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...

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...

An industrial hygiene study was performed monitoring levels of phosphine gas workers are exposed to when applying aluminum phosphide tablets to rodent burrows. Clothing and gloves were monitored for phosphine gas from residual dust. Air in the breathing zone was monitored with short and long term monitoring equipment. No levels of phosphine exceeding the legal permissible exposure limits (PEL) ...

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...

Insecticide resistance is an escalating global issue for a wide variety of agriculturally important pests. The genetic basis and biochemical mechanisms of resistance are well characterized in some systems, but little is known about the ecological aspects of insecticide resistance. We therefore designed a laboratory experiment to quantify the progression of phosphine resistance in Tribolium cast...

Di- and triporphyrin arrays consisting of 5,15-diphenylporphyrinatomagnesium(II) (MgDPP) coordinated to free-base and Ni(II) porphyrinyl mono- and bis-phosphine oxides, as well as the self-coordinating diphenyl[10,20-diphenylporphyrinatomagnesium(II)-5-yl]phosphine oxide [MgDPP(Ph(2)PO)], were synthesised in excellent yields and characterised by various spectroscopic techniques. Phosphine oxide...

Several palladium complexes with bidentate phosphine ligands were tested for their activity in the O-allylation of phenols with allyl alcohol. The use of C3-bridged bidentate phosphine ligands results in very high selectivity for O-allylation. The reactions do not require stoichiometric amounts of additives to control the chemoselectivity. Especially, catalysts with gem-dialkyl substituted C3-b...