Issue 18, 2015

[V@Ge8As4]3− and [Nb@Ge8As6]3−: encapsulation of electron-poor transition metal atoms


[K([2.2.2]crypt)]+ salts of [V@Ge8As4]3− and [Nb@Ge8As6]3− were obtained by extraction of quaternary phases with en/[2.2.2]crypt. The V–Ge–As anion is the first Zintl anion incorporating a (formal) V5+ cation, thus the smallest cation ever embedded within a main group (semi-)metal cage. It represents the second example of a novel 12-vertex cluster architecture. The bonding situation was elucidated by quantum chemistry, also allowing for a precise assignment of Ge vs. As atoms, being indistinguishable by X-ray diffraction.

Graphical abstract: [V@Ge8As4]3− and [Nb@Ge8As6]3−: encapsulation of electron-poor transition metal atoms

Supplementary files

Article information

Article type
17 Dec 2014
28 Jan 2015
First published
29 Jan 2015
This article is Open Access
Creative Commons BY license

Chem. Commun., 2015,51, 3866-3869

[V@Ge8As4]3− and [Nb@Ge8As6]3−: encapsulation of electron-poor transition metal atoms

S. Mitzinger, L. Broeckaert, W. Massa, F. Weigend and S. Dehnen, Chem. Commun., 2015, 51, 3866 DOI: 10.1039/C4CC10086G

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