Die Tetrylidine [(Me3P)2(Ph3P)Rh≡SnAr*] (10) und [(Me3P)2(Ph3P)Rh≡PbAr*] (11) wurden erstmalig über eine Dehydrierung der Dihydride [(Ph3P)2RhH2SnAr*] (3) [(Ph3P)2RhH2PbAr*] (7) (Ar*=2,6-Trip2C6H3, Trip=2,4,6-Triisopropylphenyl) erhalten. Das Zinn-Dihydrid 3 wurde entweder durch Reaktion des Dihydrostannats [Ar*SnH2]− mit [(Ph3P)3RhCl] oder zwischen den Hydriden [(Ph3P)3RhH] [(Ar*SnH)2] synthet...

Cis-(Ph3P)2PtCl2 and cis-(Ph3P)2PtCO3 were prepared mechanochemically from solid reactants in the absence of a solvent; cis-(Ph3P)2PtCl2 was obtained in 98% yield after ball-milling of polycrystalline PtCl2 and Ph3P; the mechanically induced solid-state reaction of cis-(Ph3P)2PtCl2 with an excess of anhydrous K2CO3 produced cis-(Ph3P)2PtCO3 in 70% yield; the formation of transition metal comple...

Chiral thiolate complexes [Cp(NO)(Ph3P)ReSCH2R] (R = Ph, 4-C6H4Cl, 4-C6H4OMe, H, Me) are obtained from [Cp(NO)(Ph3P)ReCH3] by acid cleavage in the presence of thiol and subsequent deprotonation. Small amounts of (chloromethyl)thioether complexes [Cp(NO)(Ph3P)ReS(CH2Cl)CH2R]BF4 are formed when dichloromethane is used as a sol­ vent in this reaction. Hydride abstraction using [Ph3C]PF6 converts t...

It has been shown tha t d isubstituted butadiynes react with (Ph3P)2N i(C2H 4) [1] or (cod)2Ni [2] in the presence of Ph3P to yield m ononuclear complexes (Ph3P)2N i(//2( l :2 ) -R 'C = C C = C R ) (R ' = R = SiM e3 (1), 'B u (2) Ph (3) and R ' = 'Bu, R = SiMe3 (4) ör R ' = Ph, R = SiM e3 (5)) or dinuclear com plexes {(Ph3P)2Ni}2(//-? /2(l :2),^2(3 :4 ) -R 'C = C -C = C R ) (R ' = R = SiM e3 (6...

Polyaurated complexes of the dimethylsulfoximide anion [Me2S(0 )N]_ have been prepared by reacting N-trimethylsilyl-dimethylsulfoximide with [(Ph3P)Au]BF4 in various molar ratios. With one or two equivalents of the gold(I) reagent only the dinuclear complex is obtained in high yield: {[(Ph3P)Au]2NS(0 )Me2}+ BF4. With three or four equivalents only the trinuclear complex is produced: {[(Ph3P)Au]...

The title crystal structure is a new triclinic polymorph of [(Ph3P)2N]Cl·(B(OH)3) or C36H30NP2 (+)·Cl(-)·BH3O3. The crystal structure of the ortho-rhom-bic polymorph was reported by [Andrews et al. (1983 ▶). Acta Cryst. C39, 880-882]. In the crystal, the [(Ph3P)2N](+) cations have no significant contacts to the chloride ions nor to the boric acid mol-ecules. This is indicated by the P-N-P angle...

BACKGROUND One of the most important resistance mechanisms in bacteria is the increased expression of multidrug efflux pumps. To combat efflux-related resistance, the development of new efflux pump inhibitors is essential. MATERIALS AND METHODS Ten phosphorus ylides were compared based on their MDR-reverting activity in multidrug efflux pump system consisting of the subunits acridine-resistan...

The syntheses of novel Pd complexes with germylene and stannylene ligands are reported. [MeN(CH2CH2NC6F5)2Sn]4Pd (2) and [MeN(CH2CPh2O)(CH2CH2O)Ge]4Pd (8) were obtained by different methods including ligand substitution in (Ph3P)4Pd or by the reaction of the free corresponding germylene or stannylene with (Ph3P)2PdCl2 or Pd(OAc)2. Crystal structures of complexes 2, 8 were determined by single c...

The 1 : 4 and 1 : 2 complexes of silver perrhenate and triphenylphosphine, [(Ph3P)4Ag](+) ReO4(-) and [(Ph3P)2AgReO4]2, have been prepared and their structures determined in the solid state by X-ray diffraction. The former is composed of independent ions, while in the latter the ions are aggregated into cyclic dimers. The silver centers are tetracoordinated including contact with two bridging p...

MeSO2CH2CN shows considerable C-H acidity at its methylene group. Through lithiation followed by reaction with (Ph3P)AuCl it can therefore be readily converted into the dinuclear, geminally substituted product MeSO2C[Au(PPh3)]2CN. With an excess of aurating reagents, a third [(Ph3P)Au] group becomes N-bonded to the nitrile unit to give an ionic trinuclear compound {MeSO2C[Au(PPh3)]2CNAu(PPh3)}+...