No abstract

AbstractMono-and polydentate phosphanes Me(4-x)E(CH2PMe2)x (E = Si, Sn) are prepared by the reaction of LiCH2PMe2 with Me(4-x)EClx. They are easily deprotonated at the methylen carbon atom. The preparation of BrCH2CMe2CH2PMe2 and Me2C(CH2PMe2)2 is also described. The complex formation ability is shown by the isolation of the tetrahedral nickel(0) complex [Me2Si(CH2PMe2)2]2Ni, where the diphosphane acts as a bidentate chelating ligand with heteroelement bridges. The new compounds are characterized by means of NMR spectroscopy.

No abstract

No abstract

Reaction of (T,R*)-(_+)-[Pt(OMe)2{ 1,2-C6Hi(PMePh)2}] in benzenemethanol with glycerol produces an equilibrium mixture of glycerolato-l0,20 diastereoisomers, epimeric at 20, that exist in [2H2]dichloromethane predominantly as internally h dro en bonded monomers; in a typical second-order asymmetric transformation purefrom the solution as an externally hydrogen-bonded centrosymmetric dimer of asymmetric monomers of opposite helicity.