78970-66-8

Basic information

• Product Name: {Rh(PCy₃)2(MeCN)2H₂}PF₆
• CAS NO: 78970-66-8
• Molecular Weight: 892.858
• Mol File: 78970-66-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: {Rh(PCy₃)2(MeCN)2H₂}PF₆(CAS DataBase Reference)
• NIST Chemistry Reference: {Rh(PCy₃)2(MeCN)2H₂}PF₆(78970-66-8)
• EPA Substance Registry System: {Rh(PCy₃)2(MeCN)2H₂}PF₆(78970-66-8)

Safety Data

• Hazardous Substances Data: 78970-66-8(Hazardous Substances Data)

Upstream product

• 62793-31-1 [Rh(cyclooctadiene)2](PF₆) 
• 2622-14-2 tricyclohexylphosphine 
• 26042-63-7 silver(I) hexafluorophosphate 
• 75-05-8 acetonitrile 

Relevant articles and documents

RATES AND ACTIVATION PARAMETERS FOR SOLVENT EXCHANGE WITH (1+) (M = RhIII OR IrIII, R = CYCLOHEXYL OR PHENYL) CATIONS

Using 1H n.m.r. line-broadening and, where possible, stopped-flow Fourier-transform n.m.r., rates and activation parameters have been determined for solvent exchange with complexes of the type (1+) (M = RhIII or IrIII; R = phenyl, solvent = MeCN or Me2CO; R = cyclohexyl, solvent = MeCN) in 2H2>-dichloromethane solution.In all cases the co-ordinated solvent molecules are in trans positions with respect to the hydride ligands, and at 298 K the various complexes have rate constans for solvent exchange (k1) which differ almost by a factor of 107; k1(Rh) > k1(Ir) because for analogous species ΔH(Rh) (Ir), and the acetone solvates are much more labile than the acetonitrile complexes because of lower ΔH values.Values of ΔS are significantly positive (8-32 J K-1mol-1 when M = RhIII, 25-30 J K-1mol-1 when M= IrIII) in line with a dissociative, D mechanism.Hydrogen-1 n.m.r. spectra of (1+) and (1+) ions (L = MeOH, MeCN, pyridine, styrene, or cyclo-octene) are reported and compared.