Title
Exploring the <tex>$C-X\cdots\pi$</tex> halogen bonding motif : an infrared and Raman study of the complexes of <tex>$CF_{3}X$</tex> (X = Cl, Br and I) with the aromatic model compounds benzene and toluene Exploring the <tex>$C-X\cdots\pi$</tex> halogen bonding motif : an infrared and Raman study of the complexes of <tex>$CF_{3}X$</tex> (X = Cl, Br and I) with the aromatic model compounds benzene and toluene
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Bazel ,
Subject
Chemistry
Source (journal)
Molecules: a journal of synthetic chemistry and natural product chemistry. - Bazel
Volume/pages
18(2013) :6 , p. 6829-6851
ISSN
1420-3049
ISI
000320770800039
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The formation of halogen bonded complexes formed between the trifluorohalomethanes CF3Cl, CF3Br and CF3I and the Lewis bases benzene and toluene at temperatures below 150K was investigated using FTIR and Raman spectroscopy. Experiments using liquid krypton as solvent show that for both CF3Br and CF3I substantial fractions of the monomers can be involved in 1: 1 complexes. In addition, weak absorptions illustrating the formation of 2: 1 complexes between CF3I and benzene are observed. Using spectra recorded at temperatures between 120 and 140 K, observed information on the relative stability was obtained for all complexes by determining the complexation enthalpies in solution. The resulting values for CF3Br. benzene, CF3I. benzene and (CF3I)(2)center dot benzene are -6.5(3), -7.6(2) and -14.5(9) kJ mol(-1). The values for CF3Br. toluene and CF3I center dot toluene are -6.2(5) and -7.4(5) kJ mol(-1). The experimental complexation enthalpies are compared with theoretical data obtained by combining results from MP2/aug-cc-pVDZ(-PP) and MP2/aug-cc-pVTZ(-PP) ab initio calculations, from statistical thermodynamical calculations and from Monte Carlo Free Energy Perturbation simulations. The data are also compared with results derived for other C-X center dot center dot center dot pi halogen bonded complexes involving unsaturated Lewis bases such as ethene and ethyne.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/9054dc/5082.pdf
E-info
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000320770800039&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000320770800039&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000320770800039&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
Handle