Published in
Royal Society of Chemistry, Chemical Communications, 11(47), p. 3126
DOI: 10.1039/c0cc03219k
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The Zintl ion [As7]2-: An example of an electron-deficient Asx radical anion
,
Meichun Qian,
Héctor M. Saavedra,
Xianglin Ke,
Peter Schiffer,
Saikat Sen,
Paul S. Weiss,
Shiv N. Khanna,
Ayusman Sen
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Abstract
[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.