Novel urea/thiourea-betaine inclusion compounds consolidated by host-guest hydrogen bonds. Issue 1 (22nd November 2021)

• Record Type: Journal Article
• Authors: Yang, Yuan; Lu, Zhiyang
• Is Part Of: Molecular crystals and liquid crystals. Volume 722:Issue 1(2021)
• Page Start: 47
• Page End: 57
• Publication Date: 2021-11-22
• Subjects: Betaine -- hydrogen bonds -- inclusion compounds -- thiourea -- urea; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2020.1856616
• Languages: English
• ISSNs: 1542-1406

Abstract

Abstract: Two new inclusion compounds, (CH3 )3 N + CH2 COO − ·2(NH2 )2 CS (1 ) and (CH3 )3 N + CH2 COO − ·2(NH2 )2 CO (2 ), have been prepared and characterized by X-ray crystallography. In the crystal structure of 1, the cationic moieties are trapped in the channel-like lattice with quasi-rectangular section constructed from the linkage of the carboxyl anionic moieties and thiourea ribbons formed by the centrosymmetric hydrogen-bonded thiourea dimers. In the honeycomb-like stereo host lattice of two that are built by urea molecules, each channel is parallel to the b axis, and every two cationic moieties lie in the same column but link different ribbons with host-guest hydrogen bonds.