title: Synthesis and properties of a new kinetically stabilized digermyne: new insights for a germanium analogue of an alkyne.
abstract: The reduction of an overcrowded (E)-1,2-dibromodigermene, Bbt(Br)Ge=Ge(Br)Bbt (2) [Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl], with KC8 afforded a stable digermyne, BbtGe[triple bond]GeBbt (1). The Ge[triple bond]Ge triple-bond characters of 1 were revealed by the X-ray crystallographic analysis and spectroscopic studies (UV/vis and Raman spectra) together with theoretical calculations. The Ge[triple bond]Ge bond lengths of the two nonidentical molecules of 1 observed in the unit cell were shorter than that of the previously reported digermyne, Ar'Ge[triple bond]GeAr' (Ar' = 2,6-Dip2C6H3, Dip = 2,6-diisopropylphenyl).
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Sugiyama
authors.forename: Takahiro
authors.initials: T
authors.lastname: Sasamori
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Hosoi
authors.forename: Yukio
authors.initials: Y
authors.lastname: Furukawa
authors.forename: Nozomi
authors.initials: N
authors.lastname: Takagi
authors.forename: Shigeru
authors.initials: S
authors.lastname: Nagase
authors.forename: Norihiro
authors.initials: N
authors.lastname: Tokitoh