Syntheses and molecular structures of some polyfluoroaryldiynyl–ruthenium complexes

Lithiated Ru(Ctriple bond; length of mdashCCtriple bond; length of mdashCH)(dppe)Cp∗ reacts with polyfluoroaromatic compounds C6F5X (X = F, OMe, CN, NO2) and C10F8 to give novel polyfluoroaryldiynyls end-capped with the Ru(dppe)Cp∗ group. Addition of tcne to Ru(Ctriple bond; length of mdashCCtriple bond; length of mdashCC6F5)(dppe)Cp∗ afforded the butadienynyl Ru{Ctriple bond; length of mdashCC[double bond; length as m-dashC(CN)2]C(C6F5)double bond; length as m-dashC(CN)2}(dppe)Cp∗, while protonation with HBF4·OEt2 resulted in cycloaddition to give [1,3-{Cp∗(dppe)RuCtriple bond; length of mdashC}2{μ-C4H(C6F5)2}]BF4. XRD molecular structures of complexes with X = F, CN, OMe and the C10F7 derivative are reported.