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. 2019 Feb 27;9:2907. doi: 10.1038/s41598-019-39524-4

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Visualization of the HOMO (left-hand side) and LUMO (right-hand side) for the ground state of Möbius 13-cyclacene (top)/Möbius 14-cyclacene (middle)/Möbius 15-cyclacene (bottom), obtained with spin-restricted TAO-LDA. Here, the isovalue is 0.03 e/Å³, and the occupation numbers of HOMOs and LUMOs are shown in parentheses.