title: Synthesis and structure of a bis-N-heterocyclic carbene complex of uranium tetrachloride exhibiting short ClC(carbene) contacts.
abstract: Treatment of UCl(4) with one or two equivalents of IPr [IPr = {C(NArCH)(2)}, Ar = 2,6-diisopropylphenyl] gives [UCl(4)(IPr)(2)] as the sole isolable uranium-containing containing product; an X-ray diffraction study showed close Cl...C(carbene) contacts, but DFT analysis suggests the contacts are the result of aryl chloride steric repulsions as the Cl...C orbital interaction is negligible.
authors.affiliation: School of Chemistry, University of Nottingham, University Park, Nottingham, UKNG7 2RD.
authors.forename: Benedict M
authors.initials: BM
authors.lastname: Gardner
authors.forename: Jonathan
authors.initials: J
authors.lastname: McMaster
authors.forename: Stephen T
authors.initials: ST
authors.lastname: Liddle
mesh_terms: D002712:Chlorides / Q000737:chemistry*; D006571:Heterocyclic Compounds / Q000737:chemistry*; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D014501:Uranium / Q000737:chemistry*
chemical_list: D002712:Chlorides; D006571:Heterocyclic Compounds; D009942:Organometallic Compounds; C030011:carbene; D014501:Uranium; D008697:Methane