摘要:
Ruthenium piano-stool complexes incorporating the new bidentate aminoalkylphosphine ligand 1,2-bis(dipyrrolidin-1-ylphosphino) ethane (dpyrpe, I) or its monodentate counterpart bis(pyrrolidin-1-yl) methylphosphine (pyr(2)PMe, II) have been prepared, [(C5R5)RuCl(PP)] (R = Me and PP = dpyrpe, 1; R = Me and PP = (pyr(2)PMe)(2), 2; R = H and PP = dpyrpe, 3). Complexes 2 and 3 have been characterized by X-ray crystallography. Complexes 1 and 2 react with NaBAr4f in the presence of ligand L to yield [Cp*Ru(L)(dpyrpe-kappa P-2)][BAr4f] (L = MeCN, 4a; CO, 4b; N-2, 4c) and [Cp*Ru(L)(pyr(2)PMe)(2)][BAr4f] (L = MeCN, 5a; CO, 5b; N-2, 5c). Complex 4a was crystallographically characterized. The CO complexes 4b and 5b were examined using IR spectroscopy in an attempt to establish the electron-donating capabilities of I and II. Complex 1 oxidatively adds H-2 in the presence of NaBAr4f to yield the Ru(IV) dihydride [Cp*RuH2(dpyrpe-kappa P-2)][BAr4f], 7. (C) 2011 Elsevier B.V. All rights reserved.