Multielectron Donors Based on TTF−Phosphine and Ferrocene−Phosphine Hybrid Complexes of a Hexarhenium(III) Octahedral Cluster Core
摘要:
Electroactive molecular materials precursors are obtained through coordination chemistry of the hexarhenium cluster core [Re6Se8](2+) on the six available apical positions with redox-active phosphines bearing tetrathiafulvalene- or ferrocene-based moieties. Single-crystal X-ray diffraction study and electrospray mass spectrometry ascertain the synthesis of these hexasubstituted electroactive clusters, containing up to 12 redox active sites. Cyclic voltammetry experiments demonstrate that these compounds can be reversibly oxidized at rather low potentials, thus allowing an easy access to the corresponding radical species which should provide new conducting and/or magnetic molecular materials.
Electroactive molecular materials precursors are obtained through coordination chemistry of the hexarhenium cluster core [Re6Se8](2+) on the six available apical positions with redox-active phosphines bearing tetrathiafulvalene- or ferrocene-based moieties. Single-crystal X-ray diffraction study and electrospray mass spectrometry ascertain the synthesis of these hexasubstituted electroactive clusters, containing up to 12 redox active sites. Cyclic voltammetry experiments demonstrate that these compounds can be reversibly oxidized at rather low potentials, thus allowing an easy access to the corresponding radical species which should provide new conducting and/or magnetic molecular materials.
Oxidation of phosphines containing two or three tetrathiafulvalene (TTF) or o-dimethyl-TTF moieties. Evidence for formation of radical polycations
作者:Fabian Gerson、Axel Lamprecht、Marc Fourmigué
DOI:10.1039/p29960001409
日期:——
only one donor moiety. These species are supposed to be the radical trications 2˙3+ or 2a˙3+ and the radical pentacations 3˙5+ or 3a˙5+. The intermediately occurring dication 22+ or 2a2+ and 32+ or 3a2+, as well as the tetracations 34+ or 3a4+, should have a triplet ground-state, while the trications 33+ or 3a3+ are expected to be quartet species.