82888-50-4

Upstream product

• 82265-64-3 syn-[5,6-dimethyl-2,3-bis(methoxycarbonyl)-7-phenyl-7-phosphanorbornadiene]pentacarbonyltungsten 
• 88000-32-2 (1,2-diphenylphosphirane)pentacarbonyltungsten 
• 260358-51-8 C₁₃H₇Cl₂O₅PW 

Downstream Products

• 111495-74-0 (CO)2(C₅H₅)WC(C₆H₅)(P(C₆H₅)W(CO)5) 
• 345226-26-8 (C₆H₅)2C₂P(W(CO)5)C₂(C₆H₅)P(W(CO)5)C₂(C₆H₅)P(C₆H₅)W(CO)5 
• 679437-92-4 [((CH₂CH₂C)4CC)P(C₆H₅)(W(CO)5)] 

Relevant academic research and scientific papers

A contribution to the direct observation of transient phosphanylidene complexes [RP=W(CO)5] (R: Me, Ph): A revisited approach to their electronic structure by UV-photoelectron spectroscopy

An original approach involving a coupling in the gas phase between flash vacuum thermolysis (FVT) and UV-photoelectron spectroscopy (UV-PES) allowed the transient terminal electrophilic phosphanylidene complex [MeP=W(CO)5] to be characterized; this is the first direct observation of this P-Me derivative. This approach also permitted the electronic structure of [PhP=W(CO)5] to be revisited and confirmed the results obtained with the methylated analogues. In contrast, [p-NC-C6H4P=W(CO) 5] proved to be too reactive to be detected under our experimental conditions. These [RP=W(CO)5] phosphanylidene complexes (R: Me, Ph) were identified by their ionization potentials, which are real fingerprints . These experimental data, supported by density functional calculations, give an overall electronic cartography of these transient species. For generation in the gas phase of these phosphanylidene complexes, the thermal degradation of two kinds of precursors were investigated. The joint experimental/theoretical approach allowed us to conclude that phosphanorbornadiene complexes are more suitable precursors than phosphirane complexes. Copyright

A contribution to the direct observation of transient phosphanylidene complexes [RP=W(CO)5] (R: Me, Ph): A revisited approach to their electronic structure by UV-photoelectron spectroscopy

An original approach involving a coupling in the gas phase between flash vacuum thermolysis (FVT) and UV-photoelectron spectroscopy (UV-PES) allowed the transient terminal electrophilic phosphanylidene complex [MeP=W(CO)5] to be characterized; this is the first direct observation of this P-Me derivative. This approach also permitted the electronic structure of [PhP=W(CO)5] to be revisited and confirmed the results obtained with the methylated analogues. In contrast, [p-NC-C6H4P=W(CO)5] proved to be too reactive to be detected under our experimental conditions. These [RP=W(CO)5] phosphanylidene complexes (R: Me, Ph) were identified by their ionization potentials, which are real fingerprints . These experimental data, supported by density functional calculations, give an overall electronic cartography of these transient species. For generation in the gas phase of these phosphanylidene complexes, the thermal degradation of two kinds of precursors were investigated. The joint experimental/theoretical approach allowed us to conclude that phosphanorbornadiene complexes are more suitable precursors than phosphirane complexes. By using an original coupling involving FVT and UV-photoelectron spectroscopy, the electronic structure of the transient electrophilic phosphanylidene complex [MeP=W(CO)5] has been described for the first time and that of [PhP=W(CO)5] has been revisited. These intermediates were generated in the gas phase and unambiguously characterized by their ionization potentials, real fingerprints .

Branched Phospha[7]triangulanes

A highly strained, thermally stable (up to 150 °C) branched phospha[7]triangulane was synthesized from the second-generation bicyclopropylidene and transient phosphinidene [Ph?P=W(CO)5], followed by demetalation in refluxing xylene. Bulkier transient CuCl?alkene-complexed phosphinidene gave 2-phosphabicyclo-[3.2.0]hept-1(5)-ene as an additional product. The "outer sphere" spirocyclopropanes provide a stabilizing factor for both of these novel compounds. Copyright

Ortho-phosphination of azobenzene by terminal phosphinidene complexes

Transient terminal phosphinidene complexes [RP → W(CO)5] (R = Ph or Me) as generated from the appropriate 7-phosphanorbornadiene precursors, insert at 110°C into the ortho-C - H bonds of azobenzene.