81846-96-0

Basic information

• Product Name: (C₁₀H₈N₂)2OsClNO⁽²⁺⁾*2PF₆^(1-)
• Synonyms: (C₁₀H₈N₂)2OsClNO⁽²⁺⁾*2PF₆^(1-)
• CAS NO: 81846-96-0
• Molecular Weight: 857.961
• Mol File: 81846-96-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (C₁₀H₈N₂)2OsClNO⁽²⁺⁾*2PF₆^(1-)(CAS DataBase Reference)
• NIST Chemistry Reference: (C₁₀H₈N₂)2OsClNO⁽²⁺⁾*2PF₆^(1-)(81846-96-0)
• EPA Substance Registry System: (C₁₀H₈N₂)2OsClNO⁽²⁺⁾*2PF₆^(1-)(81846-96-0)

Safety Data

• Hazardous Substances Data: 81846-96-0(Hazardous Substances Data)

Upstream product

• 15702-72-4 bis(2,2'-bipyridine)osmium(II) dichloride 
• 10102-43-9 nitrogen(II) oxide 

Relevant articles and documents

Comparisons between polypyridyl nitrosyl complexes of osmium(II) and ruthenium(II)

Comparisons are made between the properties of polypyridyl nitrosyl and nitro complexes of osmium(II) and ruthenium(II) in equivalent coordination environments, e.g., [(trpy)(bpy)MNO]3+ and [(trpy)(bpy)MNO2]+ (trpy is 2,2′,2″-terpyridine; bpy is 2,2′-bipyridine). Although there are clear similarities between the two series in terms of properties and reactivities, there are also clear differences. The differences appear to arise from greater Os-NO electronic mixing and greater spin-orbit coupling at Os. Decreased electronic mixing for Ru-NO complexes leads to a more electron-deficient nitrosyl group as shown by enhanced gas-phase affinities both for e-(g) (～-0.5 V) and for O2-(g) (～-0.71 V) as estimated from solution data. Two ligand-based reductions at the nitrosyl ligand are observed by cyclic voltammetry. For the first reduction, a systematic variation occurs in potential values as the ligand cis to the NO+ group is varied through the series Cl-, NO2-, py, 1/3 trpy, PPh3, NH3, and CH3CN. E1/2 values for the first reduction increase linearly with the energy of the ν(NO) in a correlation that includes both the Ru and the Os complexes. The chemical and reactivity properties of the Os complexes are similar to those documented earlier for equivalent Ru complexes, including the following: (1) The nitrosyl and nitro complexes are in acid-base equilibrium, [(trpy)(bpy)OsIINO]3+ + 2OH- ? [(trpy)(bpy)OsIINO2]+ + H2O, for which pK = 11 at I = 1.0 M. (2) Oxidation of [(trpy)(bpy)OsIINO2]+ to [(trpy)(bpy)OsIIINO2]2+ in acetonitrile at 22.0 ± 0.1°C is followed by a disproportionate reaction at the nitro ligand, 2[(trpy)(bpy)OsIIINO2]2+ → [(trpy)(bpy)OsIINO]3+ + [(trpy)(bpy)OsIIIONO2]2+ + e-, which is second order in complex (kobsd = 366 (±58) M-1 s-1). (3) In the presence of PPh3, [(trpy)(bpy)OsIIINO2]2+ is captured by PPh3, [(trpy)(bpy)OsIIINO2]2+ + PPh3 → [(trpy)(bpy)OsIINO]2+ + OPPh3, before disproportionation can occur.