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Issue 39, 2016
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Octahedral molybdenum cluster complexes with aromatic sulfonate ligands

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Abstract

This article describes the synthesis, structures and systematic study of the spectroscopic and redox properties of a series of octahedral molybdenum metal cluster complexes with aromatic sulfonate ligands (nBu4N)2[{Mo6X8}(OTs)6] and (nBu4N)2[{Mo6X8}(PhSO3)6] (where X is Cl, Br or I; OTs is p-toluenesulfonate and PhSO3 is benzenesulfonate). All the complexes demonstrated photoluminescence in the red region and an ability to generate singlet oxygen. Notably, the highest quantum yields (>0.6) and narrowest emission bands were found for complexes with a {Mo6I8}4+ cluster core. Moreover, cyclic voltammetric studies revealed that (nBu4N)2[{Mo6X8}(OTs)6] and (nBu4N)2[{Mo6X8}(PhSO3)6] confer enhanced stability towards electrochemical oxidation relative to corresponding starting complexes (nBu4N)2[{Mo6X8}X6].

Graphical abstract: Octahedral molybdenum cluster complexes with aromatic sulfonate ligands

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Supplementary files

Article information


Submitted
19 Jul 2016
Accepted
30 Aug 2016
First published
30 Aug 2016

This article is Open Access

Dalton Trans., 2016,45, 15427-15435
Article type
Paper

Octahedral molybdenum cluster complexes with aromatic sulfonate ligands

O. A. Efremova, Y. A. Vorotnikov, K. A. Brylev, N. A. Vorotnikova, I. N. Novozhilov, N. V. Kuratieva, M. V. Edeleva, D. M. Benoit, N. Kitamura, Y. V. Mironov, M. A. Shestopalov and A. J. Sutherland, Dalton Trans., 2016, 45, 15427
DOI: 10.1039/C6DT02863B

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