The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Abnormal C5-Bound N-Heterocyclic Carbenes: Extremely Strong Electron Donor Ligands and Their Iridium(I) and Iridium(III) Complexes
Abstract
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.
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Cites
Steric effects of phosphorus ligands in organometallic chemistry and homogeneous catalysis
Tolman, C. A. (1977) · Chemical Reviews · doi:10.1021/cr60307a002 · Cited by 4,824
1,3-Dimethyl-4-imidazolinyliden-(2)-pentacarbonylchrom ein neuer übergangsmetall-carben-komplex
Öfele, K. (1968) · Journal of Organometallic Chemistry · doi:10.1016/s0022-328x(00)88691-x · Cited by 878
Rhodium and Iridium Complexes of N-Heterocyclic Carbenes via Transmetalation: Structure and Dynamics
Chianese, A. R., Li, X., Janzen, M. C., Faller, J. W., & Crabtree, R. H. (2003) · Organometallics · doi:10.1021/om021029+ · Cited by 516
Self-citationNew Catalyst Systems for the Catalytic Conversion of Methane into Methanol
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A Study of the Ionic Liquid Mediated Microwave Heating of Organic Solvents
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Cited by
Heterocyclic Carbenes: Synthesis and Coordination Chemistry
Hahn, F. E., & Jahnke, M. C. (2008) · Angewandte Chemie International Edition · doi:10.1002/anie.200703883 · Cited by 2,775
Díez-González, S., & Nolan, S. P. (2007) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2006.10.004 · Cited by 939
Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments
Melaimi, M., Jazzar, R., Soleilhavoup, M., & Bertrand, G. (2017) · Angewandte Chemie International Edition · doi:10.1002/anie.201702148 · Cited by 788
Metadata
- Authors
- Chianese, A. R., Kovacevic, A., Zeglis, B. M., Faller, J. W., & Crabtree, R. H.
- Venue
- Organometallics
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-04-15
- Volume
- 23
- Issue
- 10
- Pages
- 2461-2468
- ISSN
- 0276-7333 (ISSN-L)
- 1520-6041
- OpenAlex
- W2011851250
- Cited by
- 329
- References
- 10
- FWCI
- 12.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chianese, A. R., Kovacevic, A., Zeglis, B. M., Faller, J. W., & Crabtree, R. H. (2004). Abnormal C5-Bound N-Heterocyclic Carbenes: Extremely Strong Electron Donor Ligands and Their Iridium(I) and Iridium(III) Complexes. Organometallics. https://doi.org/10.1021/om049903h
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