title: Synthesis of a Carbodicyclopropenylidene: A Carbodicarbene based Solely on Carbon.
abstract: The first carbodicarbene stabilized by flanking cyclopropenylidenes is reported. Tetraphenylcarbodicyclopropenylidene (2) is accessed by deprotonation of the corresponding triafulvene cyclopropenium salt, and has been spectroscopically characterized in [D8 ]THF solution at -60 °C. Main-group and transition-metal complexes of 2 have been accessed, and have revealed the high sigma donating ability, and exclusive η(1) binding of this neutral all carbon ligand. Variable temperature NMR spectroscopy studies reveal varying degrees of free rotation in the flanking cyclopropenylidene groups of 2 in its coordination compounds.
authors.affiliation: Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada.
authors.forename: Conor
authors.initials: C
authors.lastname: Pranckevicius
authors.affiliation: Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, 92093-0343, USA.
authors.forename: Liu Leo
authors.initials: LL
authors.lastname: Liu
authors.affiliation: Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, 92093-0343, USA.
authors.forename: Guy
authors.initials: G
authors.lastname: Bertrand
authors.affiliation: Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada. dstephan@chem.utoronto.ca.
authors.forename: Douglas W
authors.identifier: 0000-0001-8140-8355
authors.initials: DW
authors.lastname: Stephan
keywords: bent allenes; carbodicarbenes; carbon donors; carbones; gold complexes