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Strobel TA, Zhu L, Guńka PA, Borstad GM, Guerette M. A Lanthanum‐Filled Carbon–Boron Clathrate. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Timothy A. Strobel
- Earth and Planets Laboratory Carnegie Institution for Science 5251 Broad Branch Rd. NW Washington DC 20015 USA
| | - Li Zhu
- Earth and Planets Laboratory Carnegie Institution for Science 5251 Broad Branch Rd. NW Washington DC 20015 USA
| | - Piotr A. Guńka
- Earth and Planets Laboratory Carnegie Institution for Science 5251 Broad Branch Rd. NW Washington DC 20015 USA
- Faculty of Chemistry Warsaw University of Technology Noakowskiego 3 00-664 Warszawa Poland
| | - Gustav M. Borstad
- Earth and Planets Laboratory Carnegie Institution for Science 5251 Broad Branch Rd. NW Washington DC 20015 USA
- Present address: Department of Physics and Materials Science University of Memphis Memphis TN 38152 USA
| | - Michael Guerette
- Earth and Planets Laboratory Carnegie Institution for Science 5251 Broad Branch Rd. NW Washington DC 20015 USA
- Present address: GE Aviation Cincinnati OH 45215 USA
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Strobel TA, Zhu L, Guńka PA, Borstad GM, Guerette M. A Lanthanum-Filled Carbon-Boron Clathrate. Angew Chem Int Ed Engl 2021; 60:2877-2881. [PMID: 33085819 DOI: 10.1002/anie.202012821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Indexed: 11/07/2022]
Abstract
We report a carbon-boron clathrate with composition 2 La@B6 C6 (LaB3 C3 ). Like recently reported SrB3 C3 ,[1] 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, La3+ [B3 C3 ]3- 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.
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Affiliation(s)
- Timothy A Strobel
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Rd. NW, Washington, DC, 20015, USA
| | - Li Zhu
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Rd. NW, Washington, DC, 20015, USA
| | - Piotr A Guńka
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Rd. NW, Washington, DC, 20015, USA.,Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warszawa, Poland
| | - Gustav M Borstad
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Rd. NW, Washington, DC, 20015, USA.,Present address: Department of Physics and Materials Science, University of Memphis, Memphis, TN, 38152, USA
| | - Michael Guerette
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Rd. NW, Washington, DC, 20015, USA.,Present address: GE Aviation, Cincinnati, OH, 45215, USA
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