143714-72-1

Basic information

• Product Name: NbBr(CO)2(C₆H₅CCC₆H₅)((C₆H₅)2PCH₂CH₂P(C₆H₅)2)
• CAS NO: 143714-72-1
• Molecular Weight: 805.489
• Mol File: 143714-72-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: NbBr(CO)2(C₆H₅CCC₆H₅)((C₆H₅)2PCH₂CH₂P(C₆H₅)2)(CAS DataBase Reference)
• NIST Chemistry Reference: NbBr(CO)2(C₆H₅CCC₆H₅)((C₆H₅)2PCH₂CH₂P(C₆H₅)2)(143714-72-1)
• EPA Substance Registry System: NbBr(CO)2(C₆H₅CCC₆H₅)((C₆H₅)2PCH₂CH₂P(C₆H₅)2)(143714-72-1)

Safety Data

• Hazardous Substances Data: 143714-72-1(Hazardous Substances Data)

Upstream product

• 112713-60-7 tetracarbonyl{1,2-bis(diphenylphosphino)ethane}bromoniobium 
• 501-65-5 diphenyl acetylene 

Relevant articles and documents

New Alkyne Complexes of Niobium(I)

The reaction between the seven-co-ordinated niobium(I) complexes (dppe = Ph2PCH2CH2PPh2, X = Br or I) or (X = Cl, Br or I) and alkynes leads to the d4 niobium alkyne complexes 2-RCCR)(dppe)> (R = Ph) and 2-RCCR)(PEt3)2> (R = H, Me, Et or Ph).These complexes have been characterized by 1H, 13C, 31P and 93Nb NMR and IR spectroscopies.Low-field acetylenic proton and carbon resonances confirm the description of the alkyne as a four-electron donor.The 93Nb NMR resonance exhibit the expected dependence of shielding on the nature of the halide ligand, i.e.Cl have been determined: triclinic, space group P1, a = 9.000(1), b = 16.906(2), c= 17.952(3) Angstroem, α = 80.07(1), β = 78.59(1), γ = 75.50(1) deg.The molecule has a slightly distorted octahedral geometry with the carbonyl and the phosphine ligands in trans positions.Average distances are: Nb-CO 2.11(5), Nb-C(alkyne) 2.09(9) and Nb-I 2.91(2) Angstroem.