Journal of the Chemical Society, Dalton Transactions p. 2293 - 2298 (1983)
Update date:2022-08-04
Topics:
Morandini, Franco
Consiglio, Giambattista
Straub, Barbara
Ciani, Gianfranco
Sironi, Angelo
Diastereomeric a low asymmetric induction (28-41percent) by the optically active diphosphine ligand on the chiral ruthenium atom.The absolute configuration at the ruthenium atom has little influence on the chiroptical properties of the complexes, which appear to be dominated, at least in the visible region, by the chiral conformation of the chelate ligand.The crystal structure of the title diastereomer, <(S)RuCl(η5-C5H5)-<(R)Ph2PCH(Me)CH2PPh2>>, has been investigated.It is monoclinic, space group P21, with a=9.688(3), b=15.037(4), c=10.556(2) Angstroem, β=113.54(2)deg, and Z=2.The structure was solved by Patterson and Fourier methods, and refined by least squares on the basis of 2 000 significant counter data, to a final R value of 0.042.The complex shows a distored λ conformation of the diphosphine ligand in the chelate five-membered ring, in the solid state.The Ru-Cl and Ru-P interactions are 2.444(2) and 2.277 Angstroem (mean value), respectively.
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