Unexpected photochemistry and charge-transfer complexes of [CB11H12]−carborane

Francesc X. Llabrés i Xamena; Laura Teruel; María S. Galletero; Avelino Corma; Hermenegildo García

doi:10.1039/B715303A

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Unexpected photochemistry and charge-transfer complexes of [CB₁₁H₁₂]⁻carborane†

Francesc X. Llabrés i Xamena,^a Laura Teruel,^a María S. Galletero,^b Avelino Corma*^a and Hermenegildo García*^a

Author affiliations

* Corresponding authors

^a Instituto de Tecnología Química, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
E-mail: hgarcia@qim.upv.es

^b Servicio Central de Espectrometria de Masas, Universidad de Valencia, Av. Dr. Moliner 100, Burjassot, Spain

Abstract

Although the [CB₁₁H₁₂]⁻carborane does not exhibit an absorption band in UV, its triplet excited state can be generated upon 308 nm laser excitation; also unexpectedly carborane acts as electron donor forming a charge transfer complex with methylviologen that upon illumination gives rise to viologen radical cation.

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Supplementary files

Fig. S1: Dependence of the absorption at 420 nm of a Cs[CB ₁₁H ₁₂] methanolic solution upon laser power. Fig. S2: Quenching of Cs[CB ₁₁H ₁₂] with nitromethane. Fig. S3: ESI-MS of a coloured equimolar mixture of Cs[CB ₁₁] and MV(PF ₆) ₂ in acetonitrile PDF (125K)

Article information

DOI: https://doi.org/10.1039/B715303A
Article type: Communication
Submitted: 04 Oct 2007
Accepted: 08 Nov 2007
First published: 15 Nov 2007

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Chem. Commun., 2008, 499-501

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Unexpected photochemistry and charge-transfer complexes of [CB₁₁H₁₂]⁻carborane

F. X. Llabrés i Xamena, L. Teruel, M. S. Galletero, A. Corma and H. García, Chem. Commun., 2008, 499 DOI: 10.1039/B715303A

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