The Zintl ion [As7]2-: an example of an electron-deficient As(x) radical anion.
[K(2,2,2-crypt)](2)[As(7)]·THF, 1 (2,2,2-crypt = 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane) is the first well characterized seven-atom radical anion of group 15. UV-Vis spectroscopy confirms the presence and electronic structure of [As(7)](2-). Cyclic voltammetry in DMF solution shows the As(7)(3-)/As(7)(2-) redox couple as a one-electron reversible process. Theoretical investigations explore the bonding and properties of compound 1.
Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA.
Sukhendu
S
Mandal
Ran
R
Liu
Arthur C
AC
Reber
Meichun
M
Qian
Héctor M
HM
Saavedra
Xianglin
X
Ke
Peter
P
Schiffer
Saikat
S
Sen
Paul S
PS
Weiss
Shiv N
SN
Khanna
Ayusman
A
Sen