The structure of two analogous 16-electron piano stool molybdenum(IV) complexes, [YMol2(PMe3)2]+ (Y = Cp, Cp*)

Rinaldo Poli (1) , Arnold Rheingold (2) , Beth Owens-Waltermire (2)

1 University of Maryland [College Park]
2 University of Delaware [Newark]

The title complexes have been obtained by oxidation from the corresponding neutral Mo(III) species and have been crystallized as the I− and BF4− salts, respectively. Crystal data: [CpMoI2(PMe3)2]+I−, monoclinic, space group P21/n, a = 9.273(2), b = 8.439(2), c = 25.406(7) Å, β = 90.62(2)°, V = 1988.0(8) Å3, Z = 4, R = 0.0661, Rw = 0.0703; [Cp*MoCl0.5I1.5(PMe3)2]+ BF4−, orthorhombic, space group Pnma, a = 15.596(4), b = 11.226(3), c = 13.816(5) Å, V = 2418.9(13) Å3, Z = 4, R = 0.0706, Rw = 0.0851. The structural changes observed on going from the previously reported Mo(III) neutral complex, CpMoI2(PMe3)2, to the corresponding cation of Mo(IV), as well as those observed on going from the Cp to the Cp* Mo(IV) complex, are discussed.

Domaines: Chimie de coordination; Cristallographie

Rinaldo Poli, Arnold Rheingold, Beth Owens-Waltermire. The structure of two analogous 16-electron piano stool molybdenum(IV) complexes, [YMol2(PMe3)2]+ (Y = Cp, Cp*). Inorganica Chimica Acta, 1993, 203 (2), pp.223-227. ⟨10.1016/S0020-1693(00)81661-8⟩. ⟨hal-03534440⟩