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Planar hexagonal B36 as a potential basis for extended single-atom layer boron sheets

Author

Listed:
  • Zachary A. Piazza

    (Brown University)

  • Han-Shi Hu

    (Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University)

  • Wei-Li Li

    (Brown University)

  • Ya-Fan Zhao

    (Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University)

  • Jun Li

    (Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University)

  • Lai-Sheng Wang

    (Brown University)

Abstract

Boron is carbon’s neighbour in the periodic table and has similar valence orbitals. However, boron cannot form graphene-like structures with a honeycomb hexagonal framework because of its electron deficiency. Computational studies suggest that extended boron sheets with partially filled hexagonal holes are stable; however, there has been no experimental evidence for such atom-thin boron nanostructures. Here, we show experimentally and theoretically that B36 is a highly stable quasiplanar boron cluster with a central hexagonal hole, providing the first experimental evidence that single-atom layer boron sheets with hexagonal vacancies are potentially viable. Photoelectron spectroscopy of B36− reveals a relatively simple spectrum, suggesting a symmetric cluster. Global minimum searches for B36− lead to a quasiplanar structure with a central hexagonal hole. Neutral B36 is the smallest boron cluster to have sixfold symmetry and a perfect hexagonal vacancy, and it can be viewed as a potential basis for extended two-dimensional boron sheets.

Suggested Citation

  • Zachary A. Piazza & Han-Shi Hu & Wei-Li Li & Ya-Fan Zhao & Jun Li & Lai-Sheng Wang, 2014. "Planar hexagonal B36 as a potential basis for extended single-atom layer boron sheets," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4113
    DOI: 10.1038/ncomms4113
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    Cited by:

    1. Tetsuya Kambe & Shotaro Imaoka & Misa Shimizu & Reina Hosono & Dongwan Yan & Hinayo Taya & Masahiro Katakura & Hirona Nakamura & Shoichi Kubo & Atsushi Shishido & Kimihisa Yamamoto, 2022. "Liquid crystalline 2D borophene oxide for inorganic optical devices," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    2. Lu Qiu & Xiuyun Zhang & Xiao Kong & Izaac Mitchell & Tianying Yan & Sung Youb Kim & Boris I. Yakobson & Feng Ding, 2023. "Theory of sigma bond resonance in flat boron materials," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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