REDUCTION OF ACETONITRILE LIGAND ON W(PHC-CPH)(3)(NCME) AND W(ETA(4)-C(4)PH(4))(PHC-CPH)(2)(NCME) - CRYSTAL-STRUCTURE OF W(PHC-CPH)(3)(NH=C(ME)(2))

The imine complexes W(PhC=CPh)(3)(NH=C(Me)(2)) (1) and W(PhC=CPh)(3)(N H=C(Ph)Me) (2) have been prepared by sequential treatment of W(PhC=CPh )(3)(NCMe) with MeLi and PhLi, respectively, and H2O. However, treatin g W(PhC=CPh)(3)(NCMe) with LiHBEt(3) and H2O in sequence produces the amine complex W(PhC=CPh)(3)(NH(2)Et) (3). Similar treatment of W(eta(4 )-C(4)Ph(4))(PhC=CPh)(3)(NCMe) with LiHBEt(3)/H2O and PhLi/H2(O) yield s W(eta(4)-C(4)Ph(4))(PhC=CPh)(2)(NH(2)Et) (4) and W(eta(4)-C(4)Ph(4)) (PhC=CPh),(NH=C(Ph)Me) (5), respectively. Compound 1 crystallizes in s pace group P2(1)/c with a = 10.075(2) Angstrom, b = 10.474(3) Angstrom , c = 32.906(7) Angstrom, beta = 94.88(2)degrees, V = 3460(1) Angstrom (3), Z = 4, and R(F) = 0.026.