Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials
Name
eaay8361.full.pdf
Description
Published version
Size
791.25 KB
Format
Adobe PDF
Checksum (MD5)
becc216385d7cae7c962e797178d2ed5
Author(s)
Cohen, Ronald E.
Date Issued
January 2020
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Zhu, Li et al. “Carbon-boron clathrates as a new class of sp3-bonded framework materials.” Science Advances 6 (2020): eaay8361 © 2020 The Author(s)
Version
Final published version
Abstract
Carbon-based frameworks composed of sp3 bonding represent a class of extremely lightweight strong materials, but only diamond and a handful of other compounds exist despite numerous predictions. Thus, there remains a large gap between the number of plausible structures predicted and those synthesized. We used a chemical design principle based on boron substitution to predict and synthesize a three-dimensional carbon-boron framework in a host/guest clathrate structure. The clathrate, with composition 2Sr@B6C6, exhibits the cubic bipartite sodalite structure (type VII clathrate) composed of sp3-bonded truncated octahedral C12B12 host cages that trap Sr2+ guest cations. The clathrate not only maintains the robust nature of diamond-like sp3 bonding but also offers potential for a broad range of compounds with tunable properties through substitution of guest atoms within the cages.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution NonCommercial License 4.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.aay8361
