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Extending carbon chemistry at high-pressure by synthesis of CaC2 and Ca3C7 with deprotonated polyacene- and para-poly(indenoindene)-like nanoribbons

Author

Listed:
  • Saiana Khandarkhaeva

    (Universitätstraβe 30
    Universitätstraβe 30)

  • Timofey Fedotenko

    (Deutsches Elektronen-Synchrotron DESY)

  • Alena Aslandukova

    (Universitätstraβe 30)

  • Fariia Iasmin Akbar

    (Universitätstraβe 30)

  • Maxim Bykov

    (University of Cologne)

  • Dominique Laniel

    (Universitätstraβe 30
    University of Edinburgh)

  • Andrey Aslandukov

    (Universitätstraβe 30)

  • Uwe Ruschewitz

    (University of Cologne)

  • Christian Tobeck

    (University of Cologne)

  • Björn Winkler

    (Goethe University Frankfurt)

  • Stella Chariton

    (The University of Chicago)

  • Vitali Prakapenka

    (The University of Chicago)

  • Konstantin Glazyrin

    (Deutsches Elektronen-Synchrotron DESY)

  • Carlotta Giacobbe

    (European Synchrotron Radiation Facility)

  • Eleanor Lawrence Bright

    (European Synchrotron Radiation Facility)

  • Maxim Belov

    (Linköping University)

  • Natalia Dubrovinskaia

    (Universitätstraβe 30
    Linköping University)

  • Leonid Dubrovinsky

    (Universitätstraβe 30)

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.

Suggested Citation

  • Saiana Khandarkhaeva & Timofey Fedotenko & Alena Aslandukova & Fariia Iasmin Akbar & Maxim Bykov & Dominique Laniel & Andrey Aslandukov & Uwe Ruschewitz & Christian Tobeck & Björn Winkler & Stella Cha, 2024. "Extending carbon chemistry at high-pressure by synthesis of CaC2 and Ca3C7 with deprotonated polyacene- and para-poly(indenoindene)-like nanoribbons," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47138-2
    DOI: 10.1038/s41467-024-47138-2
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    References listed on IDEAS

    as
    1. Yan-Ling Li & Sheng-Nan Wang & Artem R. Oganov & Huiyang Gou & Jesse S. Smith & Timothy A. Strobel, 2015. "Investigation of exotic stable calcium carbides using theory and experiment," Nature Communications, Nature, vol. 6(1), pages 1-9, November.
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