Abstract
Endohedral clusters count as molecular models for intermetallic compounds—a class of compounds in which bonding principles are scarcely understood. Herein we report soluble cluster anions with the highest charges on a single cluster to date. The clusters reflect the close analogy between intermetalloid clusters and corresponding coordination polyhedra in intermetallic compounds. We now establish Raman spectroscopy as a reliable probe to assign for the first time the presence of discrete, endohedrally filled clusters in intermetallic phases. The ternary precursor alloys with nominal compositions “K5Co1.2Ge9” and “K4Ru3Sn7” exhibit characteristic bonding modes originating from metal atoms in the center of polyhedral clusters, thus revealing that filled clusters are present in these alloys. We report also on the structural characterization of [Co@Ge9]5− (1a) and [Ru@Sn9]6− (2a) obtained from solutions of the respective alloys.
Highlights
Endohedral clusters count as molecular models for intermetallic compounds—a class of compounds in which bonding principles are scarcely understood
The clusters reflect the close analogy between intermetalloid clusters and corresponding coordination polyhedra in intermetallic compounds
We establish Raman spectroscopy as a reliable probe to assign for the first time the presence of discrete, endohedrally filled clusters in intermetallic phases
Summary
International Edition: DOI: 10.1002/anie.201907127 German Edition: DOI: 10.1002/ange.201907127 Metallocages for Metal Anions: Highly Charged [Co@Ge9]5À and [Ru@Sn9]6À Clusters Featuring Spherically Encapsulated Co1À and Ru2À Anions Benedikt J. L. Witzel, Wilhelm Klein, Jasmin V. Dums, Marina Boyko, and Thomas F. Fässler*
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have