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Aucar JJ, Melo JI, Maldonado AF. Electric Field Gradient in Chiral and Tetrahedral Molecules within High-Order LRESC Formalism. J Phys Chem A 2024; 128:5089-5099. [PMID: 38725128 DOI: 10.1021/acs.jpca.4c00426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
In this work, we present the electric field gradient (EFG) given by the linear response elimination of the small component (LRESC) scheme up to the 1/c4 order (c is the speed of light in vacuum) in CHFClX (X = Br, I, At) chiral molecules, together with CHF2Br and CH2FX (X = Br, I, At) tetrahedral systems. The former could be good candidates for further parity violation studies, especially when heavy atoms are surrounding. In this context, the LRESC scheme demonstrates effective applicability to large tetrahedral and chiral molecules that incorporate heavy elements, with relativistic effects playing a crucial role. The LRESC results of EFG exhibit an excellent agreement with those calculated at the four-component level, giving differences of only hundredths order in a.u. (atomic units) for the bromine nucleus and less than 0.1 a.u. for the iodine nucleus. Regarding the other nuclei, for the chiral molecules, there is a heavy atom effect on the light atom (HALA) for chlorine and fluorine atoms as the substituent halogen atom becomes heavier. Furthermore, the electronic part of the EFG for the central carbon and the fluorine nuclei presents an important dependence with the environment in the molecules under study. With accurate calculations of the EFG and tabulated nuclear quadrupole moment, the nuclear quadrupole coupling constant is obtained within the LRESC scheme, including for the first time correlation effects on the spin-dependent corrections with this methodology, providing results close to the experimental ones for Cl, Br, and I atoms. At the Hartree-Fock level, the differences are around 6% for Br and I nuclei, and at the density functional theory level with the LDA and PBE0 functionals, the differences are no more than 2%.
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Affiliation(s)
- Juan J Aucar
- Physics Department, Natural and Exact Science Faculty, National Northeastern University of Argentina, Avda Libertad 5460, W3404AAS Corrientes, Argentina
- Institute for Modelling and Innovative Technology, IMIT (CONICET-UNNE), Avda Libertad 5460, W3404AAS Corrientes, Argentina
| | - Juan I Melo
- CONICET - Universidad de Buenos Aires, Instituto de Física de Buenos Aires (IFIBA), C1428EGA Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, C1428EGA Buenos Aires, Argentina
| | - Alejandro F Maldonado
- Institute for Modelling and Innovative Technology, IMIT (CONICET-UNNE), Avda Libertad 5460, W3404AAS Corrientes, Argentina
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Caviezel M, Horká-Zelenková V, Seyfang G, Quack M. High resolution FTIR and diode laser spectroscopy of trifluoromethylacetylene and tetrafluoromethane in a supersonic jet expansion. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2093285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- M. Caviezel
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | - G. Seyfang
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | - M. Quack
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
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3
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Agner JA, Albert S, Allmendinger P, Hollenstein U, Hugi A, Jouy P, Keppler K, Mangold M, Merkt F, Quack M. High-resolution spectroscopic measurements of cold samples in supersonic beams using a QCL dual-comb spectrometer*. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2094297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Josef A. Agner
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | - Sieghard Albert
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | - Urs Hollenstein
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | | | - Karen Keppler
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | - Frédéric Merkt
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | - Martin Quack
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
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Quack M, Seyfang G, Wichmann G. Perspectives on parity violation in chiral molecules: theory, spectroscopic experiment and biomolecular homochirality. Chem Sci 2022; 13:10598-10643. [PMID: 36320700 PMCID: PMC9491092 DOI: 10.1039/d2sc01323a] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 06/26/2022] [Indexed: 11/21/2022] Open
Abstract
The reflection (or ‘mirror’) symmetry of space is among the fundamental symmetries of physics. It is connected to the conservation law for the quantum number parity and a fundamental ‘non-observable’ property of space (as defined by an absolute ‘left-handed’ or ‘right-handed’ coordinate system). The discovery of the violation of this symmetry – the non-conservation of parity or ‘parity violation’ – in 1956/1957 had an important influence on the further development of physics. In chemistry the mirror symmetry of space is connected to the existence of enantiomers as isomers of chiral (‘handed’) molecules. These isomers would relate to each other as idealized left or right hand or as image and mirror image and would be energetically exactly equivalent with perfect space inversion symmetry. Parity violation results in an extremely small ‘parity violating’ energy difference between the ground states of the enantiomers which can be theoretically calculated to be about 100 aeV to 1 feV (equivalent to 10−11 to 10−10 J mol−1), depending on the molecule, but which has not yet been detected experimentally. Its detection remains one of the great challenges of current physical–chemical stereochemistry, with implications also for fundamental problems in physics. In biochemistry and molecular biology one finds a related fundamental question unanswered for more than 100 years: the evolution of ‘homochirality’, which is the practically exclusive preference of one chiral, enantiomeric form as building blocks in the biopolymers of all known forms of life (the l-amino acids in proteins and d-sugars in DNA, not the reverse d-amino acids or l-sugars). In astrobiology the spectroscopic detection of homochirality could be used as strong evidence for the existence of extraterrestrial life, if any. After a brief conceptual and historical introduction we review the development, current status, and progress along these three lines of research: theory, spectroscopic experiment and the outlook towards an understanding of the evolution of biomolecular homochirality. The reflection (or ‘mirror’) symmetry of space is among the fundamental symmetries of physics. It is connected to the conservation law for the quantum number purity and its violation and has a fundamental relation to stereochemistry and molecular chirality.![]()
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Affiliation(s)
- Martin Quack
- Physical Chemistry, ETH Zürich, CH-8093 Zurich, Switzerland
| | - Georg Seyfang
- Physical Chemistry, ETH Zürich, CH-8093 Zurich, Switzerland
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5
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Wichmann G, Seyfang G, Quack M. Time-dependent dynamics of nuclear spin symmetry and parity violation in dichlorodisulfane (ClSSCl) during and after coherent radiative excitation. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1959073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | | | - Martin Quack
- Physical Chemistry, ETH Zürich, Zurich, Switzerland
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6
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Gaul K, Kozlov MG, Isaev TA, Berger R. Chiral Molecules as Sensitive Probes for Direct Detection of P-Odd Cosmic Fields. PHYSICAL REVIEW LETTERS 2020; 125:123004. [PMID: 33016729 DOI: 10.1103/physrevlett.125.123004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Potential advantages of chiral molecules for a sensitive search for parity violating cosmic fields are highlighted. Such fields are invoked in different models for cold dark matter or in the Lorentz-invariance violating standard model extensions and thus are signatures of physics beyond the standard model. The sensitivity of a 20-year-old experiment with the molecule CHBrClF to pseudovector cosmic fields as characterized by the parameter |b_{0}^{e}| is estimated to be O(10^{-12} GeV) employing ab initio calculations. This allows us to project the sensitivity of future experiments with favorable choices of chiral heavy-elemental molecular probes to be O(10^{-17} GeV), which will be an improvement of the present best limits by at least two orders of magnitude.
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Affiliation(s)
- Konstantin Gaul
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, Marburg 35032, Germany
| | - Mikhail G Kozlov
- Petersburg Nuclear Physics Institute of NRC "Kurchatov Institute", Gatchina 188300, Russia
- St. Petersburg Electrotechnical University "LETI", Professor Popov Street 5, St. Petersburg 197376, Russia
| | - Timur A Isaev
- Petersburg Nuclear Physics Institute of NRC "Kurchatov Institute", Gatchina 188300, Russia
| | - Robert Berger
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, Marburg 35032, Germany
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7
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Gaul K, Berger R. Quasi-relativistic study of nuclear electric quadrupole coupling constants in chiral molecules containing heavy elements. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1797199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Konstantin Gaul
- Fachbereich Chemie, Philipps-Universität Marburg, Marburg, Germany
| | - Robert Berger
- Fachbereich Chemie, Philipps-Universität Marburg, Marburg, Germany
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Quack M, Seyfang G, Wichmann G. Fundamental and approximate symmetries, parity violation and tunneling in chiral and achiral molecules. ADVANCES IN QUANTUM CHEMISTRY 2020. [DOI: 10.1016/bs.aiq.2020.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Affiliation(s)
- Robert Berger
- Fachbereich Chemie Philipps‐Universität Marburg Marburg Germany
| | - Jürgen Stohner
- Institute of Chemistry and Biotechnology (ICBT) Zürich University of Applied Sciences (ZHAW) Wädenswil Switzerland
- Guest scientist, Laboratory for Physical Chemistry ETH Zürich Zürich Switzerland
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10
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Manca Tanner C, Quack M, Schmidiger D. Nuclear spin symmetry conservation and relaxation of water (H216O) seeded in supersonic jets of argon and oxygen: measurements by cavity ring-down laser spectroscopy. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1484952] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - Martin Quack
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | - David Schmidiger
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
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11
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Albert S, Arn F, Bolotova I, Chen Z, Fábri C, Grassi G, Lerch P, Quack M, Seyfang G, Wokaun A, Zindel D. Synchrotron-Based Highest Resolution Terahertz Spectroscopy of the ν 24 Band System of 1,2-Dithiine (C 4H 4S 2): A Candidate for Measuring the Parity Violating Energy Difference between Enantiomers of Chiral Molecules. J Phys Chem Lett 2016; 7:3847-3853. [PMID: 27606811 DOI: 10.1021/acs.jpclett.6b01674] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The chiral C2 symmetric molecule 1,2-dithiine (1,2-dithia-3,5-hexadiene, C4H4S2) has been identified as a possible candidate for measuring the parity violating energy difference between enantiomers. We report here the observation and analysis of the low-frequency fundamental ν24 using highest resolution synchrotron-based interferometric Fourier transform infrared (FTIR) spectroscopy in the terahertz range with a band center of ν0 = 6.95375559 THz (ν̃0 = 231.952319 (10) cm-1) and two related hot bands, the (ν13 + ν24) ← ν13 band at ν0 = 6.97256882 THz (ν̃0 = 232.579861 (33) cm-1) and the 2ν24 ← ν24 band at ν0 = 7.01400434 THz (ν̃0 = 233.962001 (14) cm-1). This success in the difficult analyses of the THz spectrum of a complex chiral molecule of importance for fundamental tests on molecular parity violation is enabled by the ideal setup of an FTIR experiment of currently unique resolution with the very stable and bright synchrotron radiation at the Swiss Light Source (SLS).
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Affiliation(s)
- Sieghard Albert
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Fabienne Arn
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Irina Bolotova
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Ziqiu Chen
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Csaba Fábri
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Guido Grassi
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Philippe Lerch
- Swiss Light Source, PSI Villigen , CH 5232 Villigen, Switzerland
| | - Martin Quack
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | - Georg Seyfang
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
| | | | - Daniel Zindel
- Physical Chemistry, ETH Zurich , CH 8093 Zurich, Switzerland
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12
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Albert S, Bolotova I, Chen Z, Fábri C, Horný L, Quack M, Seyfang G, Zindel D. High resolution GHz and THz (FTIR) spectroscopy and theory of parity violation and tunneling for 1,2-dithiine (C4H4S2) as a candidate for measuring the parity violating energy difference between enantiomers of chiral molecules. Phys Chem Chem Phys 2016; 18:21976-93. [DOI: 10.1039/c6cp01493c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Our results show that this molecule is a suitable candidate for a possible first determination of the parity violating energy difference ΔpvE between enantiomers.
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Affiliation(s)
- S. Albert
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
- Swiss Light Source
| | - I. Bolotova
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - Z. Chen
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - C. Fábri
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - L'. Horný
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - M. Quack
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - G. Seyfang
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
| | - D. Zindel
- Physical Chemistry
- ETH Zurich
- CH-8093 Zurich
- Switzerland
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13
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Dietiker P, Miloglyadov E, Quack M, Schneider A, Seyfang G. Infrared laser induced population transfer and parity selection in 14NH3: A proof of principle experiment towards detecting parity violation in chiral molecules. J Chem Phys 2015; 143:244305. [DOI: 10.1063/1.4936912] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- P. Dietiker
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
| | - E. Miloglyadov
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
| | - M. Quack
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
| | - A. Schneider
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
| | - G. Seyfang
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
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14
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Prentner R, Quack M, Stohner J, Willeke M. Wavepacket Dynamics of the Axially Chiral Molecule Cl–O–O–Cl under Coherent Radiative Excitation and Including Electroweak Parity Violation. J Phys Chem A 2015; 119:12805-22. [DOI: 10.1021/acs.jpca.5b08958] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert Prentner
- Laboratory
for Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
- Chair for Philosophy, ETH Zürich, CH-8092 Zürich, Switzerland
| | - Martin Quack
- Laboratory
for Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Jürgen Stohner
- Institute
for Chemistry and Biological Chemistry, Zürich University for Applied Sciences, Campus Reidbach, CH-8840 Wädenswil, Switzerland
| | - Martin Willeke
- Laboratory
for Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
- Department of Materials, ETH Zürich, CH-8093 Zürich, Switzerland
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15
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Fábri C, Horný Ľ, Quack M. Tunneling and Parity Violation in Trisulfane (HSSSH): An Almost Ideal Molecule for Detecting Parity Violation in Chiral Molecules. Chemphyschem 2015; 16:3584-9. [DOI: 10.1002/cphc.201500801] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 09/11/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Csaba Fábri
- Physical Chemistry; ETH Zürich, CH; 8093 Zürich Switzerland
| | - Ľuboš Horný
- Physical Chemistry; ETH Zürich, CH; 8093 Zürich Switzerland
| | - Martin Quack
- Physical Chemistry; ETH Zürich, CH; 8093 Zürich Switzerland
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16
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Albert S, Keppler K, Quack M. High-resolution rovibrational spectroscopy of fluorobenzene, C6H5F: analysis of theB1fundamentals ν4, ν10b, ν17b, theB2fundamental ν15and assignment of theA1levels ν12, 2ν16aand 2ν18b†. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1023754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Horný Ľ, Quack M. Computation of molecular parity violation using the coupled-cluster linear response approach. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1012131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ľuboš Horný
- Laboratory of Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Martin Quack
- Laboratory of Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland
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18
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Quack M. On Biomolecular Homochirality as a Quasi-Fossil of the Evolution of Life. ADVANCES IN CHEMICAL PHYSICS 2014. [DOI: 10.1002/9781118959602.ch18] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Nahrwold S, Berger R, Schwerdtfeger P. Parity violation in nuclear magnetic resonance frequencies of chiral tetrahedral tungsten complexes NWXYZ (X, Y, Z = H, F, Cl, Br or I). J Chem Phys 2014; 140:024305. [DOI: 10.1063/1.4852176] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Hobi F, Berger R, Stohner J. Investigation of parity violation in nuclear spin-rotation interaction of fluorooxirane. Mol Phys 2013. [DOI: 10.1080/00268976.2013.816444] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Fabian Hobi
- Zürich University of Applied Sciences ZHAW, Institute for Chemistry and Biological Chemistry ICBC , Campus Reidbach, Wädenswil, CH-8820, Switzerland
| | - Robert Berger
- TU Darmstadt, Clemens-Schöpf Institute , Petersenstrasse 22, Darmstadt, DE-64287, Germany
| | - Jürgen Stohner
- Zürich University of Applied Sciences ZHAW, Institute for Chemistry and Biological Chemistry ICBC , Campus Reidbach, Wädenswil, CH-8820, Switzerland
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Abstract
We review the frontiers of spectroscopy from a historical perspective, starting with the development of atomic spectroscopy about 150 years ago, followed by some comments on selected previous Faraday Discussions. As the spectrum of frontiers at the Faraday Discussion 150 is very broad, we give only a brief survey providing a map of the various frontiers approached today. This is followed by an exemplary discussion of one particular frontier towards the spectroscopic detection of symmetry violations in fundamental physics. In particular the understanding of parity violation in chiral molecules has recently made great progress. We briefly describe the advances made in recent decades as well as the current status of theory and experiments in this exciting field of research. We conclude with an outlook on open questions and frontiers of the future in spectroscopy.
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Affiliation(s)
- Martin Quack
- ETH Zürich, Laboratory of Physical Chemistry, CH-8093 Zürich, Switzerland.
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Molecular Parity Violation and Chirality: The Asymmetry of Life and the Symmetry Violations in Physics. QUANTUM SYSTEMS IN CHEMISTRY AND PHYSICS 2012. [DOI: 10.1007/978-94-007-5297-9_3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Pochert J, Quack M. Vibrational spectroscopy, anharmonic resonances, and intramolecular vibrational redistribution in tetrafluoroiodoethane. Mol Phys 2011. [DOI: 10.1080/00268979809483238] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jorg Pochert
- a Laboratorium fur Physikalische Chemie , ETH-Zurich (Zentrum) , Zurich , Switzerland
| | - Martin Quack
- a Laboratorium fur Physikalische Chemie , ETH-Zurich (Zentrum) , Zurich , Switzerland
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24
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Schnell M, Küpper J. Tailored molecular samples for precision spectroscopy experiments. Faraday Discuss 2011; 150:33-49; discussion 113-60. [DOI: 10.1039/c0fd00009d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Albert S, Albert KK, Lerch P, Quack M. Synchrotron-based highest resolution Fourier transform infrared spectroscopy of naphthalene (C10H8) and indole (C8H7N) and its application to astrophysical problems. Faraday Discuss 2011; 150:71-99; discussion 113-60. [DOI: 10.1039/c0fd00013b] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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McNaughton D, Robertson EG, Thompson CD, Chimdi T, Bane MK, Appadoo D. Overview of High-Resolution Infrared Measurement and Analysis for Atmospheric Monitoring of Halocarbons. Anal Chem 2010; 82:7958-64. [DOI: 10.1021/ac101425d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Don McNaughton
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia, La Trobe University, Department of Chemistry, Bundoora, Victoria 3086, Australia, and Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168, Australia
| | - Evan G. Robertson
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia, La Trobe University, Department of Chemistry, Bundoora, Victoria 3086, Australia, and Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168, Australia
| | - Christopher D. Thompson
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia, La Trobe University, Department of Chemistry, Bundoora, Victoria 3086, Australia, and Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168, Australia
| | - Tarekegn Chimdi
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia, La Trobe University, Department of Chemistry, Bundoora, Victoria 3086, Australia, and Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168, Australia
| | - Michael K. Bane
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia, La Trobe University, Department of Chemistry, Bundoora, Victoria 3086, Australia, and Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168, Australia
| | - Dominique Appadoo
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia, La Trobe University, Department of Chemistry, Bundoora, Victoria 3086, Australia, and Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168, Australia
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27
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Sunahori FX, Su Z, Kang C, Xu Y. Infrared diode laser spectroscopic investigation of four C–H stretching vibrational modes of propylene oxide. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.05.072] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Grubbs GS, Kadiwar G, Bailey WC, Cooke SA. The complete iodine and nitrogen nuclear electric quadrupole coupling tensors for fluoroiodoacetonitrile determined by chirped pulse Fourier transform microwave spectroscopy. J Chem Phys 2010; 132:024310. [DOI: 10.1063/1.3291619] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Quack M, Stohner J, Willeke M. High-Resolution Spectroscopic Studies and Theory of Parity Violation in Chiral Molecules. Annu Rev Phys Chem 2008; 59:741-69. [DOI: 10.1146/annurev.physchem.58.032806.104511] [Citation(s) in RCA: 198] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We review the high-resolution spectroscopic approach toward the study of intramolecular dynamics, emphasizing molecular parity violation. Theoretical work in the past decade has shown that parity-violating potentials in chiral molecules are much larger (typically one to two orders of magnitude) than anticipated on the basis of older theories. This makes experimental approaches toward small molecular parity-violating effects promising. The concepts and results of intramolecular dynamics derived from spectroscopy are analyzed as a sequence of symmetry breakings. We summarize the concepts of symmetry breakings (de facto and de lege) in view of parity violation in chiral molecules. The experimental schemes and the current status of spectroscopic experiments on molecular parity violation are established. We discuss the promises of detecting and accurately measuring parity-violating energy differences Δpv E on the order of 10−11 J mol−1 (approximately 100 aeV) in enantiomers of chiral molecules with regard to their contribution to fundamental physics in the framework of the standard model of particle physics and more speculative future fundamental symmetry tests such as for the combined charge conjugation, parity, and time-reversal (CPT) symmetry violation.
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Affiliation(s)
- Martin Quack
- ETH Zürich Laboratorium für Physikalische Chemie, CH-8093 Zürich, Switzerland
| | - Jürgen Stohner
- Permanent address: Institute of Chemistry and Biology, Zürich University of Applied Sciences, CH-8400 Winterthur, Switzerland
| | - Martin Willeke
- Permanent address: Departement für Materialwissenschaften, ETH Zürich, 8093 Zürich, Switzerland
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Hippler M, Oeltjen L, Quack M. High-Resolution Continuous-Wave-Diode Laser Cavity Ring-Down Spectroscopy of the Hydrogen Fluoride Dimer in a Pulsed Slit Jet Expansion: Two Components of the N = 2 Triad near 1.3 μm. J Phys Chem A 2007; 111:12659-68. [DOI: 10.1021/jp076894s] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Hippler
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland, and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England
| | - Lars Oeltjen
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland, and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England
| | - Martin Quack
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland, and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England
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31
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Albert S, Quack M. High Resolution Rovibrational Spectroscopy of Chiral and Aromatic Compounds. Chemphyschem 2007; 8:1271-81. [PMID: 17566970 DOI: 10.1002/cphc.200700018] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The analysis of selected rovibrationally resolved infrared spectra of some relatively heavy and large polyatomic molecules is reviewed. A short historical summary of the development of high resolution interferometric Fourier transform infrared (FTIR) spectrometers is given and the possibilities of the currently most highly resolving FTIR spectrometer, which is commercially available in the Bruker IFS 125 series, are discussed. The computational tools necessary to analyse FTIR spectra are described briefly. As examples of rovibrational analysis the spectra of three selected molecules CHCl(2)F, CDBrClF, and pyridine (C(5)H(5)N) are discussed. The spectrum of CHCl(2)F, a fluorochlorohydrocarbon, is of interest for a better understanding of the chemistry of the Earth's atmosphere. CDBrClF is a chiral molecule and therefore the analysis of its rovibrational spectra provides the basis for carrying out further experiments towards the detection of molecular parity violation. The analysis of the pyridine FTIR spectra illustrates the potential of the new generation of FTIR spectrometers in the study of spectra and rovibrational dynamics of aromatic systems and molecules of potential biological interest.
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Affiliation(s)
- Sieghard Albert
- Laboratorium für Physikalische Chemie, ETH Zürich, Wolfgang Pauli Str. 10, 8093 Zürich, Switzerland.
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32
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Albert S, Bauerecker S, Quack M, Steinlin A. Rovibrational analysis of the 2ν 3, 3ν 3 and ν 1 bands of CHCl2F measured at 170 and 298 K by high-resolution FTIR spectroscopy. Mol Phys 2007. [DOI: 10.1080/00268970601164198] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Berger R, Stuber JL. Electroweak interactions in chiral molecules: two-component density functional theory study of vibrational frequency shifts in polyhalomethanes. Mol Phys 2007. [DOI: 10.1080/00268970601126759] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Robert Berger
- Frankfurt Institute for Advanced Studies (FIAS), Johann Wolfgang Goethe-University , Max-von-Laue-Straße 1, D-60438 Frankfurt am Main, Germany
| | - Jason L. Stuber
- Frankfurt Institute for Advanced Studies (FIAS), Johann Wolfgang Goethe-University , Max-von-Laue-Straße 1, D-60438 Frankfurt am Main, Germany
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34
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Viglione RG. Theoretical determination of parity-violating vibrational frequency differences between the enantiomers of chiral molecules. J Chem Phys 2006; 121:9959-63. [PMID: 15549870 DOI: 10.1063/1.1807815] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A perturbation treatment has been used to compute the leading first- and second-order parity-violating corrections to the vibrational energy levels of a chiral molecule. Assuming the molecular equilibrium geometry as expansion point of both parity-violating and parity-conserving potential-energy surfaces, it is shown that these corrections, i.e., harmonic and anharmonic contributions, are of the same order of magnitude and that none of them can be neglected for a realistic determination of vibrational frequency differences. Numerical tests based on ab initio MP2 force fields and quantum-relativistic calculations of the parity-violating potential for each normal mode of PHBrF and AsHBrF molecules confirm this conclusion. In particular, it is shown that a normal mode of AsHBrF is characterized by one of the largest vibrational frequency difference ever found--the prediction is approximately 0.1 Hz--only one order of magnitude less than the presumed resolution limit of current experimental investigations.
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Affiliation(s)
- Rosario G Viglione
- Dipartimento di Chimica, Università degli Studi di Salerno, via S. Allende, 84081 Baronissi (SA), Italy.
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35
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Rauhut G, Barone V, Schwerdtfeger P. Vibrational analyses for CHFClBr and CDFClBr based on high levelab initiocalculations. J Chem Phys 2006; 125:054308. [PMID: 16942214 DOI: 10.1063/1.2236112] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Anharmonicity corrections to the harmonic vibrational spectra of CHFClBr and its deuterated isotopomer were computed by means of variational and perturbational approaches. A comparison of both methods is provided. Based on CCSD(T)/aug-cc-pVTZ electronic structure calculations excellent agreement with experimental data was obtained. Absolute mean deviations are in the range of about 4 cm(-1) for the fundamental modes, while slightly larger values of about 7 cm(-1) were found for the first vibrational overtones. In addition, vibrationally averaged structural parameters are provided for both molecules. The calculations will serve as a future starting point for parity-violation effects in vibrational transitions in these chiral molecules.
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Affiliation(s)
- Guntram Rauhut
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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36
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Quack M, Willeke M. Stereomutation Tunneling Switching Dynamics and Parity Violation in Chlorineperoxide Cl−O−O−Cl. J Phys Chem A 2006; 110:3338-48. [PMID: 16509660 DOI: 10.1021/jp055770h] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In a search for efficient spectroscopic avenues toward experiments on molecular parity violation, we investigate the stereomutation tunneling processes in the axially chiral chlorine isotopomers of Cl2O2 by the quasi-adiabatic channel reaction path Hamiltonian (RPH) approach and the corresponding parity violating potentials by means of quantum chemical calculations including our recently developed Multiconfiguration linear response (MC-LR) approach to electroweak quantum chemistry. The calculated ground-state torsional tunneling splittings for all isotopomers of Cl2O2 are much smaller than the parity violating energy differences Delta(pv)E between the enantiomers of these molecules and therefore parity violation is predicted to dominate the quantum dynamics of stereomutation at low energies. We also compare these with torsional ground-state tunneling splittings and parity violating energy differences of the whole series of axially chiral HXYH(+) isotopomers (with X, Y= Cl(+), O, S, Se, Te). A comparison with our previous results for the homologous molecule Cl2S2 shows that for Cl2O2 a spectroscopic high-resolution analysis should be easier and the energy region of large tunneling splittings should be more easily accessible by IR excitation. We thus propose a scheme using "tunneling switching" with vibrational excitation in order to carry out the measurement of time-dependent parity violation in superposition states of initially well-defined parity. We discuss the advantages and drawbacks of such an experiment that can be carried out entirely in the IR spectral range (for Cl2O2 or related molecules).
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Affiliation(s)
- Martin Quack
- Physical Chemistry, ETH Zurich, CH-8093 Zurich, Switzerland.
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37
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Soulard P, Asselin P, Cuisset A, Aviles Moreno JR, Huet TR, Petitprez D, Demaison J, Freedman TB, Cao X, Nafie LA, Crassous J. Chlorofluoroiodomethane as a potential candidate for parity violation measurements. Phys Chem Chem Phys 2006; 8:79-92. [PMID: 16482247 DOI: 10.1039/b510675c] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
CHFClI is among the more favorable molecules for parity violation (PV) measurements in molecules. Despite the fact that calculated PV effects are two orders of magnitude smaller than in some organometallic compounds, CHFClI displays interesting features which could make possible a new experimental PV test on this molecule. Indeed, ultrahigh resolution spectroscopy using an ultrastable CO(2) laser is favored by several intrinsic properties of this molecule. For example, the high vapor pressure of CHFClI allows investigation by supersonic beam spectroscopy. Indeed, the spectroscopic constants have been accurately determined by microwave and millimetre wave spectroscopy. This is important for the subsequent selection of an appropriate absorption band of CHFClI that could be brought to coïncide with the absorption of CO(2). Partially resolved (+)- and (-)-CHFClI enantiomers with respectively 63.3 and 20.5% ee's have been recently prepared and analyzed by molecular recognition using chiral hosts called cryptophanes. Finally, the S-(+)/R-(-) absolute configuration was ascertained by vibrational circular dichroïsm (VCD) in the gas phase.
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Affiliation(s)
- Pascale Soulard
- Université Pierre et Marie Curie-Paris 6, CNRS Laboratoire Dynamique Interactions et Réactivité, UMR 7075, Case 49, Place Jussieu, 75252 Paris Cedex 05, France
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38
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Barone V, Viglione RG. Harmonic and anharmonic contributions to parity-violating vibrational frequency difference between enantiomers of chiral molecules. J Chem Phys 2005; 123:234304. [PMID: 16392917 DOI: 10.1063/1.2137719] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A general perturbative procedure for the computation of harmonic and anharmonic contributions to parity-violating vibrational shifts is introduced and applied to PHBrF and AsHBrF. The results point out the importance of both diagonal and off-diagonal anharmonic contributions and indicate that some parity-violating shift of AsHBrF approaches the resolution forecasted for next generation experiments. The proposed approach is sufficiently general and computationally effective to allow studies of similar and larger molecular systems.
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Affiliation(s)
- Vincenzo Barone
- Dipartimento di Chimica, Università di Napoli Federico II, via Cintia, 80126 Napoli, Italy.
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39
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Gottselig M, Quack M. Steps towards molecular parity violation in axially chiral molecules. I. Theory for allene and 1,3-difluoroallene. J Chem Phys 2005; 123:084305. [PMID: 16164289 DOI: 10.1063/1.1884114] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In view of exploring possibilities for an experimental investigation of molecular parity violation we report quantum-chemical calculations of the parity-conserving and parity-violating potentials in the framework of electroweak quantum chemistry in allene C3H4 and 1,3-difluoroallene C3H2F2, which is nonplanar and axially chiral in the electronic ground state but expected to be nearly planar and achiral in several electronically excited states. The parity-violating potentials Epv for allene and 1,3-difluoroallene calculated with the multiconfiguration linear-response (MC-LR) approach of Berger and Quack [J. Chem. Phys. 112, 3148 (2000)] show qualitatively similar behavior as a function of torsional angle tau with maximum values of about 0.5 pJ mol(-1) for C3H4 and 2 pJ mol(-1) for C3H2F2. However, in the latter case they are asymmetrically shifted around tau=90 degrees , with a nonzero value at the chiral equilibrium geometry resulting in a parity-violating energy difference between enantiomers DeltapvE=Epv(P)-Epv(M)=1.2 pJ mol(-1) (equivalent to about 10(-13) cm(-1)). The calculated barrier heights corresponding to the nonrigid (multiple, and in part chiral) transition states in 1,3-difluoroallene fall in the range of 180-200 kJ mol(-1). These high barriers result in hypothetical tunneling splittings much smaller than DeltapvE and thus parity violation dominates over tunneling for the stereomutation dynamics in 1,3-difluoroallene. Therefore, DeltapvE is predicted to be a spectroscopically measurable energy difference. Two of the lower excited electronic states of C3H2F2 (1A and 3A) are calculated to be planar or quasiplanar, allowing, in principle, for spectroscopic state selection of states of well-defined parity. The results are discussed in relation to possible schemes of measuring parity violation in chiral molecules.
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Affiliation(s)
- Michael Gottselig
- Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zurich, CH-8093 Zurich, Switzerland
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40
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Cuisset A, Aviles Moreno JR, Huet TR, Petitprez D, Demaison J, Crassous J. The Chiral Molecule CHClFI: First Determination of Its Molecular Parameters by Fourier Transform Microwave and Millimeter-Wave Spectroscopies Supplemented by ab Initio Calculations. J Phys Chem A 2005; 109:5708-16. [PMID: 16833903 DOI: 10.1021/jp0443658] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The rotational spectrum of chlorofluoroiodomethane (CHClFI) has been investigated. Because its rotational spectrum is extremely crowded, extensive ab initio calculations were first performed in order to predict the molecular parameters. The low J transitions were measured using a pulsed-molecular-beam Fourier transform spectrometer, and the millimeter-wave spectrum was measured to determine accurate centrifugal distortion constants. Because of the high resolution of the experimental techniques, the analysis yielded accurate rotational constants, centrifugal distortion corrections, and the complete quadrupole coupling tensors for the iodine and chlorine nuclei, as well as the contribution of iodine to the spin-rotation interaction. These molecular parameters were determined for the two isotopologs CH35ClFI and CH37ClFI. They reproduce the observed transitions within the experimental accuracy. Moreover, the ab initio calculations have provided a precise equilibrium molecular structure. Furthermore, the ab initio molecular parameters are found in good agreement with the corresponding experimental values.
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Affiliation(s)
- A Cuisset
- Laboratoire de Physique des Lasers, Atomes et Molécules UMR 8523 CNRS-Université de Lille 1, 59655 Villeneuve d'Ascq Cedex, France.
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41
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42
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Quack M, Stohner J. Combined multidimensional anharmonic and parity violating effects in CDBrClF. J Chem Phys 2003. [DOI: 10.1063/1.1622381] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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43
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Gottselig M, Quack M, Willeke M. Mode-selective stereomutation tunneling as compared to parity violation in hydrogen diselenide isotopomers1,2,3H280Se2. Isr J Chem 2003. [DOI: 10.1560/1khd-g0yt-3yeu-n16p] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Crassous J, Monier F, Dutasta JP, Ziskind M, Daussy C, Grain C, Chardonnet C. Search for resolution of chiral fluorohalogenomethanes and parity-violation effects at the molecular level. Chemphyschem 2003; 4:541-8. [PMID: 12836475 DOI: 10.1002/cphc.200200536] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The first observation of a parity-violation effect in molecules induced by weak interactions is still a dream that requires the synthesis and, eventually, the resolution of the enantiomers of well-chosen simple chiral molecules together with an appropriate experimental set-up for high-resolution spectroscopy. Performing IR spectroscopy on highly enantiomerically enriched samples of bromochlorofluoromethane succeeded in giving an upper limit of 10(-13) for the relative vibrational energy difference between the two enantiomers. These results led us to conceive a new experimental set-up based on a supersonic molecular beam and to work on other chiral molecules, such as chlorofluoroiodomethane. A synthesis of (+/-)-CHCIFI from racemic chlorofluoroiodoacetic acid should, in the near future permit the preparation of optically active samples of this haloform. The development of molecular beam spectroscopy using a two-photon Ramsey-fringes experiment should allow us to reach the precision needed to observe parity violation. These experimental challenges, which stimulate a close collaboration between chemists and physicists, are presented. The success of these projects would open the route to new information on the molecular Hamiltonian, a better knowledge of the electroweak interaction, and a better control of the various chirality-related properties of simple molecules.
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Affiliation(s)
- Jeanne Crassous
- Laboratoire de Chimie UMR CNRS 5532-Ecole Normale Supérieure de Lyon 46, allée d'Italie, 69364 Lyon, France.
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Laubender G, Berger R. Ab initio calculation of parity-violating chemical shifts in NMR spectra of chiral molecules. Chemphyschem 2003; 4:395-9. [PMID: 12728558 DOI: 10.1002/cphc.200390070] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Guido Laubender
- Chemistry Department, Technical University Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
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46
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Quack M. Wie wichtig ist Paritätsverletzung für die molekulare und biomolekulare Chiralität? Angew Chem Int Ed Engl 2002. [DOI: 10.1002/ange.200290004] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Abstract
Parity violation leads to energy differences delta(pv)H(o)(0)=N(A)delta(pv)E of enantiomers in the femtojoule to picojoule per mole range. Recently introduced methods of electroweak quantum chemistry predict such energy differences to be one to two orders of magnitude larger than previously accepted-but still very small. How can such small energies be measured and what are the consequences for our understanding of molecular chirality, biomolecular homochirality, and perhaps fundamental physics? The review gives some tentative answers to these questions. We discuss the current status of theory and some of the current experimental approaches.
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Affiliation(s)
- Martin Quack
- ETH Zürich, Physical Chemistry, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich, Switzerland.
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48
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López JC, de Luis A, Blanco S, Lesarri A, Alonso JL. Investigation of the quadrupole coupling hyperfine structure due to two nuclei by molecular beam Fourier transform microwave spectroscopy: spectra of dichlorofluoromethane and pyridazine. J Mol Struct 2002. [DOI: 10.1016/s0022-2860(02)00099-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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49
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He Y, Hollenstein H, Quack M, Richard E, Snels M, Bürger H. High resolution analysis of the complex symmetric CF3 stretching chromophore absorption in CF3I. J Chem Phys 2002. [DOI: 10.1063/1.1370948] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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50
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