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Guan XL, Sun R, Jin B, Yuan C, Wu YB. 3-D molecular stars with covalent axial bonding. J Comput Chem 2023; 44:1410-1417. [PMID: 36872591 DOI: 10.1002/jcc.27096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/13/2023] [Accepted: 02/17/2023] [Indexed: 03/07/2023]
Abstract
In designing three-dimensional (3-D) molecular stars, it is very difficult to enhance the molecular rigidity through forming the covalent bonds between the axial and equatorial groups because corresponding axial groups will generally break the delocalized π bond over equatorial frameworks and thus break their star-like arrangement. In this work, exemplified by designing the 3-D stars Be2 ©Be5 E5 + (E = Au, Cl, Br, I) with three delocalized σ bonds and delocalized π bond over the central Be2 ©Be5 moiety, we propose that the desired covalent bonding can be achieved by forming the delocalized σ bond(s) and delocalized π bond(s) simultaneously between the axial groups and equatorial framework. The covalency and rigidity of axial bonding can be demonstrated by the total Wiberg bond indices of 1.46-1.65 for axial Be atoms and ultrashort Be-Be distances of 1.834-1.841 Å, respectively. Beneficial also from the σ and π double aromaticity, these mono-cationic 3-D molecular stars are dynamically viable global energy minima with well-defined electronic structures, as reflected by wide HOMO-LUMO gaps (4.68-5.06 eV) and low electron affinities (4.70-4.82 eV), so they are the promising targets in the gas phase generation, mass-separation, and spectroscopic characterization.
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Affiliation(s)
- Xiao-Ling Guan
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, China.,Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, China
| | - Rui Sun
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, China.,Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, China
| | - Bo Jin
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, China.,Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, China
| | - Caixia Yuan
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, China.,Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, China
| | - Yan-Bo Wu
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, China.,Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, China
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Kumar A, Gadre SR, Chenxia X, Tianlv X, Kirk SR, Jenkins S. Hybrid QTAIM and electrostatic potential-based quantum topology phase diagrams for water clusters. Phys Chem Chem Phys 2015; 17:15258-73. [DOI: 10.1039/c5cp01039j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The topological diversity of sets of isomers of water clusters (W = H2O)n, 7 ≤ n ≤ 10, is analyzed employing the scalar fields of total electronic charge density ρ(r) and the molecular electrostatic potential (MESP).
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Affiliation(s)
- Anmol Kumar
- Department of Chemistry
- Indian Institute of Technology
- Kanpur 208016
- India
| | - Shridhar R. Gadre
- Department of Chemistry
- Indian Institute of Technology
- Kanpur 208016
- India
| | - Xiao Chenxia
- National and Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China)
- Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province
- College of Chemistry and Chemical Engineering
- Hunan Normal University
| | - Xu Tianlv
- National and Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China)
- Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province
- College of Chemistry and Chemical Engineering
- Hunan Normal University
| | - Steven Robert Kirk
- National and Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China)
- Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province
- College of Chemistry and Chemical Engineering
- Hunan Normal University
| | - Samantha Jenkins
- National and Local United Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China)
- Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province
- College of Chemistry and Chemical Engineering
- Hunan Normal University
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