A hybrid material based on [Mo6Br14]2− inorganic cluster units and [BEDO-TTF]+ organic monocationic radicals: Synthesis, structure and properties of (BEDO-TTF)2Mo6Br14(PhCN)4

The first charge transfer salt based on non- dimerized [BEDO-TTF]+ monocationic radical (BEDO-TTF=bis(ethylenedioxy)tetrathiafulvalene) associated with [Mo6Br14]2− cluster anions has been synthesized by conventional electro-oxidation and characterized by single crystal X-ray diffraction, UV–VIS–NIR absorption and magnetic susceptibility measurements. (BEDO-TTF)2Mo6Br14(PhCN)4 crystallizes in the monoclinic system, space group P21/n, a=10.414(4) Å, b=21.711(7) Å, c=15.958(5) Å, β=93.65(3)°, V=3601(2) Å3, Z=2Z=2, R1=0.0578R1=0.0578, wR2=0.0731wR2=0.0731. The structure of this hybrid compound is built up from a [BEDO-TTF]+ and PhCN (benzonitrile) organic framework in which are hosted the [Mo6Br14]2− inorganic cluster units. It results in non- dimerized [BEDO-TTF]+ cations that exhibit a paramagnetic behavior characteristic of one unpaired electron.

The structure of (BEDO-TTF)2Mo6Br14(PhCN)4 is built up from a [BEDO-TTF]+ and PhCN organic framework in which are hosted [Mo6Br14]2- inorganic cluster units.Figure optionsDownload as PowerPoint slide