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Issue 17, 2015
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Discrete polynuclear manganese(ii) complexes with thiacalixarene ligands: synthesis, structures and photophysical properties

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Abstract

The synthesis, crystal structure and photophysical properties of the new compound [Mn4(ThiaSO2)2F][K(18-crown-6)], ThiaSO2 = p-tert-butylsulphonylcalix[4]arene, are presented and compared to the ones of [Mn4(ThiaSO2)2F]K. The strong orange luminescence is attributed to the Mn2+ centred 4T16A1 transition. Its temperature and pressure dependence and quenching by molecular dioxygen are reported. The latter is attributed to energy transfer from the 4T1 state exciting dioxygen to its 1+g state. In the solid state, the quenching is much more efficient in [Mn4(ThiaSO2)2F][K(18-crown-6)] than in [Mn4(ThiaSO2)2F]K. This is attributed to the open pore structure of the former allowing fast diffusion of dioxygen into the crystal lattice.

Graphical abstract: Discrete polynuclear manganese(ii) complexes with thiacalixarene ligands: synthesis, structures and photophysical properties

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Article information


Submitted
27 Feb 2015
Accepted
23 Mar 2015
First published
23 Mar 2015

Dalton Trans., 2015,44, 7991-8000
Article type
Paper

Discrete polynuclear manganese(II) complexes with thiacalixarene ligands: synthesis, structures and photophysical properties

Y. Suffren, N. O'Toole, A. Hauser, E. Jeanneau, A. Brioude and C. Desroches, Dalton Trans., 2015, 44, 7991
DOI: 10.1039/C5DT00827A

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