Octahedral molybdenum cluster complexes with aromatic sulfonate ligands

Olga A. Efremova*, Yuri A. Vorotnikov, Konstantin A. Brylev, Natalya A. Vorotnikova, Igor N. Novozhilov, Natalia V. Kuratieva, Mariya V. Edeleva, David M. Benoit, Noboru Kitamura, Yuri V. Mironov, Michael A. Shestopalov, Andrew J. Sutherland

*Corresponding author for this work

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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].

Original languageEnglish
Pages (from-to)15427-15435
Number of pages9
JournalDalton Transactions
Volume45
Issue number39
Early online date30 Aug 2016
DOIs
Publication statusPublished - 21 Oct 2016

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This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.

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    Efremova, O. A., Vorotnikov, Y. A., Brylev, K. A., Vorotnikova, N. A., Novozhilov, I. N., Kuratieva, N. V., Edeleva, M. V., Benoit, D. M., Kitamura, N., Mironov, Y. V., Shestopalov, M. A., & Sutherland, A. J. (2016). Octahedral molybdenum cluster complexes with aromatic sulfonate ligands. Dalton Transactions, 45(39), 15427-15435. https://doi.org/10.1039/c6dt02863b