Bibliographic Details
| Title: |
Extending carbon chemistry at high-pressure by synthesis of CaC2 and Ca3C7 with deprotonated polyacene- and para-poly(indenoindene)-like nanoribbons |
| Authors: |
Saiana Khandarkhaeva, Timofey Fedotenko, Alena Aslandukova, Fariia Iasmin Akbar, Maxim Bykov, Dominique Laniel, Andrey Aslandukov, Uwe Ruschewitz, Christian Tobeck, Björn Winkler, Stella Chariton, Vitali Prakapenka, Konstantin Glazyrin, Carlotta Giacobbe, Eleanor Lawrence Bright, Maxim Belov, Natalia Dubrovinskaia, Leonid Dubrovinsky |
| Source: |
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024) |
| Publisher Information: |
Nature Portfolio, 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Science |
| Subject Terms: |
Science |
| More Details: |
Abstract Metal carbides are known to contain small carbon units similar to those found in the molecules of methane, acetylene, and allene. However, for numerous binary systems ab initio calculations predict the formation of unusual metal carbides with exotic polycarbon units, [C6] rings, and graphitic carbon sheets at high pressure (HP). Here we report the synthesis and structural characterization of a HP-CaC2 polymorph and a Ca3C7 compound featuring deprotonated polyacene-like and para-poly(indenoindene)-like nanoribbons, respectively. We also demonstrate that carbides with infinite chains of fused [C6] rings can exist even at conditions of deep planetary interiors ( ~ 140 GPa and ~3300 K). Hydrolysis of high-pressure carbides may provide a possible abiotic route to polycyclic aromatic hydrocarbons in Universe. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2041-1723 |
| Relation: |
https://doaj.org/toc/2041-1723 |
| DOI: |
10.1038/s41467-024-47138-2 |
| Access URL: |
https://doaj.org/article/b2d2cf902f2a4f538476861a23f6985a |
| Accession Number: |
edsdoj.b2d2cf902f2a4f538476861a23f6985a |
| Database: |
Directory of Open Access Journals |
