Alkali‐Metal Salts of Aromatic Carboxylic Acids: Liquid Crystals without Flexible Chains

Autor:	Koen Binnemans, Luc Van Meervelt, Rik Van Deun, Peter Nockemann, Kristof Van Hecke, Jan Ramaekers
Rok vydání:	2005
Předmět:	chemistry.chemical_classification Phase transition Substituent Mesophase Crystal structure Alkali metal Inorganic Chemistry Metal chemistry.chemical_compound chemistry Liquid crystal visual_art Polymer chemistry visual_art.visual_art_medium Organic chemistry Alkyl
Zdroj:	European Journal of Inorganic Chemistry. 2005:563-571
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.200400394
Popis:	The alkali-metal salts of meta-substituted benzoic acids exhibit a smectic A mesophase at high temperatures. These compounds are examples of liquid crystals without terminal alkyl chains. The influence of the metal ion and of the type of substituents on the transition temperatures is discussed. Compounds with the substituent in the ortho- and para-positions are non-mesomorphic. The crystal structures of the compounds Rb(C7H4ClO2)(C7H4ClO2H), Na(C7H4IO2)(H2O), K(C7H4ClO2)(C7H4ClO2H) and Rb(C7H4BrO2)(C7H4BrO2H) have been determined by X-ray crystallography. These compounds possess a layerlike structure in the solid state. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
Databáze:	OpenAIRE
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