150653-03-5

Basic information

• Product Name: mer-trichlorotris(dimethylphenylphosphine)tungsten(III)
• CAS NO: 150653-03-5
• Molecular Weight: 704.656
• Mol File: 150653-03-5.mol

Chemical Properties

• CAS DataBase Reference: mer-trichlorotris(dimethylphenylphosphine)tungsten(III)(CAS DataBase Reference)
• NIST Chemistry Reference: mer-trichlorotris(dimethylphenylphosphine)tungsten(III)(150653-03-5)
• EPA Substance Registry System: mer-trichlorotris(dimethylphenylphosphine)tungsten(III)(150653-03-5)

Safety Data

• Hazardous Substances Data: 150653-03-5(Hazardous Substances Data)

Upstream product

• 672-66-2 Dimethyl(phenyl)phosphine 
• 47690-18-6 tetrachlorotris(dimethylphenylphosphine)tungsten(IV) 
• 25731-31-1 WCl₄(PMe₂Ph)₂ 
• 30411-60-0 WCl₄(PMe₂Ph)2 
• 39049-86-0 WCl₂(P(CH₃)2C₆H₅)4 

Downstream Products

• 47690-18-6 tetrachlorotris(dimethylphenylphosphine)tungsten(IV) 
• 30411-60-0 WCl₄(PMe₂Ph)2 
• 672-66-2 Dimethyl(phenyl)phosphine 
• 135745-78-7 trichlorobis(dimethylphenylphosphine)(pyridine)tungsten(III) 
• 135745-77-6 {1,2-bis(diphenylphosphino)ethane}trichloro(dimethylphenylphosphine)tungsten(III) 

Relevant articles and documents

1,4-Bis(trimethylsilyl)-1,4-diaza-2,5-cyclohexadienes as strong salt-free reductants for generating low-valent early transition metals with electron-donating ligands

Electron-rich organosilicon compounds, such as 1,4-bis(trimethylsilyl)-1,4- diaza-2,5-cyclohexadiene (2a), 2,5-dimethyl-1,4-bis(trimethylsilyl)-1,4-diaza-2, 5-cyclohexadiene (2b), 2,3,5,6-tetramethyl-1,4-bis(trimethylsilyl)-1,4-diaza-2, 5-cyclohexadiene (

Two isomers of WCl3(PMe2Ph)3 and their potential for equilibration with W2Cl6(PMe2Ph)n

A new (comproportionation) synthesis of WCl3(PMe2Ph)3, as well as the coexistence of two structural isomers, is reported. These are characterized by 1H NMR spectroscopy and single-crystal X-ray diffraction. Equilibration of these two species is effected at 80°C, with mer converting completely to fac. It is not possible to convert the WCl3L3 (L = PMe2Ph) species to either of the known dimers W2Cl6Ln, (n = 3, 4). The mer → fac isomerization is shown to be catalyzed by WCl4L2 (but not by WCl2L4). The mechanism of the comproportionation synthesis of WCl3L3 strongly favors the mer isomer, and a mechanism is proposed to account for this. Photolysis of a mixture of [WCl3(PMe2Ph)2]2 in the presence of excess PMe2Ph completely converts the dimer to mer-WCl3(PMe2Ph)3. Mechanistic features which cause the stereoselectivity of this reaction are discussed. Cell parameters for fac-WCl3L3 (-165°C): a = 9.476(2) A?, b = 18.091 (5) A?, c = 9.185(2) A?, α = 98.62(1)°, β = 101.53(1)°, γ = 93.49(1)° with Z = 2 in space group P1. Cell parameters for mer WCl3L3 at -155°C, a = 16.031(3) A?, b = 10.297(1) A?, c = 17.913(3), β = 113.86(1)°, Z = 4, and space group P21/c.

Origin of the Two Significantly Different W-Cl Bond Lengths for Chemically Equivalent Bonds in mer-

The observation of two significantly different W-Cl bond lengths for chemically equivalent bonds, previously reported for mer-, has been reinterpreted as an artifact due to cocrystallization with an isostructural oxo impurity, cis-mer-WOCl