1075281-42-3

Basic information

• Product Name: [IrH₂(PPh₃)2(N-(4-nitrophenyl)picolinamide(-1H))]
• CAS NO: 1075281-42-3
• Molecular Weight: 961.031
• Mol File: 1075281-42-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [IrH₂(PPh₃)2(N-(4-nitrophenyl)picolinamide(-1H))](CAS DataBase Reference)
• NIST Chemistry Reference: [IrH₂(PPh₃)2(N-(4-nitrophenyl)picolinamide(-1H))](1075281-42-3)
• EPA Substance Registry System: [IrH₂(PPh₃)2(N-(4-nitrophenyl)picolinamide(-1H))](1075281-42-3)

Safety Data

• Hazardous Substances Data: 1075281-42-3(Hazardous Substances Data)

Upstream product

• 16070-58-9 tris(triphenylphosphine)chloroiridium 
• 61349-99-3 pyridine-2-carboxylic acid (4-nitro-phenyl)amide 

Relevant articles and documents

Interaction of N-(aryl)picolinamides with iridium. N-H and C-H bond activations

Reaction of N-(4-R-phenyl)picolinamide (R = OCH3, CH3, H, Cl and NO2) with [Ir(PPh3)3Cl] in refluxing ethanol in the presence of a base (NEt3) affords two yellow complexes (1-R and 2-R). The 1-R complexes contain an amide ligand coordinated to the metal center as a monoanionic bidentate N,N donor along with two triphenylphosphines, a chloride and a hydride. The 2-R complexes contain an amide ligand coordinated to the metal center as a monoanionic bidentate N,N donor along with two triphenylphosphines and two hydrides. Similar reaction of N-(naphthyl)picolinamide with [Ir(PPh3)3Cl] affords two organometallic complexes, 3 and 4. In complex 3 the amide ligand is coordinated to the metal center, via C-H activation of the naphthyl ring at the 8-position, as a dianionic tridentate N,N,C donor, along with two triphenylphosphines and one chloride. Complex 4 is similar to complex 3, except a hydride is bonded to iridium instead of the chloride. Structures of the 1-OCH3, 2-Cl and 4 complexes have been determined by X-ray crystallography. All the complexes are diamagnetic, and show characteristic 1H NMR signals and intense MLCT transitions in the visible region. Cyclic voltammetry on all the complexes shows a IrIII-IrIV oxidation within 0.50-1.16 V vs. SCE and a reduction of the coordinated amide ligand within -1.02 to -1.25 V vs. SCE.