77983-52-9

Basic information

• Product Name: [W2(μ-N2CHN2)(1,2-bis(diphenylphosphino)ethane)4Br2]Br*3CH2Cl2
• CAS NO: 77983-52-9
• Molecular Weight: 2524.95
• Mol File: 77983-52-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [W2(μ-N2CHN2)(1,2-bis(diphenylphosphino)ethane)4Br2]Br*3CH2Cl2(CAS DataBase Reference)
• NIST Chemistry Reference: [W2(μ-N2CHN2)(1,2-bis(diphenylphosphino)ethane)4Br2]Br*3CH2Cl2(77983-52-9)
• EPA Substance Registry System: [W2(μ-N2CHN2)(1,2-bis(diphenylphosphino)ethane)4Br2]Br*3CH2Cl2(77983-52-9)

Safety Data

• Hazardous Substances Data: 77983-52-9(Hazardous Substances Data)

Upstream product

• 1868-53-7 dibromofluoromethane 
• 1483-73-4 diphenyliodonium bromide 

Downstream Products

• 77983-53-0 [(WBr(1,2-bis(diphenylphosphine)ethane)2)2(μ-CH(N2)2)](1+)*PF6(1-) 

Relevant articles and documents

Synthesis and X-ray crystal structure of [W2(μ-N2CHN2) (dppe)4Br2]+[Cr(NH3) 2(NCS)4]-.1/3CH2Cl 2: A complex containing the bridging formazanido(3-) ligand

The reaction between CHFBr2 and the dinitrogen-derived hydrazido(2-) complex [WBr(dppe)2N2H2]+Br-, in the presence of [Ph2I]+Br- and aqueous base, yields a cationic, binuclear complex [W2(μ-N2CHN2)(dppe)4Br 2]+. This complex has been isolated as its bromide, hexafluorophosphate, and Reineckate salts, and a single-crystal X-ray study of the latter confirms that the cation contains a formazanido(3-) ligand, [N2CHN2]3-, bridging two tungsten atoms in a seven-atom chain. Crystals of [[W2(μ-N2CHN2)(dppe)4Br 2]+[Cr(NH3)2(NCS)4] -.1/3CH2Cl2] are monoclinic, space group P21/n, with Z = 4, a = 19.089 (3) A?, b = 44.263 (4) A?, c = 13.807 (2) A?, β = 104.4 (1)°, and V = 11299.5 A?3. The structure was refined by blocked full-matrix least squares, with the phenyl rings treated as rigid bodies, to a final R value of 0.082 and Rw of 0.083 for the 5918 unique observed reflections [I > 3σ(I)].