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MacLeod-Carey D, Rodríguez-Kessler PL, Muñoz-Castro A. Cl@Si 20X 20 cages: evaluation of encapsulation nature, structural rigidity, and 29Si-NMR patterns using relativistic DFT calculations. Phys Chem Chem Phys 2023. [PMID: 37455622 DOI: 10.1039/d3cp02371k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
The experimental characterization of Cl@Si20 endohedral clusters, featuring different ligands such as [Cl@Si20H20]- (1) [Cl@Si20H12Cl8]- (2), and [Cl@Si20Cl20]- (3), provides insight into the variable encapsulation environment for chloride anions. The favorable formation of such species enables the evaluation of the encapsulation nature and the role of the inner anion in the rigidity of the overall cluster. Our results show a sizable interaction which increases as -66.7, -100.8, and -130.3 kcal mol-1 from 1 to 3, respectively, featuring electrostatic character. The orbital interaction involves 3p-Cl → Si20X20 and 3s-Cl → Si20X20 charge transfer channels and a slight contribution from London dispersion-type interactions. These results show that the inner bonding environment can be modified by the choice of exobonded ligands. Moreover, 29Si-NMR parameters are depicted in terms of the chemical shift anisotropy (CSA), leading to a strong variation of the three principal tensor components (δ11, δ22, δ33), unraveling the origin of the experimental 29Si-NMR chemical shift (δiso) differences along the given series. Thus, the Si20 cage is a useful template to further evaluate different environments for encapsulating atomic species.
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Affiliation(s)
- Desmond MacLeod-Carey
- Laboratorio de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autónoma de Chile, Llano Subercaceaux 2801, San Miguel, Santiago, Chile.
| | - Peter L Rodríguez-Kessler
- Centro de Investigaciones en Óptica A.C. (CIO), Loma del Bosque 115, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico.
| | - Alvaro Muñoz-Castro
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Bellavista 7, Santiago, 8420524, Chile.
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Lingas R, Charistos ND, Muñoz-Castro A. Local and global aromaticity under rotation: analysis of two- and three-dimensional representative carbon nanostructures. Phys Chem Chem Phys 2023; 25:14285-14293. [PMID: 37183443 DOI: 10.1039/d3cp00569k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Nanoscaled 2D and 3D carbon structures with closed curved π-surfaces are of relevance in the development of desirable building units for materials science. Such species are able to sustain local and global aromatic circuits involving isolated regions or the overall structural backbone, respectively. Here we account for local and global aromaticity under rotation of representative two- and three-dimensional species involving para-connected and fused edge-sharing phenyl rings ([8]CPP, [10]CPP, CNB), and C60 fullerene at different charge states. Our results denote that nanoscaled 2D global aromatics mimic the behaviour of the most prototypical aromatic 6π-circuit, given by benzene, where the shielding cone properties vary along the rotation motion. In contrast, 3D spherical aromatics remain almost invariant under rotation, given the distinctive characteristics of such species, differing from 2D global aromatics. Dissection of orbital contributions reveals that π-orbitals are determinants for shifting from non-aromatic to spherical aromatic species. Under rotation, the variation of the anisotropic effect inherent to such nanoscaled structures is accounted for, which is relevant to rationalize variation in NMR signal shifts upon the formation of host-guest aggregates.
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Affiliation(s)
- Rafael Lingas
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Quantum and Computational Chemistry, Thessaloniki, 54 124, Greece.
| | - Nickolas D Charistos
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Quantum and Computational Chemistry, Thessaloniki, 54 124, Greece.
| | - Alvaro Muñoz-Castro
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Bellavista 7, Santiago, 8420524, Chile.
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Affiliation(s)
- Jijun Zhao
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Qiuying Du
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Si Zhou
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Vijay Kumar
- Center for Informatics, School of Natural Sciences, Shiv Nadar University, NH-91, Tehsil Dadri, Gautam Buddha Nagar 201314, U. P., India
- Dr. Vijay Kumar Foundation, 1969 Sector 4, Gurgaon 122001, Haryana, India
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Li A, Wang Y, Downing DO, Chen F, Zavalij P, Muñoz‐Castro A, Eichhorn BW. Endohedral Plumbaspherenes of the Group 9 Metals: Synthesis, Structure and Properties of the [M@Pb
12
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3−
(M=Co, Rh, Ir) Ions. Chemistry 2020; 26:5824-5833. [DOI: 10.1002/chem.201905451] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Ai‐Min Li
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Yi Wang
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Domonique O. Downing
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Fu Chen
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Peter Zavalij
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Alvaro Muñoz‐Castro
- Grupo de Química Inorgánica y Materiales Moleculares Facultad de Ingeniería Universidad Autonoma de Chile El Llano Subercaseaux 2801 Santiago Chile
| | - Bryan W. Eichhorn
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
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Narayanan R, Nakada M, Abe M, Saito M, Hada M. 13C and 207Pb NMR Chemical Shifts of Dirhodio- and Dilithioplumbole Complexes: A Quantum Chemical Assessment. Inorg Chem 2019; 58:14708-14719. [DOI: 10.1021/acs.inorgchem.9b02367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Radhika Narayanan
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Marisa Nakada
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama, Saitama City 338-8570, Japan
| | - Minori Abe
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Masaichi Saito
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama, Saitama City 338-8570, Japan
| | - Masahiko Hada
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Paschoal D, Guerra CF, de Oliveira MAL, Ramalho TC, Dos Santos HF. Predicting Pt-195 NMR chemical shift using new relativistic all-electron basis set. J Comput Chem 2016; 37:2360-73. [DOI: 10.1002/jcc.24461] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/23/2016] [Accepted: 07/13/2016] [Indexed: 01/26/2023]
Affiliation(s)
- D. Paschoal
- NEQC: Núcleo de Estudos em Química Computacional, Departamento de Química - ICE, Universidade Federal de Juiz de Fora, Campus Universitário, 36.036-900; Juiz de Fora MG Brasil
- NQTCM: Núcleo de Química Teórica e Computacional de Macaé, Polo Ajuda, Universidade Federal do Rio de Janeiro, Campus UFRJ-Macaé, 27.971-525; Macaé RJ Brasil
| | - C. Fonseca Guerra
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling; Vrije Universiteit Amsterdam; De Boelelaan 1083 Amsterdam HV 1081 the Netherlands
| | - M. A. L. de Oliveira
- GQAQ: Grupo de Química Analítica e Quimiometria, Departamento de Química - ICE, Universidade Federal de Juiz de Fora, Campus Universitário, 36.036-900; Juiz de Fora MG Brasil
| | - T. C. Ramalho
- GQC: Grupo de Química Computacional, Departamento de Química, Universidade Federal de Lavras, 37.200-000; Lavras MG Brasil
| | - H. F. Dos Santos
- NEQC: Núcleo de Estudos em Química Computacional, Departamento de Química - ICE, Universidade Federal de Juiz de Fora, Campus Universitário, 36.036-900; Juiz de Fora MG Brasil
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Ponce-Vargas M, Muñoz-Castro A. A study on the versatility of metallacycles in host–guest chemistry: Interactions in halide-centered hexanuclear copper(ii) pyrazolate complexes. Phys Chem Chem Phys 2014; 16:13103-11. [DOI: 10.1039/c4cp01238k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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