Abstract
Abstract Reaction of [Mo2(O2CR)4] (R = CF3, 1) with TCNE in toluene affords the new compound [Mo2(O2CCF3)4(TCNE)]·2C6H5CH3 (2). The structure of 2 is built on [Mo2(O2CCF3)4] fragments having the usual paddlewheel structure of 1 (Mo–Mo 2.1117(8) A) and TCNE units. Each polynitrile moiety acts as a bridging ligand between two Mo2 fragments (Mo–N 2.875(4) A) affording 1-D polymeric chains crossing in the crystal; the toluene molecules occupy the cavities between the chains. 13C NMR, IR and electrochemical data clearly show that formation of 2 does not involve electron density transfer from dimolybdenum fragment to the TCNE unit, which remains in 2 in its neutral state. To cite this article: B. Le Gall et al., C. R. Chimie 8 (2005)
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