One-electron reduction of kinetically stabilized dipnictenes: synthesis of dipnictene anion radicals.
The redox behavior of kinetically stabilized dipnictenes, BbtE=EBbt [E = P, Sb, Bi; Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl], was systematically disclosed using cyclic voltammetry and theoretical calculations. It was found that they showed reversible one-electron redox couples in the reduction region. The anion radical species of the Bbt-substituted diphosphene and distibene were successfully synthesized by the reduction of the corresponding neutral dipnictenes (BbtP=PBbt and BbtSb=SbBbt). Their structures were reasonably characterized by ESR, UV-vis, and Raman spectroscopy, and the distibene anion radical was structurally characterized by X-ray crystallographic analysis.
Sasamori
Takahiro
T
Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
Mieda
Eiko
E
Nagahora
Noriyoshi
N
Sato
Kazunobu
K
Shiomi
Daisuke
D
Takui
Takeji
T
Hosoi
Yoshinobu
Y
Furukawa
Yukio
Y
Takagi
Nozomi
N
Nagase
Shigeru
S
Tokitoh
Norihiro
N