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metal-organic compounds
The title ligand, L, forms metal complexes LW(CO)5 {pentacarbonyl(trans-1,3-di-tert-butyl-2,2,4,4-tetrafluoro-1,3-diphosphetane-P)tungsten, [W(C10H18F4P2)(CO)5], (1)} and L(AuCl)2.2CH2Cl2 {μ-(trans-1,3-di-tert-butyl-2,2,4,4-tetrafluoro-1,3-diphosphetane-P:P′)-bis(chlorogold) dichloromethane solvate, [Au2Cl2(C10H18F4P2)].2CH2Cl2, (2)}. Complex (1) crystallizes with two independent but closely similar molecules; the P—W bond is short [2.482, 2.488 (2) Å] and the P—CBu bonds are lengthened by ca 0.03 Å compared with those in the ligand disulfide, LS2 [Fild, Jones, Ruhnau & Thöne (1994), Z. Naturforsch. Teil B, 49, 1361–1367; the structure of L is not available for comparison]. The diphosphetane ring is folded by angle of 21.4 (3)/22.0 (1)° about the C
C axis, in contrast with its exact planarity in both LS2 and complex (2), which crystallizes with imposed 2/m symmetry (m for the solvent); the Au—P bond is slightly shorter than the normal range at 2.212 (2) Å. Short contacts of 3.604 (2) Å are observed between the Au and solvent Cl atoms.
C axis, in contrast with its exact planarity in both LS2 and complex (2), which crystallizes with imposed 2/m symmetry (m for the solvent); the Au—P bond is slightly shorter than the normal range at 2.212 (2) Å. Short contacts of 3.604 (2) Å are observed between the Au and solvent Cl atoms.
