Composite Icosahedron/Cube Endohedral Clusters in Rh2Cd15

Weiwei Xie, Minhao Liu, Zhijun Wang, Nai Phuan Ong, Robert J. Cava

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We present Rh2Cd15, the first binary compound in the Rh-Cd system. It is based on transition-metal-embedded (Rh@Cd11 and Rh@Cd12) endohedral Cd clusters that are single- and double-capped IC10 composite icosahedra/cubes. We demonstrate the structural connections between the clusters. On the basis of the analysis of atomic interactions and electron counting, 50 electrons per Rh2Cd15 is postulated to be the boundary between bonding and antibonding interactions. This understanding is supported by electronic structure calculations showing that the electron count for Rh2Cd15 (48 electrons per Rh2Cd15) is located close to a deep pseudogap in the electronic density of states at 50 electrons per formula unit, which we postulate is an important factor in determining the new compound's stability.

Original languageEnglish (US)
Pages (from-to)7605-7609
Number of pages5
JournalInorganic Chemistry
Volume55
Issue number15
DOIs
StatePublished - Aug 1 2016

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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