Identification of the +2 Oxidation State for Uranium in a Crystalline Molecular Complex, [K(2.2.2-Cryptand)][(CHSiMe)U].
Flash reduction of Cp′U (Cp′ = CHSiMe) in a column of potassium graphite in the presence of 2.2.2-cryptand generates crystalline [K(2.2.2-cryptand)][Cp′U], the first isolable molecular U complex. To ensure that this was not the U hydride, [K(2.2.2-cryptand)][Cp′UH], which could be crystallographical...
| Publicado en: | Journal of the American Chemical Society Vol. 135; no. 36; pp. 13310 - 13314 |
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| Autores principales: | , , , , , |
| Formato: | Artículo |
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American Chemical Society
9/11/2013
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=90490891&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 90490891 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 9/11/2013 vid: 135 iid: 36 pid: 997 pub: American Chemical Society artinfo: ui: 90490891 10.1021/ja406791t ppf: 13310 ppct: 4 formats: tig: atl: Identification of the +2 Oxidation State for Uranium in a Crystalline Molecular Complex, [K(2.2.2-Cryptand)][(CHSiMe)U]. aug: au: MacDonald, Matthew R. Fieser, Megan E. Bates, Jefferson E. Ziller, Joseph W. Furche, Filipp Evans, William J. affil: Department of Chemistry, University of California, Irvine, California 92697-2025, United States su: Uranium compounds synthesis Oxidation states Density functional theory Hydrides Cryptands Potassium compounds Graphite X-ray crystallography sug: subj: Uranium compounds synthesis Oxidation states Density functional theory Hydrides Cryptands Potassium compounds Graphite X-ray crystallography ab: Flash reduction of Cp′U (Cp′ = CHSiMe) in a column of potassium graphite in the presence of 2.2.2-cryptand generates crystalline [K(2.2.2-cryptand)][Cp′U], the first isolable molecular U complex. To ensure that this was not the U hydride, [K(2.2.2-cryptand)][Cp′UH], which could be crystallographically similar, the hydride complex was synthesized by addition of KH to Cp′U and by reduction of H by the U complex and was confirmed to be a different compound. Density functional theory calculations indicate a 5f³6d¹ quintet ground state for the [Cp′U] anion and match the observed strong transitions in its optical spectrum. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2013 holdings: @attributes: islocal: N |
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