20540-07-2

Upstream product

• 1333-74-0 hydrogen 
• 672-66-2 Dimethyl(phenyl)phosphine 
• 47690-18-6 tetrachlorotris(dimethylphenylphosphine)tungsten(IV) 
• 22722-98-1 sodium bis(2-methoxyethoxy)aluminium dihydride 
• 16853-85-3 lithium aluminium tetrahydride 

Downstream Products

• 125566-15-6 WH(2,4,6-triisopropylthiophenolate)3(PMe₂Ph)2 
• 125566-17-8 hydridobis(dimethylphenylphosphine)tris(2,4,6-trimethylthiophenolato)tungsten(IV) 
• 84430-76-2 WH₂(NCCH₃)3(P(CH₃)2C₆H₅)3⁽²⁺⁾*2BF₄^(1-)=WH₂(NCCH₃)3(P(CH₃)2C₆H₅)3(BF₄)2 
• 90790-90-2 pentakis(tert-butyl isocyanide)bis(dimethylphenylphosphine)tungsten(II) hexafluorophosphate 
• 164411-13-6 tris(2,6-diisopropylselenophenolato)bis(dimethylphenylphosphine)hydridotungsten(IV) 
• 192221-01-5 bis(dimethylphenylphosphine)hydridotris(2,4,6-trimethylselenophenolato)tungsten(IV) 
• 929685-40-5 K⁽¹⁺⁾*(CH₂)12O₆*WH₅(P(CH₃)2C₆H₅)3^(1-)=[K(CH₂)12O₆][WH₅(P(CH₃)2C₆H₅)3] 
• 929685-42-7 K(1,10-diaza-18-crown-6)[WH₅(PMe₂Ph)3] 

Relevant academic research and scientific papers

Hydrazido(2-)-complexes as Intermediates in the Conversion of Ligating Dinitrogen into Ammonia and Hydrazine

The formation of hydrazido(2-)-complex intermediates in solution during the reaction of cis-(1-) (M=Mo or W) with H2SO4 in the tetrahydrofuran (thf) has been established by 15N n.m.r. spectroscopy and the hydrazido(2-)-complexes M(NNH2)(

Preparation of Dimolybdenum Carbonyl and Ditungsten Carbonyl Complexes containing Triple Fluoro Bridges

The reaction of with HBF4*OEt2, under an atmosphere of carbon monoxide, in tetrahydrofuran gives 2(μ-F)3>BF4.The X-ray crystal structure of this compound reveals that the geometry about each tungsten atom is best considered as having a basal plane containing three fluorine atoms, (W-F)av 2.12(1) Angstroem, with the remaining four ligands (two carbon monoxide and two phosphines) forming a second, parallel plane, in which the two carbon monoxide ligands are mutually trans, (W-C)av 1.949(6) Angstroem, as are the two phosphines, (W-P)av 2.457(1) Angstroem.The spectroscopic characteristics of 2(μ-F)3>+ are discussed and from this the nature of species formed in the reactions of (R3 = Et3 or MePh2) with HBF4*OEt2 under atmosphere of carbon monoxide can be inferred.

Selective N-N and W-N bond cleavage of tungsten pyrrolylimido complexes derived from tungsten dinitrogen complex

Treatment of the pyrrolylimido complexes cis,trans- [WX2(NNCH=CHCH=CH)(L)(PMe2Ph)2] (X = Cl, Br, I; L = PMe2Ph (6), CNBu1, CO, PhC=CH, PhCHO, Br) with LiAlH4 or KOH produced pyrrole, 1-amin

Monohydride complexes of W(IV) containing bulky selenolate ligands: X-ray crystal structure determination of [WH(SeC6H3Pri 2-2,6)3(PMe2Ph)2]

The complexes [WH(SeR)3(L)(PMe2Ph)] (R = C6H3Pri 2-2,6 or C6H2Me3-2,4,6; L = PMe2Ph, pyridine and N-methylimidazole) have been prepared by reaction of [WH6(PMe2Ph)3] or cis-[W(N2)2(PMe2Ph)4] with the selenol HSeR and characterized by FAB mass spectroscopy, 31P, 1H and 77Se NMR, IR and UV-Vis spectroscopies. A single crystal X-ray diffraction study of complex [WH(SeC6H3Pri 2-2,6)3(PMe2Ph)2] at 178 K reveals a distorted trigonal bipyramidal geometry of the WSe3P2 core with the hydride located along an Se-P edge of the trigonal bipyramid; the hydride position was refined with a W-H distance of 1.51(6) A and an H-W-P angle of 53°. This small angle results in a large 2J(H,P) coupling of 99 Hz. The bulky Se ligands adopt a 'two-up, one-down' arrangement of aryl substituents. The 2J(SeP) values show a high degree of dependence on the P-M-Se angles or the P-M-Se-C dihedral angle. This may be useful for assigning geometries of selenolate complexes. Improved syntheses of the starting compounds [WH6(PMe2Ph)3] and cis-[W(N2)2(PMe2Ph)4] are reported.

Hydrogenolysis of tetra(allyl)tungsten in the presence of tertiary phosphines: synthesis of tris(dmpm)tungsten (0)

Reaction of W(η3-C3H5)4 with PMe2Ph and Me2PCH2PMe2 (dmpm) under 1 atm of H2 in toluene at 110-120 deg C yielded WH4(PMe2Ph)4 and W(dmpm)3, respectively.Spectroscopic studies on the hydrogenolysis of W(η3-C3H5)4 in the presence of tertiary phosphines PEt3, PMePh2, and PPh3 were consistent with formation of the tungsten phosphine hydride complexes WH6(PEt3)3, WH4(PMePh2)4 and WH6(PPh3)3.W(η3-C3H5)4 has advantages over similar hydrogenolysis of WMe6 in that W(η3-C3H5)4 is considerably more thermally and air stable.Pyrolysis of WH4(PMePh2)4 at 400 deg C under a hydrogen flow yielded a shiny tungsten powder contaminated by hydrocarbon residues.Keywords: Tungsten; Phosphines; Hydrides; Hydrogenolysis; Hydrogenation

Nine-coordinate hexahydride complexes of molybdenum and tungsten

The known complex WH6(PMe2Ph)3 is prepared in 53% yield from WCl4(PMe2Ph)3 and NaH2Al(OCH2CH2OMe)2 at -80°C. It reacts with RNC (R = t-Bu) to giv

TUNGSTEN AND MOLYBDENUM PHOSPHINE HEXAHYDRIDES: THE FIRST EXAMPLES OF NINE COORDINATION AMONG MONONUCLEAR MOLYBDENUM COMPLEXES

An improved preparation and some reactions of WH6(PMe2Ph)3 are described.This method has been extended to prepare the novel MoH6(PR3)3 compounds, the first mononuclear nine-coordinate molybdenum complexes.