479067-03-3

Basic information

• Product Name: [Ir2Me(2,2-difluorovinyl)(CO)2(μ-Br)(dppm)2](CF3SO3)
• CAS NO: 479067-03-3
• Molecular Weight: 1516.29
• Mol File: 479067-03-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [Ir2Me(2,2-difluorovinyl)(CO)2(μ-Br)(dppm)2](CF3SO3)(CAS DataBase Reference)
• NIST Chemistry Reference: [Ir2Me(2,2-difluorovinyl)(CO)2(μ-Br)(dppm)2](CF3SO3)(479067-03-3)
• EPA Substance Registry System: [Ir2Me(2,2-difluorovinyl)(CO)2(μ-Br)(dppm)2](CF3SO3)(479067-03-3)

Safety Data

• Hazardous Substances Data: 479067-03-3(Hazardous Substances Data)

Upstream product

• 206441-50-1 [Ir2(CH3)(CO)(μ-CO)(dppm)2](CF3SO3) 
• 359-08-0 2-bromo-1,1-difluoroethene 

Relevant articles and documents

Binuclear fluorovinyl complexes of iridium: Transformation of an iridium-bound trifluorovinyl group into a trans-[Ir-C(F)=C(F)CH3] moiety

The fluorovinyl complexes [Ir2(CF=CF2)(CH3)(CO)2(μ-Cl)(dppm )2][CF3SO3] (2) and [Ir2-(C(H)=CF2)(CH3)(CO)2(μ-Br)(d ppm)2][CF3SO3] (3) are prepared by the oxidative addition of ClFC=CF2 and BrHC=CF2, respectively, to [Ir2(CH3)(CO)2(dppm)2] [CF3SO3] (1). Both compounds have the methyl and fluorovinyl groups on different metals essentially opposite the metal-metal bond. Protonation of 2 occurs at the Ir-Ir bond to give [Ir2(CF=CF2)(CH3)-(CO)2(μ-Cl)( μ-H)(dppm)2] [CF3SO3]2 (4). Attempts to remove the chloride ligand from 2 or to replace it with hydride or methyl groups failed. Instead, the reaction of 2 with methyllithium resulted in replacement of one fluoride substituent on the trifluorovinyl group by a methyl group to give [Ir2(CF=CFCH3)(CH3)(CO)2(μ-Cl)(dp pm)2][CF3SO3] (5). The X-ray structural determination of 5 indicates that replacement of a fluoride trans to the Ir-C2F3 bond has occurred and that migration of the resulting methyldifluorovinyl group to the metal bearing the methyl ligand has occurred. A proposal is put forth to rationalize these observations.