title: Direct observation of reduction of Cu(II) to Cu(I) by terminal alkynes.
abstract: X-ray absorption spectroscopy and in situ electron paramagnetic resonance evidence were provided for the reduction of Cu(II) to Cu(I) species by alkynes in the presence of tetramethylethylenediamine (TMEDA), in which TMEDA plays dual roles as both ligand and base. The structures of the starting Cu(II) species and the obtained Cu(I) species were determined as (TMEDA)CuCl2 and [(TMEDA)CuCl]2 dimer, respectively.
authors.affiliation: College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China.
authors.forename: Guanghui
authors.initials: G
authors.lastname: Zhang
authors.forename: Hong
authors.initials: H
authors.lastname: Yi
authors.forename: Guoting
authors.initials: G
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Deng
authors.forename: Ruopeng
authors.initials: R
authors.lastname: Bai
authors.forename: Heng
authors.initials: H
authors.lastname: Zhang
authors.forename: Jeffrey T
authors.initials: JT
authors.lastname: Miller
authors.forename: Arthur J
authors.initials: AJ
authors.lastname: Kropf
authors.forename: Emilio E
authors.initials: EE
authors.lastname: Bunel
authors.forename: Aiwen
authors.initials: A
authors.lastname: Lei