205999-28-6

Basic information

• Product Name: (CO)5W(CH₃OC₆H₄)(C₆H₅)P(CH₃)
• CAS NO: 205999-28-6
• Molecular Weight: 554.148
• Mol File: 205999-28-6.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: (CO)5W(CH₃OC₆H₄)(C₆H₅)P(CH₃)(CAS DataBase Reference)
• NIST Chemistry Reference: (CO)5W(CH₃OC₆H₄)(C₆H₅)P(CH₃)(205999-28-6)
• EPA Substance Registry System: (CO)5W(CH₃OC₆H₄)(C₆H₅)P(CH₃)(205999-28-6)

Safety Data

• Hazardous Substances Data: 205999-28-6(Hazardous Substances Data)

Upstream product

• 36477-75-5 tungsten pentacarbonyl tetrahydrofuran 
• 917-54-4 methyllithium 
• 92573-07-4 (2-methoxyphenyl)(phenyl)phosphine chloride 
• 31082-68-5 piperazinepentacarbonyltungsten 

Relevant articles and documents

Configurational stability of chlorophosphines

The configurational stability of chlorophosphines is investigated. Several mechanisms involving chlorophosphine monomer, dimers, and adducts with HCl are evaluated by density functional theory calculations. The presence of HCl in the medium is found to catalyze the P-center chiral inversion at room temperature. The reaction involves a two-step mechanism with low transition states (10 kcal·mol-1) and a stabilized achiral intermediate (-2.6 kcal·mol-1). Further calculations and experiments on the halogen exchange with HBr corroborate this mechanism, with bromophosphines being formed instantaneously. Finally, to avoid the racemization, the borane is found to be a very promising protecting group for the configurational stability of the P-chirogenic chlorophosphines.