Abstract
The [As@Ni12@AS20]3- ion was prepared from As73- and Ni(COD)2 in ethylenediamine solutions and isolated as the Bu4P+ salt (As, arsenic; Ni, nickel; COD, cyclooctadiene; Bu, butyl; P, phosphorus). The anion contains an icosahedral [Ni12(μ12-AS)]3- fragment that resides at the center of an As20 dodecahedral (fullerene) cage to give an onion-skin-like [As@Ni12@As20]3- cluster with Ih point symmetry. The icosahedron and pentagonal dodecahedron are reciprocal platonic solids, and the 32 surface atoms form a dimpled geodesic sphere composed of 60 triangular faces. In the gas phase, the [As@Ni12@As20]3- ion sequentially loses all 21 As atoms to form a series of Ni12As21-x clusters where 0 ≤ x ≤ 21, inclusively.
Original language | English |
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Pages (from-to) | 778-780 |
Number of pages | 3 |
Journal | Science |
Volume | 300 |
Issue number | 5620 |
DOIs | |
State | Published - May 2 2003 |
Externally published | Yes |