AI Article Synopsis
- A new compound, La@B C (LaB C), has been discovered, featuring a structure similar to the recently studied SrB C, where lanthanum atoms are housed in unique cages formed by carbon and boron.
- The B-C bonds create a strong and incompressible framework for the clathrate, making it stable under pressure while exhibiting semiconductor properties with an indirect band gap around 1.3 eV.
- This structure allows for the potential substitution of different guest atoms, opening up possibilities for diverse boron-stabilized, carbon-based clathrates with varied characteristics.
Article Abstract
We report a carbon-boron clathrate with composition 2 La@B C (LaB C ). Like recently reported SrB C , single-crystal X-ray diffraction and computational modelling indicate that the isostructural La member crystallizes in the cubic bipartite sodalite structure (Type-VII clathrate) with La atoms encapsulated within truncated octahedral cages composed of alternating carbon and boron atoms. The covalent nature of the B-C bonding results in a hard, incompressible framework, and owing to the balanced electron count, La [B C ] exhibits markedly improved pressure stability and is a semiconductor with an indirect band gap predicted near 1.3 eV. A variety of different guest atoms may potentially be substituted within Type-VII clathrate cages, presenting opportunities for a large family of boron-stabilized, carbon-based clathrates with ranging physical properties.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.202012821 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!