1
|
Wang Q, Abella L, Yao YR, Yan Y, Torrens D, Meng Q, Yang S, Poblet JM, Rodríguez-Fortea A, Chen N. U@ Cs(4)-C 82: A Different Cage Isomer with Reactivity Controlled by U-Sumanene Interaction. Inorg Chem 2023; 62:12976-12988. [PMID: 37527419 DOI: 10.1021/acs.inorgchem.3c01764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Actinide endohedral metallofullerenes (EMFs) are a fullerene family that possess unique actinide-carbon cage host-guest molecular and electronic structures. In this work, a novel actinide EMF, U@Cs(4)-C82, was successfully synthesized and characterized, and its chemical reactivity was investigated. Crystallographic analysis shows that U@Cs(4)-C82, a new isomer of U@C82, has a Cs(4)-C82 cage, which has never been discovered in the form of empty or endohedral fullerenes. Its unique chemical reactivities were further revealed through the Bingel-Hirsch reaction and carbene addition reaction studies. The Bingel-Hirsch reaction of U@Cs(4)-C82 shows exceptionally high selectivity and product yield, yielding only one major addition adduct. Moreover, the addition sites for both reactions are unexpectedly located on adjacent carbon atoms far away from the actinide metal, despite the nucleophilic (Bingel-Hirsch) and electrophilic (carbene addition) nature of either reactant. Density functional theory (DFT) calculations suggest that this chemical behavior, unprecedented for EMFs, is directed by the unusually strong interaction between U and the sumanene motif of the carbon cage in U@Cs(4)-C82, which makes the energy increase when it is disrupted. This work reveals remarkable chemical properties of actinide EMFs originating from their unique electronic structures and highlights the key role of actinide-cage interactions in the determination of their chemical behaviors.
Collapse
Affiliation(s)
- Qin Wang
- College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Laura Abella
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Yang-Rong Yao
- Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yingjing Yan
- College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Daniel Torrens
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Qingyu Meng
- College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| | - Shangfeng Yang
- Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Josep M Poblet
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Antonio Rodríguez-Fortea
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Ning Chen
- College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, Jiangsu, P. R. China
| |
Collapse
|
2
|
Sun J, Wang Y. How Does Spin Play with the Cycloaddition to Paramagnetic Endohedral Metallofullerenes? The Curious Case of TiSc 2N@C 80. Inorg Chem 2022; 61:19183-19192. [DOI: 10.1021/acs.inorgchem.2c02784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jing Sun
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| |
Collapse
|
3
|
Li M, Zhao R, Dang J, Zhao X. Theoretical study on the stabilities, electronic structures, and reaction and formation mechanisms of fullerenes and endohedral metallofullerenes. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
4
|
Li M, Zhao Y, Yuan K, Han Y, Zhang J, Wu Y, Ehara M, Nagase S, Zhao X. Lithium–bromine exchange reaction on C 60: first theoretical proposal of a stable singlet fullerene carbene without the heteroatom. Org Chem Front 2021. [DOI: 10.1039/d0qo01589j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A stable singlet fullerene carbene without heteroatom is firstly proposed, and two indexes are firstly suggested to estimate the occurrence of carbene insertion or addition. The interaction between LiBr and carbon atom in LiBr-compounds is explored.
Collapse
Affiliation(s)
- Mengyang Li
- Institute of Molecular Science & Applied Chemistry
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an
- China
| | - Yaoxiao Zhao
- Institute of Molecular Science & Applied Chemistry
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an
- China
| | - Kun Yuan
- College of Chemical Engineering and Technology
- Tianshui Normal University
- Tianshui
- China
| | - Yanbo Han
- Institute of Molecular Science & Applied Chemistry
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an
- China
| | - Jie Zhang
- Institute of Molecular Science & Applied Chemistry
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an
- China
| | - Yong Wu
- Institute of Molecular Science & Applied Chemistry
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an
- China
| | | | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry
- Kyoto University
- Kyoto 606-8103
- Japan
| | - Xiang Zhao
- Institute of Molecular Science & Applied Chemistry
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an
- China
| |
Collapse
|
5
|
Singh MK, Shukla P, Khatua M, Rajaraman G. A Design Criteria to Achieve Giant Ising-Type Anisotropy in Co II -Encapsulated Metallofullerenes. Chemistry 2019; 26:464-477. [PMID: 31506987 DOI: 10.1002/chem.201903618] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/05/2019] [Indexed: 11/10/2022]
Abstract
Discovery of permanent magnetisation in molecules just like in hard magnets decades ago led to the proposal of utilising these molecules for information storage devices and also as Q-bits in quantum computing. A significant breakthrough with a blocking temperature as high as 80 K has been recently reported for lanthanocene complexes. While enhancing the blocking temperature further remains one of the primary challenges, obtaining molecules that are suitable for the fabrication of the devices sets the bar very high in this area. Encouraged by the fact that our earlier predictions of potential single-molecule magnets (SMMs) in lanthanide-containing endohedral fullerenes have been verified, here we set out to undertake a comprehensive study on CoII -ion-encapsulated fullerene as potential SMMs. To study this class of molecules, we have utilised an array of theoretical methods ranging from density functional to ab initio CASSCF/NEVPT2 methods for obtaining reliable estimate of zero-field splitting parameters D and E. Additionally, we have also employed, for the first time a combination of molecular dynamics based on DFT methods coupled with CASSCF/NEVPT2 methods to seek the role of conformational isomers in the relaxation of magnetisation. Particularly, we have studied, Co@C28 , Co@C38 and Co@C48 cages and their isomers as potential target molecules that could yield substantial magnetic anisotropy. Our calculations categorically reveal a very large Ising anisotropy in this class of molecules, with Co@C48 cages predicted to yield D values as high as -127 cm-1 . Our calculations on the smaller cages reveal the free movement of CoII ion inside the cage, leading to the likely scenario of faster relaxation of magnetisation. However, larger fullerene cages were found to solve this issue. Further models with incorporating units such as {CoOZn}, {CoScZnN} inside larger fullerenes yield axial zero-field splitting values as high as -200 cm-1 with negligible E/D values. As these units represent a strong axiality coupled with a viable way to obtain air-stable low-coordinate CoII complexes, this opens up a new paradigm in the search of SMMs in this class of molecules.
Collapse
Affiliation(s)
- Mukesh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Pratima Shukla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Munmun Khatua
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| |
Collapse
|
7
|
Jin P, Yang L, Liu C, Chen M, Hou Q, Li L, Zhao Y. A comparative study on the N-heterocyclic carbene adducts of Ih-C60, D5h-C70 and Sc3N@Ih-C80. Phys Chem Chem Phys 2017; 19:17598-17606. [DOI: 10.1039/c7cp02696j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The exclusive formations of the normal nNHC-C60/70 and abnormal aNHC-Sc3N@Ih-C80 complexes in two recent experiments were suggested to be thermodynamically and kinetically controlled, respectively.
Collapse
Affiliation(s)
- Peng Jin
- Key Laboratory for New Type of Functional Materials in Hebei Province
- School of Materials Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Le Yang
- Key Laboratory for New Type of Functional Materials in Hebei Province
- School of Materials Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Chang Liu
- Key Laboratory for New Type of Functional Materials in Hebei Province
- School of Materials Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Muqing Chen
- Department of Materials Physics
- School of Physics and Mechanical & Electronical Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
| | - Qinghua Hou
- Key Laboratory for New Type of Functional Materials in Hebei Province
- School of Materials Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Lanlan Li
- Key Laboratory for New Type of Functional Materials in Hebei Province
- School of Materials Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Yujun Zhao
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Centre of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 30072
| |
Collapse
|
8
|
Zhao P, Zhao X, Ehara M. Regioselectivity of Sc2C2@C3v(8)-C82: Role of the Sumanene-Type Hexagon in Diels–Alder Reaction. J Org Chem 2016; 81:8169-74. [DOI: 10.1021/acs.joc.6b00947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pei Zhao
- Institute for Chemical Physics & Department of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, School of Science, Xi’an Jiaotong University, Xi’an 710049, China
| | - Xiang Zhao
- Institute for Chemical Physics & Department of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, School of Science, Xi’an Jiaotong University, Xi’an 710049, China
| | - Masahiro Ehara
- Institute for Molecular Science, Okazaki 444-8585, Japan
| |
Collapse
|