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Mendizabal F, Ceron ML, Lara D, Miranda-Rojas S. Closed-shell d 10-d 10 mechanochromic [AuPh(CNPh)] n complex: quantum chemistry electronic and optical properties. RSC Adv 2024; 14:5638-5647. [PMID: 38352689 PMCID: PMC10863605 DOI: 10.1039/d3ra08935e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/31/2024] [Indexed: 02/16/2024] Open
Abstract
The electronic structure, spectroscopic properties, and solid state chemistry of monomer and dimers of [AuPh(CNPh)] complex were studied at post-Hartree-Fock (MP2, SCS-MP2, and CC2) and density functional theory levels. The absorption spectra of these complexes were calculated using single excitation time-dependent (TD) methods at DFT, CC2, and SCS-CC2 levels. The influences of the bulk are accounted for at the PBE-D3 level, incorporating dispersion effects. The calculated values agree with the experimental range, where absorption and emission energies reproduce experimental trends with large Stokes shifts. The aurophilic interaction is identified as a key factor influencing the spectroscopic and structural properties of these complexes. The intermetallic interactions were found as the main factor responsible for MMCT electronic transitions in the models studied.
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Affiliation(s)
- Fernando Mendizabal
- Departamento de Química, Facultad de Ciencias, Universidad de Chile Casilla 653 Santiago Chile
| | - María Luisa Ceron
- Facultad de Ingeniería, Universidad Finis Terrae Av. Pedro de Valdivia 1509, Providencia Santiago Chile
| | - Dina Lara
- Departamento de Química, Facultad de Ciencias, Universidad de Chile Casilla 653 Santiago Chile
| | - Sebastián Miranda-Rojas
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello Avenida República 275 Santiago Chile
- Universidad Andrés Bello, Centro de Química Teórica & Computacional (CQT&C), Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Avenida República 275 8370146 Santiago de Chile Chile
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Lara D, Santibañez D, Miranda-Rojas S, Mendizabal F. Is there a Covalent Au(I)-Au(I) Bond in the trans-(AuX) 2 (X = F, Cl, Br, I) Structure? A Post-Hartree-Fock and Density Functional Theory Study. Inorg Chem 2023; 62:15421-15431. [PMID: 37690083 DOI: 10.1021/acs.inorgchem.3c01547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
We present an exhaustive exploration of the driving forces dominating the interaction between gold atoms in the trans-(AuX)2, where X is a halogen ligand. This work provides insights into the nature of the gold-gold contact in the trans-(AuX)2. The geometries and energies were calculated at the MP2, CCSD(T), and DFT-D3(BJ) (B3LYP, PBE, and TPSS) levels of theory. The results show a short Au-Au distance, typical of a covalent bond, but with a weak interaction energy associated with noncovalent interactions. It is established that the physical contributions from polarization and the electronic correlation forces are the most relevant at the post-Hartree-Fock level of theory. Also, the electrostatic term is attractive but with low contribution. Finally, the Wiberg indices and NBO analysis exposed a small covalent character between the gold atoms, revealing that this contribution is insufficient to explain the stability of the dimers. It is concluded that a sum of contributions makes it possible to establish an attraction between the gold atoms in the dimers studied beyond a classical aurophilic interaction.
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Affiliation(s)
- Dina Lara
- Departamento de Químicas, Facultad de Ciencias, Universidad de Chile, Casilla, 653 Santiago, Chile
| | - Daniel Santibañez
- Departamento de Químicas, Facultad de Ciencias, Universidad de Chile, Casilla, 653 Santiago, Chile
| | - Sebastián Miranda-Rojas
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Avenida República 275, 8370146 Santiago, Chile
- Centro de Química Teórica & Computacional (CQT&C), Facultad de Ciencias Exactas, Departamento de Ciencias Químicas, Universidad Andrés Bellos, Avenida República 275, 8370146 Santiago de Chile, Chile
| | - Fernando Mendizabal
- Departamento de Químicas, Facultad de Ciencias, Universidad de Chile, Casilla, 653 Santiago, Chile
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Mendizabal F, Miranda-Rojas S. Closed-shell d 10-d 10 in [AuCl(CNR)] n and [AuCl(CO)] n ( n = 1, 2; R = -H, -CH 3, -Cy) complexes: quantum chemistry study of their electronic and optical properties. RSC Adv 2022; 12:7516-7528. [PMID: 35424682 PMCID: PMC8982242 DOI: 10.1039/d1ra07269b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 02/21/2022] [Indexed: 11/21/2022] Open
Abstract
The electronic structure and spectroscopic properties of [AuCl(CNR)] and [AuCl(CO)] (R = -H, -CH3, -Cy) complexes with d10-d10 type interactions were studied at the post-Hartree-Fock (MP2, SCS-MP2, CCSD(T)) and density functional theory levels. It was found that the nature of the intermetal interactions is consistent with the presence of an electrostatic (dipole-dipole) contribution and a dispersion-type interaction. The absorption spectra of these complexes were calculated using the single excitation time-dependent (TD) method at the DFT and SCS-CC2 levels. The calculated values are in agreement with the experimental range, where the absorption and emission energies reproduce the experimental trends, with large Stokes shifts. According to this, intermetallic interactions were found to be mainly responsible for the metal-metal charge transfer (MMCT) electronic transitions among the models studied.
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Affiliation(s)
- Fernando Mendizabal
- Departamento de Química, Facultad de Ciencias, Universidad de Chile Casilla 653 Santiago Chile
| | - Sebastián Miranda-Rojas
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello Avenida República 275 Santiago Chile
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Oka H, Katoh K, Okada Y, Oka D, Hitosugi T, Yamashita M, Fukumura T. Single Molecular Adsorption of Terbium(III) Bis-phthalocyaninato (TbPc 2) Governed by Two Surface Reconstructions of Perovskite Type SrVO 3 Epitaxial Ultrathin Film. CHEM LETT 2021. [DOI: 10.1246/cl.210270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hirofumi Oka
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Core Research Cluster for Materials Science, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Josai University, Saitama 350-0295, Japan
| | - Yoshinori Okada
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Daichi Oka
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Taro Hitosugi
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Masahiro Yamashita
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Core Research Cluster for Materials Science, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Tomoteru Fukumura
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Core Research Cluster for Materials Science, Tohoku University, Sendai, Miyagi 980-8577, Japan
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
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Wang E, Gao Y. Elucidating the stabilities and properties of the thiolate-protected Au nanoclusters with detaching the staple motifs. J Chem Phys 2021; 155:044302. [PMID: 34340381 DOI: 10.1063/5.0056933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Thiolate-protected Au nanoclusters (AuNCs) have been widely studied in areas of catalysis, biosensors, and bioengineering. In real applications, e.g., catalytic reactions, the thiolate groups are normally partially detached. However, which of the thiolate groups are easily detached and how the detachment of the ligands affects the geometries and electronic structures of the Au nanoclusters have been rarely studied. In this work, we employed the density functional theory calculations as well as the molecular orbital analysis to explore the detachment effect of the ligands using nine thiolate-protected AuNCs as examples. Our results showed that there existed a nearly linear relationship between the averaged detachment energies and the numbers of Au atoms in the motifs. Detaching longer motifs normally required more energies owing to the stronger aurophilic effects. For detaching a full motif, based on the structure decomposition via the grand unified model, analysis on the inner Au core indicated that the change in Au-Au bond length was more sensitive for the inter-block compared to the intra-block. The detachment of the -SH fragment generally needs less energy and brings less structural deformations when compared to the removal of a full motif. Molecular orbital analysis showed that the relative energies of the HOMO orbitals were elevated, which led to the narrow down of the HOMO-LUMO gap. This work provides a primary description of the correlation of the ligands' detachment with the relative stabilities and structures of the AuNCs, which would be beneficial for establishing the structure-property relationship of AuNCs in real applications.
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Affiliation(s)
- Endong Wang
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Yi Gao
- Interdisciplinary Research Center, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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Majeed SA, Sekhosana KE, Tuhl A. Progress on phthalocyanine-conjugated Ag and Au nanoparticles: Synthesis, characterization, and photo-physicochemical properties. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.10.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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