title: Tris[(alkylthio)methyl]silanes: Syntheses and Structures of Chromium, Molybdenum, and Tungsten Complexes with a Tripodal Thioether Ligand.
abstract: The first member of a new family of tripodal thioether ligands, the methyltris[(alkylthio)methyl]silanes MeSi(CH(2)SR)(3) (R = Me), has been synthesized and characterized. Reactivity studies lead to the isolation of the complete series of group 6 metal carbonyl derivatives {eta(3)-MeSi(CH(2)SMe)(3)}M(CO)(3) (M = Cr, Mo, W), whose structures have been determined by single-crystal X-ray diffraction. The three complexes are isomorphous and display distorted octahedral structures with face-capping tridentate thioether ligands. {eta(3)-MeSi(CH(2)SMe)(3)}Cr(CO)(3) is monoclinic, P2(1)/c, a = 8.1658(2) Å, b = 15.0563(2) Å, c = 26.5791(3) Å, beta = 90.3653(6) degrees, V = 3267.74(8) Å(3), Z = 8. {eta(3)-MeSi(CH(2)SMe)(3)}Mo(CO)(3) is monoclinic, P2(1)/c, a = 8.34630(6) Å, b = 15.2747(2) Å, c = 27.1865(4) Å, beta = 90.8987(9) degrees, V = 3465.44(10) Å(3), Z = 8. {eta(3)-MeSi(CH(2)SMe)(3)}W(CO)(3) is monoclinic, P2(1)/c, a = 8.1582(2) Å, b = 14.9903(2) Å, c = 26.7268(4) Å, beta = 90.6568(8) degrees, V = 3268.30(9) Å(3), Z = 8.
authors.affiliation: Department of Chemistry and Biochemistry, The University of Delaware, Newark, Delaware 19716.
authors.forename: Hing W.
authors.initials: HW
authors.lastname: Yim
authors.forename: Linh M.
authors.initials: LM
authors.lastname: Tran
authors.forename: Ebern D.
authors.initials: ED
authors.lastname: Dobbin
authors.forename: Daniel
authors.initials: D
authors.lastname: Rabinovich
authors.forename: Louise M.
authors.initials: LM
authors.lastname: Liable-Sands
authors.forename: Christopher D.
authors.initials: CD
authors.lastname: Incarvito
authors.forename: Kin-Chung
authors.initials: KC
authors.lastname: Lam
authors.forename: Arnold L.
authors.initials: AL
authors.lastname: Rheingold