Secondary phosphine oxides react with vinyl sulfides (both alkyl- and aryl-substituted sulfides) under aerobic and solvent-free conditions (80 °C, air, 7-30 h) to afford 1-hydroxy-2-(organosulfanyl)ethyl(diorganyl)phosphine oxides in 70-93% yields.

Two potentially tripodal ligands, tris(1-phenyl-1H-1,2,3-triazol-4-yl)phosphine oxide (OP(1,2,3Tz1?Ph)3) and tris(1-benzyl-1H-1,2,3-triazol-4-yl)phosphine (OP(1,2,3Tz1?benz)3), were used in reactions with [Re(CO)5Br] (NEt4)2[Tc(CO)3Cl3]. While the formation of rhenium complexes bidentate tridentate coordinated phosphine oxides was observed, for technetium only cationic OP(1,2,3Tz1?R) ligands is...

Resistance to the fumigant phosphine in stored product insect pests is a global problem. Diagnosis of resistance relies on bioassay developed by FAO that involves mortality assessment after 20-h fumigation pest population at discriminating concentration gas, followed 14-day post assessment. This impractical for monitoring and early detection routine management. We utilized procedure commercial ...

Phosphine (PH3) is an important molecule in the chemistry of phosphorus (P)-bearing species interstellar medium. Interstellar PH3 thought to primarily form on icy grains, where several surface processes may occur during and after its formation. To better understand physicochemical behavior grains dense molecular clouds, we performed experimental computational studies reactions phosphine with H ...

Phosphine derivatives of alkylidyne tricobalt carbonyl clusters have been tested as catalysts/catalyst precursors in intermolecular and (asymmetric) intramolecular Pauson-Khand reactions. A number of new phosphine derivatives of the tricobalt alkylidyne clusters [Co3(micro3-CR)(CO)9] (R = H, CO2Et) were prepared and characterised. The clusters [Co3(micro3-CR)(CO)9-x(PR'3)x] (PR'3 = achiral or c...

Z. Naturforsch. 52 b, 217-220 (1997); received December 16, 1996 Gold(I) Coordination, Tris(phenylthiomethyl)phosphine, Ambidentate P/S3-Ligand The reaction of tris(phenylthiomethyl)phosphine with equimolecular amounts of [AuPPh3]+[BF4]~ affords the complex (tris(phenylthiomethyl)phosphine)(triphenylphosphine)-gold(I) tetrafluoroborate 1 in good yield. The X-ray diffraction analysis of this pro...

The efficacy of phosphine has been established for numerous major stored product insects. However, data related to the evaluation effect on Tenebrio molitor L and Alphitobius diaperinus Panzer are limited. present study aims evaluate susceptibility these species by using following protocols: (a) all life stages were exposed 3 days different concentrations phosphine, (b) adults 3000 ppm until in...

Cell-surface glycans are attractive targets for molecule imaging due to their reflection of cellular processes associated with development and disease progression. In this paper, we describe the design, synthesis, and biological application of a new phosphine probe for real-time imaging of cell-surface glycans using bioluminescence. To accomplish this goal, we took advantage of the bioorthogona...

The title complex, [Os(C(6)F(5)S)(3)Cl(C(18)H(12)F(3)P)], displays a trigonal-bipyramidal Os(IV) coordination geometry with the S atoms of three thiol-ate ligands occupying the equatorial positions. The thiol-ate penta-fluoro-phenyl substituents are all placed above the equatorial plane, forming a claw-like cavity which accommodates the chloride ligand with a normal Os-Cl bond length. The phosp...

This new method utilizes headspace-solid-phase micro extraction (HS-SPME) for pre-concentration of PH3. Phosphine was determined with gas chromatography/pulsed flame photometric detector (PFPD). Spiked samples were used for calculation of phosphine residue in grain. Four types of fibres (100μmPDMS, 85μm-CAR/PDMS, 75μm-CAR/PDMS and 65μm-PDMS/DVB) were tested. The bipolar fibres (CAR/PDMS and PDM...