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Updated: Jun 12, 2025

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
The ternary C@Al6Cu4 cluster: hexavalent non-hybridized carbon atoms and a new magic number
Yassin A Jeilani1, Long Van Duong2,3, Nguyen Minh Tam4
1Department of Chemistry, University of Hail, Hail, Saudi Arabia.
Abstract:
This study investigates the stability of C@Al6M4 structures, where six Al atoms surround a central carbon in octahedral C@Al6, and coinage metal M (Cu, Ag, or Au) atoms attach to the four faces of C@Al6, forming a tetrahedral shape. These structures exhibit aromaticity and significant thermodynamic stability. Their stability is compared with that of C@Al6Na4 and explained through the new magic number of 26. The separation of the 2P and 1F energy levels is attributed to this magic number. Carbon utilizes both its 2s and 2p orbitals for bonding, yet no hybridization is observed. Additionally, C@Sn62+, adhering to the new magic number of 26, is also reported in this study. The concept of "hexavalent non-hybridized carbon atom" is applied to all the abovementioned structures.
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