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The title compound, [CoH(C(18)H(15)P)(2)(C(2)H(6)OS)(2)], was synthesized by the reaction of chloridotris(triphenyl-phosphane)cobalt(I), [ClCo(PPh(3))(3)], in the presence of one equivalent potassium hydridotris(pyrazol-yl)borate in dimethyl sulfoxide. The structure displays a distorted trigonal-pyramidally coordinated cobalt(I) atom, with two phosphane ligands and one DMSO ligand in the equatorial plane. The coordination is completed by one further DMSO ligand and the anionic hydride in the axial positions.

The mol-ecular structure of the title compound, [Mo(2)(CH(3)COO)(2)Cl(2)(C(30)H(25)NP(2))]·0.3CH(2)Cl(2)·1.7C(4)H(8)O, features an Mo-Mo dumbbell bridged by two acetate groups which are trans to each other. Perpendicular to the plane spanned by the acetate groups, the Ph(2)PN(Ph)PPh(2) ligand bridges both Mo atoms, having a P-N-P angle of 114.09 (19)°. In a trans position to the PNP ligand are two Cl atoms, one on each molybdenum centre. The Mo-Mo bond distance is 2.1161 (9) Å, within the range known for Mo-Mo quadruple bonds. The Mo complex is located on a crystallographic twofold rotation axis which runs through the N-C bond of the ligand. The site occupation factors of the disordered solvent molecules were fixed to 0.15 for dichloromethane and 0.85 for tetrahydrofuran.

The title compound, [NiBr(2)(C(27)H(27)NP(2))], was synthesized by the reaction of NiBr(2)(dme) (dme is 1,2-dimethoxy-ethane) with N,N-bis-(diphenyl-phosphino)isopropyl-amine in methanol/tetra-hydro-furan. The nickel(II) center is coordinated by two P atoms of the chelating PNP ligand, Ph(2)PN(iPr)PPh(2), and two bromide ions in a distorted square-planar geometry.

The title compound, [Co(C(5)H(5))(C(18)H(15)P)(2)]·0.2C(7)H(8)·0.25C(6)H(14), was synthesized by the reaction of cobaltocene, Cp(2)Co, with elemental lithium in tetra-hydro-furan in the presence of two equivalents of PPh(3). The mol-ecular structure displays a cobalt(I) center in a distorted trigonal-planar coordination environment, with one Cp and two phosphane ligands. There are two crystallographically independent mol-ecules in the asymmetric unit besides the disordered solvent molecules.