Layering in cinnamate structures: the role of cations and anion substituents

Crowther, Dean, Chowdhury, Masrur and Kariuki, Benson ORCID: https://orcid.org/0000-0002-8658-3897 2008. Layering in cinnamate structures: the role of cations and anion substituents. Journal of Molecular Structure 872 (1) , pp. 64-71. 10.1016/j.molstruc.2007.02.022

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Abstract

Four materials have been used to investigate the effect of the cation and ring substituent on crystal packing. In potassium 3-bromo-trans-cinnamate (1), potassium 3-chloro-trans-cinnamate (2) and sodium 3-chloro-trans-cinnamate (3), the cations are accommodated in continuous two-dimensional layers formed by the interaction between cations and anions. The CC double bonds in 1 and 2 are parallel with optimal geometry for photochemical reaction, whereas 3 is disordered. The identity of the halogen substituent influences the structure through halogen-halogen contacts. In the structure of calcium di-trans-cinnamate (4), calcium-anion coordination leads to the formation of ribbons rather than two-dimensional layers.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	Layered materials; Cinnamates; Crystal structure
Publisher:	Elsevier
ISSN:	0022-2860
Last Modified:	19 Oct 2022 10:39
URI:	https://orca.cardiff.ac.uk/id/eprint/25087

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