Dihydrogen complexes: striking effect of ion pairing to BF4− on the rotation of coordinated dihydrogen and the 19F relaxation time

Andrés G. Algarra; María J. Fernández-Trujillo; Agustí Lledós; Manuel G. Basallote

doi:10.1039/B906330G

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Dihydrogen complexes: striking effect of ion pairing to BF₄⁻ on the rotation of coordinated dihydrogen and the ¹⁹F relaxation time†

Andrés G. Algarra,^a María J. Fernández-Trujillo,^a Agustí Lledós*^b and Manuel G. Basallote*^a

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* Corresponding authors

^a Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain
E-mail: manuel.basallote@uca.es
Fax: +34 956 016382
Tel: +34 956 016303

^b Departament de Química, Edifici Cn, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Catalonia, Spain
E-mail: agusti@klingon.uab.es
Fax: +34 93 5812920
Tel: +34 93 5811716

Abstract

Unexpected changes in the T₁ values for the ¹⁹F NMR signal of the BF₄⁻ anion in the presence of dihydrogen complexes reveal that ion pairing with BF₄⁻⋯H₂ interactions of different strengths can lead to significant changes in the rotation barrier for coordinated dihydrogen.

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Supplementary files

Figures containing plots of T₁ values under different experimental conditions,computational details, and a collection of Cartesian coordinatesand optimized geometries for all the species discussed in thetext PDF (6266K)

Article information

DOI: https://doi.org/10.1039/B906330G
Article type: Communication
Submitted: 31 Mar 2009
Accepted: 04 Jun 2009
First published: 22 Jun 2009

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Chem. Commun., 2009, 4563-4565

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Dihydrogen complexes: striking effect of ion pairing to BF₄⁻ on the rotation of coordinated dihydrogen and the ¹⁹F relaxation time

A. G. Algarra, M. J. Fernández-Trujillo, A. Lledós and M. G. Basallote, Chem. Commun., 2009, 4563 DOI: 10.1039/B906330G

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