2001 bismuth, Bi

bismuth, BiI 5400

37 - 019Bi4Te4

4+ – A Cube-Shaped, Polycationic Main Group ElementCluster. — Black crystals of Bi4Te4[AlCl4]4 are obtained from Te, Bi,TeCl4, and BiCl3 in a NaCl/AlCl3 melt (evacuated glass tube, 130 ◦C, 6 d,≈10% yield). The compound crystallizes in the tetragonal space group I4,as determined by single crystal XRD. The structure contains Bi4Te44+ andAlCl4− ions. The cations have the shape of a slightly distorted cube whosecorners are occupied alternately by Bi and Te atoms. The MO scheme of thecation cluster obtained from quantum chemical ab initio calculations is givenand discussed. — (BECK, JOHANNES; DOLG, MICHAEL; SCHLUETER,STEFAN; Angew. Chem., Int. Ed. 40 (2001) 12, 2287-2290; Inst. Anorg.Chem., Rhein. Friedrich-Wilhelms-Univ., D-53121 Bonn, Germany; EN)

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