Sn12(2-): stannaspherene

Area of Science:

• Inorganic Chemistry
• Materials Science
• Nanotechnology

Background:

• The exploration of novel cluster compounds is crucial for advancing materials science.
• Understanding the bonding and structural properties of metallic clusters informs the design of new nanomaterials.

Purpose of the Study:

• To report the discovery and characterization of a stable tin cluster, termed stannaspherene.
• To investigate the electronic structure and bonding within the stannaspherene cage.
• To explore the potential of stannaspherene as a host for transition metals in nanomaterial synthesis.

Main Methods:

• Computational modeling and theoretical analysis were employed to study the Sn122- cluster.
• Analysis of bonding involved examining delocalized radial pi bonds and on-sphere sigma bonds.
• The study assessed the structural stability and internal volume of the icosahedral cage.

Main Results:

• The Sn122- cluster, stannaspherene, was identified as a highly stable and symmetric icosahedral cage.
• The cage is stabilized by four delocalized radial pi bonds and nine delocalized on-sphere sigma bonds originating from Sn 5p orbitals.
• Stannaspherene possesses a diameter of 6.1 Å and a significant internal void, capable of hosting transition metal atoms.

Conclusions:

• Stannaspherene represents a new class of stable metallic clusters with unique structural and electronic properties.
• The ability of stannaspherene to encapsulate transition metals makes it a promising endohedral building block for cluster-assembled nanomaterials.
• This discovery opens avenues for the development of advanced nanomaterials with tailored properties.