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Title: Novel uranyl(VI) complexes incorporating ethynyl groups as potential halide chemosensors: an experimental and computational approach
Author: Bartocci, Silvia
Sabaté, Ferran
Mihan, Francesco Yafteh
Bosque Pueyo, Ramón
Rodríguez Raurell, Laura
Dalla Cort, Antonella
Keywords: Halurs
Issue Date: 1-Jan-2017
Publisher: Gordon and Breach.
Abstract: The synthesis of two novel Uranyl-salophen complexes, 1 and 2, decorated with ethynyl substituents, and the study in chloroform of their binding properties toward three different tetrabutylammonium halide salts, i.e. fluoride, chloride, bromide, are here reported. Such derivatives proved to be efficient halide receptors. The presence of two ethynyl groups in the para position, with respect to the phenoxide oxygens, seemed to be accountable for the moderate emission shown by complex 1. Surprisingly, instead, complex 2 does not show such property. The possibility of 1 to form dimers in non-coordinating solvents provides an explanation for such difference, since emission can be induced by the aggregation. This finding provides an unprecedented example of aggregation induced emission (AIE) for metal salophen derivatives. Moreover DFT calculations provide theoretical insight to the formation of host-guest complexes. Their stabilities were calculated in vacuum and in chloroform and the results are perfectly in agreement with the experimental data.[GRAPHICS].
Note: Versió postprint del document publicat a:
It is part of: Supramolecular Chemistry, 2017, vol. 29, num. 11, p. 922-927
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ISSN: 1061-0278
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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