title: One-, two-, and three-electron reduction of a cyclic alkyl(amino)carbene-SbCl₃ adduct.
abstract: A cyclic alkyl(amino)carbene readily reacts with SbCl3 to form the corresponding Sb(III) adduct. One-electron reduction gives rise to the first example of a neutral antimony-centered radical characterized in solution. Two-electron reduction affords a Lewis base stabilized chloro-stibinidene, whereas three-electron reduction gives an antimony diatomic species capped by two carbenes. The radical has been characterized by EPR spectroscopy, while the structure of the other three species has been ascertained by single-crystal X-ray diffraction. In these four species, the formal oxidation state of the metalloid diminishes from III, to II, to I, and finally 0.
authors: UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0343 (USA) http://bertrandgroup.ucsd.edu.
authors: Robert
authors: R
authors: Kretschmer
authors: David A
authors: DA
authors: Ruiz
authors: Curtis E
authors: CE
authors: Moore
authors: Arnold L
authors: AL
authors: Rheingold
authors: Guy
authors: G
authors: Bertrand
keywords: Group 15 elements; carbenes; main-group allotropes; radicals