Radiation induced topotactic [2+2] dimerisation of acrylate derivatives among the layers of a CaFe layered double hydroxide followed by IR spectroscopy

Summary, in English

Various acrylates [E-phenylpropenoate, E-3(4'-nitrophenyl)propenoate, E-3(2',5'-difluorphenyl)propenoate, E-3(2'-thienyl)propenoate, E-3(4'-imidazolyl)propenoate or E-2,3-dimethylpropenoate] were successfully intercalated into Ca(II)Fe(III) layered double hydroxide (CaFe - LDH) verified by a range of instrumental methods. The possible arrangements for the organic anions were suggested on the basis of basal spacing data, layer thickness and the dimensions of the quantum chemically optimised structures of the acrylate ions. Using the acrylate CaFe LDHs as reactant-filled nanoreactors, photoinitiated topotactic [2 + 2] cyclisation reactions followed by IR spectroscopy could be performed with many representatives [E-phenylpropenoate-, E-3(4'-nitrophenyl)propenoate-, E-3(2',5'-difluorphenyl)propenoate- or E-3(2'-thienyl)propenoate-CaFe-LDHs] resulting in cyclobutane derivatives within the layers of the host material indicating that there were domains where the intercalated anions were in close proximity to each other and in proper arrangement for the reaction to occur. (C) 2012 Elsevier B.V. All rights reserved.

• Author: D. F. Sranko; Sophie Canton; Anders Engdahl; Sz. Murath; A. Kukovecz; Z. Konya; M. Sipiczki; P. Sipos; I. Palinko
• Department/s: MAX IV Laboratory
• Publishing year: 2013
• Language: English
• Pages: 279-285
• Publication/Series: Journal of Molecular Structure
• Volume: 1044
• Links: http://dx.doi.org/10.1016/j.molstruc.2012.09.063
• Document type: Journal article
• Publisher: Elsevier
• Topic: Physical Sciences; Natural Sciences
• Keywords: Intercalation in CaFe layered double hydroxide; Acrylate derivatives; Characterisation; Irradiation induced [2+2] topotactic cyclisation; Selectivity in the confined space
• Status: Published
• ISBN/ISSN/Other: ISSN: 0022-2860