90885-96-4

Basic information

• Product Name: W(CO)4(P(C₆H₅)2)2NiP(C₆H₅)3
• CAS NO: 90885-96-4
• Molecular Weight: 987.243
• Mol File: 90885-96-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: W(CO)4(P(C₆H₅)2)2NiP(C₆H₅)3(CAS DataBase Reference)
• NIST Chemistry Reference: W(CO)4(P(C₆H₅)2)2NiP(C₆H₅)3(90885-96-4)
• EPA Substance Registry System: W(CO)4(P(C₆H₅)2)2NiP(C₆H₅)3(90885-96-4)

Safety Data

• Hazardous Substances Data: 90885-96-4(Hazardous Substances Data)

Upstream product

• 787624-20-8 bis(triphenylphosphine)nickel(II) diiodide 
• 70505-43-0 cis-W(CO)4(PPh₂H)2 

Relevant articles and documents

Binuclear phosphido-bridged WPt, WPd, and WNi complexes. Crystal and molecular structures of (CO)4W(μ-PPh2)2Pt(PPh3) and (CO)4W(μ-PPh2)2Pt{CH3O 2CC≡CCO2CH3}

The new complexes (CO)4W(μ-PPh2)2M(PPh3) (M = Pt, 1, Pd, 2, and Ni, 3) have been prepared by reaction of Li2[W(CO)4(PPh2)2], generated in situ, with the corresponding MCl2(PPh3)2 complex. These complexes have been spectroscopically characterized with the WPt complex 1 further defined by an X-ray diffraction study. It crystallizes in the space group P21/c with a = 11.672 (2) A?, b = 18.726 (3) A?, c = 19.869 (3) A?, β = 96.08 (1)°, V = 4317 (1) A?3, and Z = 4. The structure has been refined for the 4491 reflections with (Fo) > 3σ(Fo) to R and Rw values of 0.0505 and 0.0495. The W and Pt atoms are bridged by two μ-PPh2 ligands and joined by a metal-metal bond (2.764 (1) A?). The W is further coordinated by four CO's and the Pt by a PPh3 ligand. Similar structures are indicated for 2 and 3. Complexes 1 and 2 show no appreciable reaction with H2 nor CO under moderate pressures but do react with activated alkynes to quantitatively yield (CO)4W(μ-PPh2)2M(MeO2CC≡CR) (M = Pt, R = CO2Me, 4; M = Pt, R = H, 5; M = Pd, R = CO2Me, 6) in which the alkyne has replaced the PPh3 ligand. Complex 4 crystallizes in the space group P21/n with a = 11.438 (4) A?, b = 11.095 (4) A?, c = 17.764 (6) A?, β = 95.55 (2)°, V = 3457 (2) A?3, and Z = 4. The structure refined for the 4098 reflections with (Fo) > 2.5σ(Fo) to R = 0.0431 and Rw = 0.0336. The structure is similar to that of 1 with the alkyne coordinated to Pt such that the alkyne ligand lies nearly in the plane defined by Pt and the two bridging phosphorus atoms. Details of the reaction of 1 with HBF4 and HCl are also reported.