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Gu YX, Zheng H, Li DH, Zhao X. M@C 78 (M = U, Th): Inherent Topological Connectivity Existed in Thermodynamically Stable Isomers and the Possibility of an Endohedral Fullerene Containing One Heptagon Ring. J Phys Chem A 2023. [PMID: 37463332 DOI: 10.1021/acs.jpca.3c02266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The density functional theory combined with statistical thermodynamic analyses of M@C78 (M = U and Th) demonstrated that four isomers, M@D3h(24109)-C78, M@C2v(24107)-C78, M@C1(22595)-C78, and M@C1(23349)-C78, and a nonclassical isomer, M@C1(id7)-C78, containing one heptagon ring possess outstanding thermodynamic stabilities in the two M@C78 series. Especially, the M@C1(id7)-C78 isomer is the first nonclassical C78 fullerene that can exist stably. Importantly, these five fullerene cages are found to be related in the form of Stone-Wales (SW) transformations. Geometric analyses disclosed that, unlike lanthanide metals, actinide metals are more likely to bond with sumanene-type hexagonal rings when they are encapsulated in IPR C78 cages. Frontier molecular orbital analysis showed that both U and Th atoms donate four electrons to the C78 carbon cages.
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Affiliation(s)
- Yong-Xin Gu
- School of Chemistry and Chemical Engineering, Datong University, Datong 037009, Shanxi, China
- Institute of Molecular Science & Applied Chemistry, School of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hong Zheng
- State key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - De-Huai Li
- School of Chemistry and Chemical Engineering, Datong University, Datong 037009, Shanxi, China
| | - Xiang Zhao
- Institute of Molecular Science & Applied Chemistry, School of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
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Freisetzung der Spannung kondensierter Fünfringe des Fullerenkäfigs durch chemische Funktionalisierung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901678] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Guan R, Chen M, Jin F, Yang S. Strain Release of Fused Pentagons in Fullerene Cages by Chemical Functionalization. Angew Chem Int Ed Engl 2019; 59:1048-1073. [PMID: 30884036 DOI: 10.1002/anie.201901678] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Indexed: 11/07/2022]
Abstract
According to the isolated pentagon rule (IPR), for stable fullerenes, the 12 pentagons should be isolated from one another by hexagons, otherwise the fused pentagons will result in an increase in the local steric strain of the fullerene cage. However, the successful isolation of more than 100 endohedral and exohedral fullerenes containing fused pentagons over the past 20 years has shown that strain release of fused pentagons in fullerene cages is feasible. Herein, we present a general overview on fused-pentagon-containing (i.e. non-IPR) fullerenes through an exhaustive review of all the types of fused-pentagon-containing fullerenes reported to date. We clarify how the strain of fused pentagons can be released in different manners, and provide an in-depth understanding of the role of fused pentagons in the stability, electronic properties, and chemical reactivity of fullerene cages.
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Affiliation(s)
- Runnan Guan
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
| | - Muqing Chen
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
| | - Fei Jin
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
| | - Shangfeng Yang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
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Gu YX, Li QZ, Zhao P, Zhao X. Encapsulation of Monometal Uranium into Fullerenes C 2n (2 n = 70-74): Important Ionic U 4+C 2n4- Characters and Covalent U-Cage Bonding Interactions. Inorg Chem 2019; 58:10629-10636. [PMID: 31389690 DOI: 10.1021/acs.inorgchem.8b03079] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By using density functional theory calculations combined with statistical thermodynamic analyses, the stabilization performance of a series of fullerene cages C2n (2n = 70-74) via encapsulating monometal uranium was systematically and thoroughly investigated. Results indicate that fullerene cages D5h(8149)-C70 and D3h(14246)-C74 obeying the isolated pentagon rule and C2(10612)-C72 featured with one pentalene moiety were the most promising candidates to encage uranium. Subsequent Mulliken spin density distribution and frontier molecular orbital analyses suggest that four formal electron transfer occurs from monometal U to above the carbon cages. There also exists a high degree of covalent character between the atom U and fullerenes C2n based on Mayer bond order and quantum theory of atoms in molecule (QTAIM) analyses, indicative of the cooperative stabilization by both ionic and covalent bonding interactions. In addition, investigations on the above-mentioned U@C2n isomers and other favorable candidates (U@Cs(8094)-C70, U@C1(10610)-C72, U@C1(13393)-C74, and U@C1(14049)-C74) reveal that these isomers could be closely linked via simple C2 addition and Stone-Wales transformation. These results will provide a systematic understanding on U-based endohedral metallofullerenes (EMFs) and also might be helpful for further exploration of EMF growth mechanisms.
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Affiliation(s)
- Yong-Xin Gu
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Qiao-Zhi Li
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Pei Zhao
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Xiang Zhao
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an Jiaotong University , Xi'an 710049 , China
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Slanina Z, Uhlík F, Nagase S, Akasaka T, Adamowicz L, Lu X. Eu@C 72: Computed Comparable Populations of Two Non-IPR Isomers. Molecules 2017; 22:E1053. [PMID: 28672819 PMCID: PMC6152253 DOI: 10.3390/molecules22071053] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 06/14/2017] [Accepted: 06/21/2017] [Indexed: 11/18/2022] Open
Abstract
Relative concentrations of six isomeric Eu@C 72 -one based on the IPR C 72 cage (i.e., obeying the isolated-pentagon rule, IPR), two cages with a pentagon-pentagon junction (symmetries C 2 and C 2 v ), a cage with one heptagon, a cage with two heptagons, and a cage with two pentagon-pentagon fusions-are DFT computed using the Gibbs energy in a broad temperature interval. It is shown that the two non-IPR isomers with one pentagon-pentagon junction prevail at any relevant temperature and exhibit comparable populations. The IPR-satisfying structure is disfavored by both energy and entropy.
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Affiliation(s)
- Zdeněk Slanina
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Filip Uhlík
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Albertov 6, 128 43 Praha 2, Czech Republic.
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103, Japan.
| | - Takeshi Akasaka
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Ludwik Adamowicz
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721-0041, USA.
| | - Xing Lu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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Guo YJ, Zheng H, Yang T, Nagase S, Zhao X. Theoretical Insight into the Ambiguous Endohedral Metallofullerene Er3C74: Covalent Interactions among Three Lanthanide Atoms. Inorg Chem 2015; 54:8066-76. [PMID: 26230214 DOI: 10.1021/acs.inorgchem.5b01312] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
All of C74-based endohedral metallofullerenes (EMFs) are found to be monometallofullerenes with the same D3h(14246)-C74 cage so far. An opening question is whether other C74 cages could survive during the production of some novel C74-EMFs. Theoretically, we studied the trimetallic endohedral fullerene Er3C74, the existence of which had been proven without any further characterizations. Two thermodynamically stable Er3C74 isomers were obtained, both of which could be expressed as Er3@C74, meaning that previously synthesized Er3C74 is indeed an endohedral trierbium fullerene. Besides the isomer with well-known D3h(14246)-C74 cage which obeys isolated pentagon rule (IPR), another one possesses the C1(13771)-C74 cage with two adjacent pentagons. Notably, it is the first time an endohedral metallofullerene containing the C1(13771)-C74 cage has been reported. Frontier orbitals analysis, bonding analysis in terms of quantum theory of atoms-in-molecule (QTAIM) and Mayer bond order, together with two-dimensional maps of electron localization function (ELF) and Laplacian of electron density of Er3@D3h(14246)-C74 and Er3@C1(13771)-C74 show obvious covalent interactions not only between metallic atoms and carbon cage but also among three erbium atoms. Finally, simulated IR spectra of Er3@D3h(14246)-C74 and Er3@C1(13771)-C74 were simulated, which should be useful to distinguish those two isomers.
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Affiliation(s)
| | | | - Tao Yang
- ‡Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Shigeru Nagase
- §Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103, Japan
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The role of the encapsulated atom in the vibrational spectrа of La@C60–Lu@C60 lanthanide endofullerenes. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2014.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhao YL, Zhou Q, Lian YF, Yu HT. Molecular structures of Pr@C72 and Pr@C72(C6H3Cl2): a combined experimental–theoretical investigation. RSC Adv 2015. [DOI: 10.1039/c5ra17608e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The carbon-cage structure of the lowest-lying Pr@C72 and its dichlorophenyl-functionalized derivative is C2(10612)-C72.
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Affiliation(s)
- Yan-li Zhao
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education of China) and School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- PR China
- School of Pharmacy
| | - Qin Zhou
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education of China) and School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- PR China
| | - Yong-fu Lian
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education of China) and School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- PR China
| | - Hai-tao Yu
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education of China) and School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- PR China
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