3) and (6) are constructed by two distinct rosette motifs produced by isocyanurate ion and thiourea/urea in a ratio of 2:1 and 1:2, respectively. The isocyanurate–thiourea–water (1:1:1) ribbons are cross-linked together to generate the host framework of complex (4), while a new type of supramolecular rosette ribbon is identified in complex (5).