The Zintl ion [As7]2−: an example of an electron-deficient Asxradical anion

Sukhendu Mandal; Ran Liu; Arthur C. Reber; Meichun Qian; Héctor M. Saavedra; Xianglin Ke; Peter Schiffer; Saikat Sen; Paul S. Weiss; Shiv N. Khanna; Ayusman Sen

doi:10.1039/C0CC03219K

The Zintl ion [As₇]²⁻: an example of an electron-deficient As_xradical anion†

Sukhendu Mandal,^a Ran Liu,^a Arthur C. Reber,^b Meichun Qian,^b Héctor M. Saavedra,^a Xianglin Ke,^c Peter Schiffer,^c Saikat Sen,^d Paul S. Weiss,‡*^ac Shiv N. Khanna*^b and Ayusman Sen*^a

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* Corresponding authors

^a Department of Chemistry, The Pennsylvania State University, University Park, USA
E-mail: asen@psu.edu
Fax: +1 814-863-5319

^b Department of Physics, Virginia Commonwealth University, Richmond, USA
E-mail: snkhanna@vcu.edu
Fax: +1 804-828-7073

^c Department of Physics, The Pennsylvania State University, University Park, USA

^d Department of Organic Chemistry, Indian Institute of Science, Bangalore, India

Abstract

[K(2,2,2-crypt)]₂[As₇]·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 [As₇]²⁻. Cyclic voltammetry in DMF solution shows the As₇³⁻/As₇²⁻redox couple as a one-electron reversible process. Theoretical investigations explore the bonding and properties of compound 1.

Chemical Communications

The Zintl ion [As₇]²⁻: an example of an electron-deficient As_xradical anion†

Abstract

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The Zintl ion [As₇]²⁻: an example of an electron-deficient As_xradical anion

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