The addition of protons and metallic electrophiles to the electron-rich RuRu bond of [Ru 2(μ,-dan)(CO) 4(P iPr 3) 2]. X-ray structure of [Ru 2(μ-AgPPh 3)(μ-dan)(CO) 4(P iPr 3) 2][BF 4]·CH 2Cl 2 (dan=1,8-diamidonaphthalene)

Abstract

The ruthenium(I) complex [Ru 2(μ-dan)(CO) 4(P iPr 3) 2] ( 1) (dan= 1,8-diamidonaphthalene) reacts with HBF 4·OEt 2, [AuCI(PPh 3)]/TIPF 6 and AgBF 4/PPh 3 to give the cationic complexes [Ru 2(μ-M)(μ- dan)(CO) 4(P iPr 3) 2] + (M=H (2), AuPPh 3 (3), AgPPh 3 ( 4)), while the reactions with [AuCl(tht)] (tht = tetrahydrothiophene) and AgO 2CCF 3 give the neutral derivatives [Ru 2(μ-M)(μ-dan)(CO) 4(p ipr 3) 2] (M=AuCI (5), AgO 2CCF 3 ( 6)). Complex 1 also reacts with SnCl 2 to give [Ru 2(μ-SnCle 2)(μ- dan)(CO) 4(P iPr 3) 2] (7), hut in solution it dissociates SnCI 2 unless a large excess of the latter is present. In all cases, the added electrophiles symmetrically bridge the RuRu bond of complex 1, as indicated by IR and NMR spectroscopies. The structure of complex 4 has been confirmed by X-ray diffraction methods.