N-heterocyclic carbene complexes of Rh: reaction with dioxygen without oxidation. Praetorius, J., M., Allen, D., P., Wang, R., Webb, J., D., Grein, F., Kennepohl, P., & Crudden, C., M. J. Am. Chem. Soc., 130(12):3724-5, 3, 2008.
N-heterocyclic carbene complexes of Rh: reaction with dioxygen without oxidation. [link]Website  doi  abstract   bibtex   1 download  
The reaction of oxygen with rhodium complexes containing N-heterocyclic carbenes was found to give dioxygen complexes with rare square planar geometries and unusually short O-O bond lengths. Analysis of the bonding in these complexes by Rh L-edge X-ray absorption spectroscopy (XAS), Raman spectroscopy, and DFT calculations provides evidence for a bonding model in which singlet oxygen is bound to a Rh(I) d8 metal complex, rather than the more common Rh(III) d6 peroxo species with octahedral geometry and O-O bond lengths in the 1.4-1.5 A range.
@article{
 title = {N-heterocyclic carbene complexes of Rh: reaction with dioxygen without oxidation.},
 type = {article},
 year = {2008},
 keywords = {DFT,SSRL,X-ray Absorption Spectroscopy,dioxygen complexes},
 pages = {3724-5},
 volume = {130},
 websites = {http://www.ncbi.nlm.nih.gov/pubmed/18321109},
 month = {3},
 day = {26},
 id = {9d079bdd-28c6-34cd-b6d8-14af328cc9ab},
 created = {2017-09-06T15:15:29.691Z},
 accessed = {2011-11-03},
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 profile_id = {8c5f55f8-b69e-30e2-981b-01f0d567bbfe},
 last_modified = {2017-09-06T15:23:07.881Z},
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 abstract = {The reaction of oxygen with rhodium complexes containing N-heterocyclic carbenes was found to give dioxygen complexes with rare square planar geometries and unusually short O-O bond lengths. Analysis of the bonding in these complexes by Rh L-edge X-ray absorption spectroscopy (XAS), Raman spectroscopy, and DFT calculations provides evidence for a bonding model in which singlet oxygen is bound to a Rh(I) d8 metal complex, rather than the more common Rh(III) d6 peroxo species with octahedral geometry and O-O bond lengths in the 1.4-1.5 A range.},
 bibtype = {article},
 author = {Praetorius, Jeremy M and Allen, Daryl P and Wang, Ruiyao and Webb, Jonathan D and Grein, Friedrich and Kennepohl, Pierre and Crudden, Cathleen M},
 doi = {10.1021/ja7108213},
 journal = {J. Am. Chem. Soc.},
 number = {12}
}

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