Sb⋯S and S⋯S interactions in the first neutral and oxidized diphenylstibino (Ph<sub>2</sub>Sb–) derivatives of the redox active tetrathiafulvalene (TTF) core
作者:Srinivasan S. Kuduva、Narcis Avarvari、Marc Fourmigué
DOI:10.1039/b205594p
日期:——
The preparation of the monostibines o-Me2TTFâSbPh2
(1) and Me3TTFâSbPh2
(2), the ortho distibine o-Me2TTF(SbPh2)2
(3) and the tetrastibine TTF(SbPh2)4
(4) is described together with their electrochemical properties and the X-ray crystal structures of the neutral 1 and 3. In the former, one intermolecular Sbâ¯S contact completes the co-ordination sphere of the antimony atom while in 3 the TTF moieties stack on top of each other with no evidence for Sbâ¯S interactions. Electrocrystallisation of 2 in the presence of [n-Bu4N]2[Mo6O19] affords a 2 â¶ 1 salt, [2]2[Mo6O19] where the 2+Ë cation radical species are associated into diamagnetic [2]22+dyads through a strong HOMOâ¯HOMO overlap interaction, separated from each other by the [Mo6O19]2â counter ions.