93401-93-5

Upstream product

• 81097-61-2 fac-W(CO)3(PMTA) 
• 2071-20-7 bis-diphenylphosphinomethane 
• 93401-93-5 fac-{W(CO)3(η1-Ph2PCH2PPh2)(η2-Ph2PCH2PPh2) 
• 12128-81-3 tricarbonyl(η6-cycloheptatriene)tungsten 

Downstream Products

• 130146-71-3 {WPdCl(μ-Cl)(CO)2(μ-CO)(μ-bis(diphenylphosphino)methane)2} 
• 226945-04-6 {(CO)2W((C₆H₅)2PCH₂P(C₆H₅)2)2(CO)Rh(CO)Cl} 
• 93401-93-5 mer-W(CO)3(η1-dppm)(η2-dppm) 

Relevant academic research and scientific papers

W(CO)3(PMTA) (PMTA = MeN(CH2CH2NMe2)2) as a starting material for syntheses of W(CO)3(PR3)3, W(CO)3(η6-arene), and the protonated W(H)(CO)3(PR3)3+ complexes

A new and improved method for the synthesis of M(CO)3(PMTA) (M = W, Mo) from M(CO)6 and PMTA (MeN(CH2CH2NMe2)2) is described.The tridentate nitrogen ligand in W(CO)3(PMTA) is replaced, under relatively mild conditions, by tertiary phosphines (PMe3, PEt3, PMe2Ph, PMePh2, PhP(CH2CH2PPh2)2, CH3C(CH2PPh2)3, and Ph2P(CH2)nPPh2 where n = 1, 2) and arenes (C6H6, MeC6H5, p-Me2C6H4, C6Me6, C6H5Cl), which provides a general synthetic method for the preparation of W(CO)3(PR3)3 and W(CO)3(η6-arene) complexes.The reactions of W(CO)3(L)3 with CF3SO3H in CH2Cl2 solution yield the hydrido derivatives W(H)(CO)3(L)3+ which were characterized by their 1H and 31P NMR spectra at different temperatures.These studies show the W(H)(CO)3(L)3+ complexes to be fluxional as a result of both hydride and phosphine ligand migration.

Bimetallic Systems. Part 16. Formation of Group 6 Meta(0)-Platinum(II) Hydride Complexes, by Ring Opening of fac- or mer- (M = Cr, Mo, or W; dppm = Ph2PCH2PPh2). Reactions of

The new complexes fac- and mer- (dppm = Ph2PCH2PPh2) are described.Treatment of fac- or mer- (M = Cr, Mo, or W) with trans- gave the heterobimetallic complexes in good yields.Similarly fac- or mer- reacted with trans-CPh)(PPh3)2> to give CPh)>, but the corresponding chromium- or tungsten-platinum complexes could not be prepared.Phosphorus-31 and 1H n.m.r., and i.r. spectroscopic data are given and discussed. 1H- N.m.r. studies at different temperatures showed the complexes of type (M = Cr, Mo, or W, Y = Cl; M = Mo, Y = CCPh) to be fluxional, corresponding to inversion of the M(μ-dppm)2Pt ring and exchange of positions of the H and Y ligands: a mechanism for this inversion is suggested.The chloride ligand of was found to be readily substituted by nucleophiles Y (Y = Br, CN, N3, H, or CO) to give new heterobimetallic species.Treatment of with NaBH4 gave a heterobimetallic dihydride with a bridging and a terminal hydride. 1H- N.m.r. studies showed this dihydride to undergo bridging-to-terminal hydride exchange at +21 deg C in solution.

Ring Opening Reactions of 1-Ph2PCH2PPh2)(η2-Ph2PCH2PPh2)> M = Cr, Mo, or W with Rh or Ir Complexes to give Bimetallic Systems: Synthesis of

Complexes of the type or +PF6- have been made either as described in the title or by a ring opening reaction of 2-Ph2PCH2PPh2)2>Cl (M' = Rh or Ir) with a labile Cr, Mo, or W carbonyl derivative: the first bimetallic complex of Ph2PNHPPh2 is described.