700817-17-0

Basic information

• Product Name: (1-isopropyl-3-methyl-2,4-diphenylimidazolin-5-ylidene)dicarbonylchloroiridium
• CAS NO: 700817-17-0
• Molecular Weight: 560.075
• Mol File: 700817-17-0.mol

Chemical Properties

• CAS DataBase Reference: (1-isopropyl-3-methyl-2,4-diphenylimidazolin-5-ylidene)dicarbonylchloroiridium(CAS DataBase Reference)
• NIST Chemistry Reference: (1-isopropyl-3-methyl-2,4-diphenylimidazolin-5-ylidene)dicarbonylchloroiridium(700817-17-0)
• EPA Substance Registry System: (1-isopropyl-3-methyl-2,4-diphenylimidazolin-5-ylidene)dicarbonylchloroiridium(700817-17-0)

Safety Data

• Hazardous Substances Data: 700817-17-0(Hazardous Substances Data)

Upstream product

• 700817-09-0 (1-isopropyl-3-methyl-2,4-diphenylimidazolin-5-ylidene)[(1,2,5,6-η)-1,5-cyclooctadiene]chloroiridium 
• 201230-82-2 carbon monoxide 

Relevant articles and documents

Abnormal C5-bound N-heterocyclic carbenes: Extremely strong electron donor ligands and their iridium(I) and iridium(III) complexes

Imidazolium salts are found to bind abnormally via C5 to iridium(I) and iridium(III) to give air-stable monodentate N-heterocyclic carbene complexes. Abnormal ligand binding was verified by X-ray diffraction in both Ir(I) and Ir(III) complexes. In the case of Ir(I), it is necessary to block the C2 and C4 positions to form a stable sterically protected C5-bound complex. Infrared spectroscopy on carbonyl derivatives indicates that abnormally bound N-heterocyclic carbenes are much stronger electron donors than their ubiquitous C2-bound counterparts. The Tolman electronic parameter for 1-isopropyl-2,4- diphenyl-3-methylimidazolin-5-ylidene is 2039 cm-1, compared to ca. 2050 cm-1 for typical NHCs.