Octahedral molybdenum cluster complexes with aromatic sulfonate ligands

Autor: Efremova, Olga A., Vorotnikov, Yuri A., Brylev, Konstantin A., Vorotnikova, Natalya A., Novozhilov, Igor N., Kuratieva, Natalia V., Edeleva, Mariya V., Benoit, David M., Kitamura, Noboru, Mironov, Yuri V., Shestopalov, Michael A., Sutherland, Andrew J.
Jazyk: angličtina
Rok vydání: 2016
ISSN: 1477-9234
Popis: 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].
Databáze: OpenAIRE