91606-14-3

Basic information

• Product Name: cis-[IrBr(CO)(1,2-bis(diphenylphosphino)ethane)2][BF₄]2
• CAS NO: 91606-14-3
• Molecular Weight: 1270.59
• Mol File: 91606-14-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: cis-[IrBr(CO)(1,2-bis(diphenylphosphino)ethane)2][BF₄]2(CAS DataBase Reference)
• NIST Chemistry Reference: cis-[IrBr(CO)(1,2-bis(diphenylphosphino)ethane)2][BF₄]2(91606-14-3)
• EPA Substance Registry System: cis-[IrBr(CO)(1,2-bis(diphenylphosphino)ethane)2][BF₄]2(91606-14-3)

Safety Data

• Hazardous Substances Data: 91606-14-3(Hazardous Substances Data)

Upstream product

• 13826-83-0 ammonium tetrafluroborate 
• 15699-66-8 (CO)Ir((C₆H₅)2PCH₂CH₂P(C₆H₅)2)2⁽¹⁺⁾*Br^(1-)=[(CO)Ir((C₆H₅)2PCH₂CH₂P(C₆H₅)2)2]Br 

Relevant articles and documents

Oxidation of the carbonylbis(1,2-bis(dipbenylphosphino)ethane)iridium(I) cation. Preparation and characterization of a series of iridium(III) carbonyl dications

Oxidation of Ir(CO)(dppe)2+ with halogens affords cis-IrX(CO)(dppe)22+ (X = Cl, Br) while oxidation with HBF4 affords cis-IrH(CO)(dppe)22+. The species trans-IrX(CO)(dppe)22+ (X = Cl, Br) are prepared by the oxidation of Ir(CO)(dppe)2+ with nitrosonium ion in the presence of Cl- or Br-. The complex trans-IrH(CO)(dppe)22+ is most conveniently prepared by protonation of [Ir(dppe)2]BF4 with HBF4·Et2O to afford the intermediate IrH(dppe)22+, followed by CO addition. In contrast, both cis- and trans-IrCl(CO)(dppe)22+ species are formed by the electrochemical oxidation of Ir(CO)(dppe)2+ in chloride media. The trans isomer is reduced at a more negative potential and is thus thermodynamically the more stable. Reversible deprotonation of cis-[IrH(CO)(dppe)2][BF4]2 by chloride implies that the acidity of this compound is of the order of that of HCl, unusually strong for a third-row transition-metal hydrido complex.