249574-16-1

Basic information

• Product Name: (η(5):η(5)-fulvalene)W2(CO)4(methyldiphenylphosphine)2(S-i-Pr)2
• CAS NO: 249574-16-1
• Molecular Weight: 1158.66
• Mol File: 249574-16-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (η(5):η(5)-fulvalene)W2(CO)4(methyldiphenylphosphine)2(S-i-Pr)2(CAS DataBase Reference)
• NIST Chemistry Reference: (η(5):η(5)-fulvalene)W2(CO)4(methyldiphenylphosphine)2(S-i-Pr)2(249574-16-1)
• EPA Substance Registry System: (η(5):η(5)-fulvalene)W2(CO)4(methyldiphenylphosphine)2(S-i-Pr)2(249574-16-1)

Safety Data

• Hazardous Substances Data: 249574-16-1(Hazardous Substances Data)

Upstream product

• 245730-36-3 (η(5);η(5)-fulvalene)W2(CO)4(P(C6H5)2CH3)2H2 
• 917-54-4 methyllithium 

Relevant articles and documents

Synthesis and characterization of FvW2(CO)4L2(SR)2 (L=CO, PPh2Me; R=H, i-Pr, CH2Ph, Ph) type (fulvalene)tungsten dihydrosulfides and dithiolates

A direct, high-yield synthesis of (Et4N)2[FvW2(CO)6], where Fv=η5:η5-C10H8 (fulvalene), from W(CO)3(EtCN)3, Li2[C10H8], and Et4NBr is reported. It reacted with sulfur-transfer reagents, RSphthalimide (R=i-Pr, CH2Ph, Ph), to give the corresponding dithiolato complexes, FvW2(CO)6(SR)2. Treating the thiolato complexes, where R=i-Pr, CH2Ph, with CS2 gave thioxanthate derivatives FvW2(CO)4(S2CSR)2, via mixed RSW(CO)3(μ-Fv)(CO)2WS2CSR intermediates. The unstable bishydrosulfido complex FvW2(CO)6(SH)2 was obtained from FvW2(CO)6H2 and S8 via the mixed hydrido-hydrosulfido intermediate FvW2(CO)6(SH)H. FvW2(CO)6H2 also reacted with PPh2Me to give the ligand-substituted product FvW2(CO)4(PPh2Me)2H2, which provided access to the dianion Li2[FvW2(CO)4(PPh2Me)2] via methyllithium reduction. Similarly to its parent compound, [FvW2(CO)4(PPh2Me)2]2- also gave the corresponding dithiolato complexes, FvW2(CO)4(PPh2Me)2(SR)2 (R=i-Pr, CH2Ph, Ph), upon treatment with RSphthalimide. FvW2(CO)4(PPh2Me)2(SPh)2 was converted into FvW2(CO)4(PPh2Me)2(SH)2 under an atmosphere of H2S. All PPh2Me-substituted dithiolato complexes as well as the bishydrosulfide derivative exist in solution as an equilibrium mixture of D,L- and meso-cis,cis, cis,trans and trans,trans isomers. However, only the cis,cis isomer of the bishydrosulfido complex was present in the crystalline state.