title: Dispersion-Force-Assisted Disproportionation: A Stable Two-Coordinate Copper(II) Complex.
abstract: The synthesis of the first linear coordinated Cu(II) complex Cu{N(SiMe3 )Dipp}2 (1 Dipp=C6 H5 -2,6Pr(i) 2 ) and its Cu(I) counterpart [Cu{N(SiMe3 )Dipp}2 ](-) (2) is described. The formation of 1 proceeds through a dispersion force-driven disproportionation, and is the reaction product of a Cu(I) halide and LiN(SiMe3 )Dipp in a non-donor solvent. The synthesis of 2 is accomplished by preventing the disproportionation into 1 by using the complexing agent 15-crown-5. EPR spectroscopy of 1 provides the first detailed study of a two-coordinate transition-metal complex indicating strong covalency in the Cu-N bonds.
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: Clifton L
authors.initials: CL
authors.lastname: Wagner
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: Lizhi
authors.initials: L
authors.lastname: Tao
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: Emily J
authors.initials: EJ
authors.lastname: Thompson
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: Troy A
authors.initials: TA
authors.lastname: Stich
authors.affiliation: Fukui Institute for Fundamental Chemistry, Kyoto University, Takano Nishi-Hiraki-cho, 34-4, Sakyo-ku, Kyoto, 606-8103, Japan.
authors.forename: Jingdong
authors.initials: J
authors.lastname: Guo
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: James C
authors.initials: JC
authors.lastname: Fettinger
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: Louise A
authors.initials: LA
authors.lastname: Berben
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA.
authors.forename: R David
authors.initials: RD
authors.lastname: Britt
authors.affiliation: Fukui Institute for Fundamental Chemistry, Kyoto University, Takano Nishi-Hiraki-cho, 34-4, Sakyo-ku, Kyoto, 606-8103, Japan.
authors.forename: Shigeru
authors.initials: S
authors.lastname: Nagase
authors.affiliation: Department of Chemistry, University of California, Davis, One Shield Avenue, Davis, CA, 95616, USA. pppower@ucdavis.edu.
authors.forename: Philip P
authors.initials: PP
authors.lastname: Power
keywords: EPR spectroscopy; copper; dispersion effects; disproportionation; silylamide