204396-51-0

Basic information

• Product Name: dichlorobis(tosylimido)tungsten(VI)
• CAS NO: 204396-51-0
• Molecular Weight: 593.164
• Mol File: 204396-51-0.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: dichlorobis(tosylimido)tungsten(VI)(CAS DataBase Reference)
• NIST Chemistry Reference: dichlorobis(tosylimido)tungsten(VI)(204396-51-0)
• EPA Substance Registry System: dichlorobis(tosylimido)tungsten(VI)(204396-51-0)

Safety Data

• Hazardous Substances Data: 204396-51-0(Hazardous Substances Data)

Upstream product

• 13283-01-7 tungsten(VI) chloride 
• 70-55-3 toluene-4-sulfonamide 
• 473-34-7 N,N-dichloro-p-toluenesulfonamide 
• 14040-11-0 tungsten hexacarbonyl 

Downstream Products

• 204396-53-2 2,2'-bipyridinedichlorobis(tosylimido)tungsten(VI) 
• 204396-60-1 W(CH₃C₆H₄SO₂N)2(Cl)2(P(CH₃)3)2 

Relevant articles and documents

Sulfinylamide metathesis and nitrene transfer at complexes of hexavalent molybdenum and tungsten

Protolysis of tungsten hexachloride with tosyl amide offers a direct access to [W(NTos)2Cl2]n (Ia). In presence of donor ligands coordination polymer 1 a can be converted into molecular complexes, e.g. [W(NTos)2Cl2(dme)] (1b), [W(NTos)2Cl2(PMe3)2] (1c) and [W(NTos)2Cl2(4,4′-Me2bipy)] (1d). The synthesis of the homologous molybdenum compound [Mo(NTos)2Cl2]n (2a) can be achieved via metathesis of [Mo(O)2Cl2]n, with sulfinyl amide Tos-NSO. An attempt to synthesize a molybdenum phosphine complex in an analogous manner as 1c, but starting from 2 a or its base adduct [Mo(NTos)2Cl2(dme)] (2b), leads to nitrene transfer to the phosphine. Me3P=NToS can be detected and the d2 molybdenum complex [Mo(NTos)Cl2(PMe3)3] (3) is isolated. 3 is characterized by a crystal structure analysis. In phosphine complex 1c, a similar nitrene abstraction is inhibited, in contrast Id is reacting with PMe3 under nitrene abstraction to yield [W(NTos)Cl2(4,4′-Me2bipy)(PMe3) 2] (4). This observation is in accord with a nitrene transfer induced via direct attack of the phosphine on the nitrogen atom of 1d.