Observation and characterization of the smallest borospherene, B28(-) and B28
Free-standing boron nanocages or borospherenes have been observed recently for B40(-) and B40. There is evidence that a family of borospherenes may exist. However, the smallest borospherene is still not known. Here, we report experimental and computational evidence of a seashell-like borospherene ca...
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| Veröffentlicht in: | The Journal of chemical physics Jg. 144; H. 6; S. 064307 |
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| Format: | Journal Article |
| Sprache: | Englisch |
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United States
14.02.2016
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| ISSN: | 1089-7690 |
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| Abstract | Free-standing boron nanocages or borospherenes have been observed recently for B40(-) and B40. There is evidence that a family of borospherenes may exist. However, the smallest borospherene is still not known. Here, we report experimental and computational evidence of a seashell-like borospherene cage for B28(-) and B28. Photoelectron spectrum of B28(-) indicated contributions from different isomers. Theoretical calculations showed that the seashell-like B28(-) borospherene is competing for the global minimum with a planar isomer and it is shown to be present in the cluster beam, contributing to the observed photoelectron spectrum. The seashell structure is found to be the global minimum for neutral B28 and the B28(-) cage represents the smallest borospherene observed to date. It is composed of two triangular close-packed B15 sheets, interconnected via the three corners by sharing two boron atoms. The B28 borospherene was found to obey the 2(n + 1)(2) electron-counting rule for spherical aromaticity. |
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| AbstractList | Free-standing boron nanocages or borospherenes have been observed recently for B40(-) and B40. There is evidence that a family of borospherenes may exist. However, the smallest borospherene is still not known. Here, we report experimental and computational evidence of a seashell-like borospherene cage for B28(-) and B28. Photoelectron spectrum of B28(-) indicated contributions from different isomers. Theoretical calculations showed that the seashell-like B28(-) borospherene is competing for the global minimum with a planar isomer and it is shown to be present in the cluster beam, contributing to the observed photoelectron spectrum. The seashell structure is found to be the global minimum for neutral B28 and the B28(-) cage represents the smallest borospherene observed to date. It is composed of two triangular close-packed B15 sheets, interconnected via the three corners by sharing two boron atoms. The B28 borospherene was found to obey the 2(n + 1)(2) electron-counting rule for spherical aromaticity. |
| Author | Li, Jun Li, Si-Dian Wang, Lai-Sheng Zhao, Xiao-Yun Zhai, Hua-Jin Chen, Qiang Jian, Tian Wang, Ying-Jin You, Xue-Rui Zhao, Ya-Fan Ou, Ting Li, Wei-Li |
| Author_xml | – sequence: 1 givenname: Ying-Jin surname: Wang fullname: Wang, Ying-Jin organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 2 givenname: Ya-Fan surname: Zhao fullname: Zhao, Ya-Fan organization: Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China – sequence: 3 givenname: Wei-Li surname: Li fullname: Li, Wei-Li organization: Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA – sequence: 4 givenname: Tian surname: Jian fullname: Jian, Tian organization: Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA – sequence: 5 givenname: Qiang surname: Chen fullname: Chen, Qiang organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 6 givenname: Xue-Rui surname: You fullname: You, Xue-Rui organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 7 givenname: Ting surname: Ou fullname: Ou, Ting organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 8 givenname: Xiao-Yun surname: Zhao fullname: Zhao, Xiao-Yun organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 9 givenname: Hua-Jin surname: Zhai fullname: Zhai, Hua-Jin organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 10 givenname: Si-Dian surname: Li fullname: Li, Si-Dian organization: Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China – sequence: 11 givenname: Jun surname: Li fullname: Li, Jun organization: Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China – sequence: 12 givenname: Lai-Sheng surname: Wang fullname: Wang, Lai-Sheng organization: Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/26874488$$D View this record in MEDLINE/PubMed |
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| Snippet | Free-standing boron nanocages or borospherenes have been observed recently for B40(-) and B40. There is evidence that a family of borospherenes may exist.... |
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