1
|
Khalitov KF, Khalitov FG. Bond Lengths and Atomic Radii in Compounds EX3 (E = N, P, As, Sb; X = F, Cl, Br, I). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422110115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
2
|
Harrison JF. A Hirshfeld interpretation of the charge, spin distribution, and polarity of the dipole moment of the open shell (Σ3−) nitrogen halides: NF, NCl, and NBr. J Chem Phys 2009; 131:044117. [DOI: 10.1063/1.3190330] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
3
|
Okabayashi T, Kawajiri H, Umeyama M, Ide C, Oe S, Tanimoto M. Microwave spectroscopy of the PBr radical in the X (3)Sigma(-) state. J Chem Phys 2008; 129:124301. [PMID: 19045017 DOI: 10.1063/1.2977732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The microwave spectrum of the PBr radical in the X (3)Sigma(-) ground electronic state has been observed by a source modulated spectrometer. The PBr radical was generated in a free space cell by an acdc glow discharge in a mixture of PBr(3) with He andor H(2). A spectrum with three spin components for each of the two isotopomers, P(79)Br and P(81)Br, was observed. The spectrum showed hyperfine splitting caused by interactions due to both bromine and phosphorus nuclei. The molecular constants including the magnetic hyperfine and nuclear quadrupole hyperfine interaction constants were determined by analyzing the observed spectrum. The spin density of the unpaired electrons was estimated from the observed hyperfine coupling constants to be 85.4% and 16.3% on the phosphorus and bromine atoms, respectively.
Collapse
Affiliation(s)
- Toshiaki Okabayashi
- Graduate School of Science and Technology, Shizuoka University, 836 Oya, Suruga-ku, Shizuoka 422-8529, Japan.
| | | | | | | | | | | |
Collapse
|
4
|
Zeng Y, Meng L, Zheng S, Ge M, Wang D. A DFT study of the generation of interstellar species XN (X=Cl, and Br) activated by molecular sieve clusters. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.10.143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
5
|
Remenyi C, Reviakine R, Arbuznikov AV, Vaara J, Kaupp M. Spin−Orbit Effects on Hyperfine Coupling Tensors in Transition Metal Complexes Using Hybrid Density Functionals and Accurate Spin−Orbit Operators. J Phys Chem A 2004. [DOI: 10.1021/jp049395p] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christian Remenyi
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Laboratory of Physical Chemistry, Department of Chemistry, P.O. Box 55 (A. I. Virtasen aukio 1), FIN-00014 University of Helsinki, Finland
| | - Roman Reviakine
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Laboratory of Physical Chemistry, Department of Chemistry, P.O. Box 55 (A. I. Virtasen aukio 1), FIN-00014 University of Helsinki, Finland
| | - Alexei V. Arbuznikov
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Laboratory of Physical Chemistry, Department of Chemistry, P.O. Box 55 (A. I. Virtasen aukio 1), FIN-00014 University of Helsinki, Finland
| | - Juha Vaara
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Laboratory of Physical Chemistry, Department of Chemistry, P.O. Box 55 (A. I. Virtasen aukio 1), FIN-00014 University of Helsinki, Finland
| | - Martin Kaupp
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany, and Laboratory of Physical Chemistry, Department of Chemistry, P.O. Box 55 (A. I. Virtasen aukio 1), FIN-00014 University of Helsinki, Finland
| |
Collapse
|
6
|
Arbuznikov AV, Vaara J, Kaupp M. Relativistic spin-orbit effects on hyperfine coupling tensors by density-functional theory. J Chem Phys 2004; 120:2127-39. [PMID: 15268351 DOI: 10.1063/1.1636720] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A second-order perturbation theory treatment of spin-orbit corrections to hyperfine coupling tensors has been implemented within a density-functional framework. The method uses the all-electron atomic mean-field approximation and/or spin-orbit pseudopotentials in incorporating one- and two-electron spin-orbit interaction within a first-principles framework. Validation of the approach on a set of main-group radicals and transition metal complexes indicates good agreement between all-electron and pseudopotential results for hyperfine coupling constants of the lighter nuclei in the system, except for cases in which scalar relativistic effects become important. The nonrelativistic Fermi contact part of the isotropic hyperfine coupling constants is not always accurately reproduced by the exchange-correlation functionals employed, particularly for the triplet and pi-type doublet radicals in the present work. For this reason, ab initio coupled-cluster singles and doubles with perturbative triples results for the first-order contributions have been combined in the validation calculations with the density-functional results for the second-order spin-orbit contributions. In the cases where spin-orbit corrections are of significant magnitude relative to the nonrelativistic first-order terms, they improve the agreement with experiment. Antisymmetric contributions to the hyperfine tensor arise from the spin-orbit contributions and are discussed for the IO2 radical, whereas rovibrational effects have been evaluated for RhC, NBr, and NI.
Collapse
Affiliation(s)
- Alexei V Arbuznikov
- Institut fur Anorganische Chemie, Universitat Wurzburg, Am Hubland, D-97074 Wurzburg, Germany.
| | | | | |
Collapse
|
7
|
|
8
|
Patchkovskii S, Ziegler T. Calculation of the EPR g-Tensors of High-Spin Radicals with Density Functional Theory. J Phys Chem A 2001. [DOI: 10.1021/jp010457a] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Patchkovskii
- Department of Chemistry, University of Calgary, 2500 University Dr. NW, Calgary, Alberta, T2N 1N4 Canada
| | - T. Ziegler
- Department of Chemistry, University of Calgary, 2500 University Dr. NW, Calgary, Alberta, T2N 1N4 Canada
| |
Collapse
|
9
|
Drouin BJ, Miller CE, Müller HS, Cohen EA. The Rotational Spectra, Isotopically Independent Parameters, and Interatomic Potentials for the X(1)(2)Pi(3/2) and X(2)(2)Pi(1/2) States of BrO. JOURNAL OF MOLECULAR SPECTROSCOPY 2001; 205:128-138. [PMID: 11148117 DOI: 10.1006/jmsp.2000.8252] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Observations of the rotational spectrum of BrO have been extended to include vibrational levels up to v = 8 in the X(1)(2)Pi(3/2) and v = 7 in the X(2)(2)Pi(1/2) states. The rotational spectra of isotopically enriched Br(18)O, X(1), v = 0, 1 and X(2), v = 0 have been observed as well. The spectra of all four isotopic species have been fit to a Hamiltonian in which the parameters have fixed isotopic ratios. An extensive set of isotopically independent parameters has been determined. Interatomic potentials have been derived for both the X(1) and X(2) states. The hyperfine constants and their vibrational dependencies have been determined more precisely and several of them have been determined for the first time. These are interpreted in terms of the electronic structure of the molecule. The isotope relations among the constants have provided a means of decorrelating the electron spin-rotation constant gamma from the fine-structure centrifugal distortion constant, A(D), and have allowed the first determination of an effective value for gamma. Copyright 2001 Academic Press.
Collapse
Affiliation(s)
- BJ Drouin
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, 91109-8099
| | | | | | | |
Collapse
|
10
|
Sakamaki T, Okabayashi T, Tanimoto M. Microwave spectrum of the NI radical in the X 3Σ− ground state. J Chem Phys 1999. [DOI: 10.1063/1.479938] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|