Heteronuclear bonding between heavier Group 14 elements and transition-metals: Novel halogermylene- and stannylene transition-metal complexes L2(X)MM′L′n [L2=PhNC(Me)CHC(Me)NPh; X=Cl, I; M=Ge, Sn; M′L′n=W(CO)5, Fe(CO)4]

I. Saur , G. Rima (1) , Karinne Miqueu (2) , Heinz Gornitzka (1) , J. Barrau

1 LHFA - Laboratoire Hétérochimie Fondamentale et Appliquée
2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

Reactions of the stable heteroleptic halodivalent species L2 (X)M [L2=PhNC(Me)CHC(Me)NPh; M=Ge, X=Cl (1); X=I (2); M=Sn, X=Cl (5)] with the intermediate metal complexes W(CO)5 THF and Fe(CO) 4 have provided the new halogermylene- or stannylenetungsten- and iron-complexes L2(X)MM′L′n [M′L′ n =W(CO 5, M=Ge, X=Cl (3), X=I (4); M′L′ n =Fe(CO 4, X=Cl, M=Ge (6), M=Sn (7)] respectively; complexes 3, 4 and 6, 7 have been characterized via X-ray crystallography and a detailed discussion of their structures is presented. All the MM′ bonds are very short but calculations are consistent with the L2MX ligands being good σ-donors and very poor π-acceptors in complexes 3, 4 and 6, 7. Selective metathesis reaction between 3 and MeLi resulted in the formation of the stable monomeric complex L2(Me)GeW(CO)5 (8). © 2003 Elsevier Science B.V. All rights reserved.

Domaines: Catalyse; Chimie de coordination; Chimie organique; Polymères; Chimie théorique et/ou physique

I. Saur, G. Rima, Karinne Miqueu, Heinz Gornitzka, J. Barrau. Heteronuclear bonding between heavier Group 14 elements and transition-metals: Novel halogermylene- and stannylene transition-metal complexes L2(X)MM′L′n [L2=PhNC(Me)CHC(Me)NPh; X=Cl, I; M=Ge, Sn; M′L′n=W(CO)5, Fe(CO)4]. Journal of Organometallic Chemistry, 2003, 672 (1-2), pp.77-85. ⟨10.1016/S0022-328X(03)00144-X⟩. ⟨hal-01613268⟩