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Senges G, Li L, Wodyński A, Beckers H, Müller R, Kaupp M, Riedel S. Matrix Isolation Spectroscopic and Relativistic Quantum Chemical Study of Molecular Platinum Fluorides PtF n (n=1-6) Reveals Magnetic Bistability of PtF 4. Chemistry 2021; 27:13642-13650. [PMID: 34289174 PMCID: PMC8518493 DOI: 10.1002/chem.202102055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Indexed: 11/08/2022]
Abstract
Molecular platinum fluorides PtFn, n=1–6, are prepared by two different routes, photo‐initiated fluorine elimination from PtF6 embedded in solid noble‐gas matrices, and the reaction of elemental fluorine with laser‐ablated platinum atoms. IR spectra of the reaction products isolated in rare‐gas matrices under cryogenic conditions provide, for the first time, experimental vibrational frequencies of molecular PtF3, PtF4 and PtF5. Photolysis of PtF6 enabled a highly efficient and almost quantitative formation of molecular PtF4, whereas both PtF5 and PtF3 were formed simultaneously by subsequent UV irradiation of PtF4. The vibrational spectra of these molecular platinum fluorides were assigned with the help of one‐ and two‐component quasirelativistic DFT computation to account for scalar relativistic and spin–orbit coupling effects. Competing Jahn‐Teller and spin–orbit coupling effects result in a magnetic bistability of PtF4, for which a spin‐triplet (3B2g, D2h) coexists with an electronic singlet state (1A1g, D4h) in solid neon matrices.
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Affiliation(s)
- Gene Senges
- Freie Universität Berlin, Institut für Chemie und Biochemie-Anorganische Chemie, Fabeckstrasse 34/36, 14195, Berlin, Germany
| | - Lin Li
- Freie Universität Berlin, Institut für Chemie und Biochemie-Anorganische Chemie, Fabeckstrasse 34/36, 14195, Berlin, Germany
| | - Artur Wodyński
- Technische Universität Berlin, Institut für Chemie Theoretische Chemie/Quantenchemie, Sekr. C7, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Helmut Beckers
- Freie Universität Berlin, Institut für Chemie und Biochemie-Anorganische Chemie, Fabeckstrasse 34/36, 14195, Berlin, Germany
| | - Robert Müller
- Technische Universität Berlin, Institut für Chemie Theoretische Chemie/Quantenchemie, Sekr. C7, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Martin Kaupp
- Technische Universität Berlin, Institut für Chemie Theoretische Chemie/Quantenchemie, Sekr. C7, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Sebastian Riedel
- Freie Universität Berlin, Institut für Chemie und Biochemie-Anorganische Chemie, Fabeckstrasse 34/36, 14195, Berlin, Germany
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Liu X, Meijer G, Pérez-Ríos J. A data-driven approach to determine dipole moments of diatomic molecules. Phys Chem Chem Phys 2020; 22:24191-24200. [PMID: 33147314 DOI: 10.1039/d0cp03810e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We present a data-driven approach for the prediction of the electric dipole moment of diatomic molecules, which is one of the most relevant molecular properties. In particular, we apply Gaussian process regression to a novel dataset to show that dipole moments of diatomic molecules can be learned, and hence predicted, with a relative error ⪅5%. The dataset contains the dipole moment of 162 diatomic molecules, the most exhaustive and unbiased dataset of dipole moments up to date. Our findings show that the dipole moment of diatomic molecules depends on atomic properties of the constituents atoms: electron affinity and ionization potential, as well as on (a feature related to) the first derivative of the electronic kinetic energy at the equilibrium distance.
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Affiliation(s)
- Xiangyue Liu
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Gerard Meijer
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Jesús Pérez-Ríos
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
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Permanent electric dipole moments of PtX (X = H, F, Cl, Br, and I) by the composite approach. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.09.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zou W, Suo B. Theoretical Study of Low-Lying Electronic States of PtX (X = F, Cl, Br, and I) Including Spin-Orbit Coupling. J Phys Chem A 2016; 120:6357-70. [PMID: 27463417 DOI: 10.1021/acs.jpca.6b05730] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The low-lying electronic states of platinum ions (Pt(+)) and platinum monohalides (PtX; X = F, Cl, Br, and I) are calculated using the multireference configuration interaction method with relativistic effective core potentials. The spin-orbit coupling is taken into account through the perturbative state-interaction approach. For the Ω states of PtX below 35000 cm(-1), the potential energy curves and the corresponding spectroscopic constants are reported. It is found that the lowest Ω = 3/2 state is the ground one for the four species of PtX. Overall, the theoretical results are in reasonable agreement with the available experimental data.
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Affiliation(s)
- Wenli Zou
- Institute of Modern Physics, Northwest University , Xi'an, Shaanxi 710069, People's Republic of China.,Shaanxi Key Laboratory for Theoretical Physics Frontiers , Xi'an, Shaanxi 710069, People's Republic of China
| | - Bingbing Suo
- Institute of Modern Physics, Northwest University , Xi'an, Shaanxi 710069, People's Republic of China.,Shaanxi Key Laboratory for Theoretical Physics Frontiers , Xi'an, Shaanxi 710069, People's Republic of China
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Womack K, O'Brien LC, Whittemore S, O'Brien JJ, Le A, Steimle TC. High resolution electronic spectroscopy of the A (2)Σ- - X (2)Π1/2 transition of PtN. J Chem Phys 2014; 141:084304. [PMID: 25173011 DOI: 10.1063/1.4893703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The (2,0) vibrational band of the A (2)Σ(-) - X (2)Π1/2 transition of platinum nitride, PtN, was recorded at Doppler-limited resolution using intracavity laser absorption spectroscopy (ILS) and at sub-Doppler resolution using molecular beam laser induced fluorescence (LIF) spectroscopy. Isotopologue structure for (194)PtN, (195)PtN, and (196)PtN, magnetic hyperfine splitting due to (195)Pt (I = ½), and nuclear quadrupole splitting due to (14)N (I = 1) were observed in the spectrum. Molecular constants for the ground and excited states are derived. The hyperfine interactions are used to illuminate the nature of the A (2)Σ(-) excited electronic state.
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Affiliation(s)
- Kaitlin Womack
- Department of Chemistry, Southern Illinois University, Edwardsville, Illinois 62026-1652, USA
| | - Leah C O'Brien
- Department of Chemistry, Southern Illinois University, Edwardsville, Illinois 62026-1652, USA
| | - Sean Whittemore
- Department of Chemistry and Biochemistry and Center for Nanoscience, University of Missouri, St. Louis, Missouri 63121-4400, USA
| | - James J O'Brien
- Department of Chemistry and Biochemistry and Center for Nanoscience, University of Missouri, St. Louis, Missouri 63121-4400, USA
| | - Anh Le
- Department of Chemistry, Arizona State University, Tempe, Arizona 96287-1604, USA
| | - Timothy C Steimle
- Department of Chemistry, Arizona State University, Tempe, Arizona 96287-1604, USA
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