Relevant bibliographies by topics / Quadrupole Coupling Constant

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Quadrupole Coupling Constant'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Quadrupole Coupling Constant"

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Pietraß, Tanja, Paul K. Burkert, and Hans H. Karsch. "7Li-Solid-State-NMR of [Li(N,N,N',N'-Tetramethylethylenediamine)] CLO4 and [Li (N,N,N', N'-Tetramethylethylenediamine)2] Al(CH3)4." Zeitschrift für Naturforschung A 47, no. 1-2 (1992): 117–19. http://dx.doi.org/10.1515/zna-1992-1-220.

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Abstract The temperature dependent 7Li-solid-state-NMR spectra of the two compounds [Li(N,N,N',N'- tetramethylethylenediamine)]ClO4 and [Li(N,N,N\N tetramethylethylenediamine)2]Al(CH3)4 are presented. Both compounds were investigated in the temperature range 160 K ≦ T ≦ 360 K. Above room temperature, the spectra for the tetramethylaluminate show the typical line shape for a first-order quadrupolar-disturbed central transition with an axially symmetric asymmetry parameter and a slightly positive temperature dependence of the quadrupole coupling constant. The mean temperature coefficient ά = + 9
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Brownlee, RTC, BP Shehan, and AG Wedd. "Applications of 95Mo N.M.R. Spectroscopy. XVIII. Relaxation Times, Quadrupole Coupling Constants and Partial Field Gradients in [Mo(CO)5L] Complexes." Australian Journal of Chemistry 41, no. 9 (1988): 1457. http://dx.doi.org/10.1071/ch9881457.

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A study of ,95Mo spin-lattice relaxation times (T1) and linewidths of [Mo(CO)5L] complexes, where L = PPh3, AsPh3, SbPh3, pyridine and Cl-, has shown that the relaxation times are due entirely to the quadrupolar mechanism, with no scalar coupling contribution to linewidth where molybdenum is bonded to a quadrupolar nucleus. Based on the literature value of the quadrupole coupling constant obtained by n.q.r . for the PPh3 complex (1.972 MHz), the quadrupole coupling constants of the arsine and stibine complexes are determined to be 3.36 and 3.75 MHz respectively. These values, and that of the p
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Sham, Simon, and Gang Wu. "Zinc-67 NMR study of tetrahedral and octahedral zinc sites with symmetrical oxygen, nitrogen, and sulfur ligands." Canadian Journal of Chemistry 77, no. 11 (1999): 1782–87. http://dx.doi.org/10.1139/v99-154.

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We report a 67Zn nuclear magnetic resonance (NMR) study of compounds containing zinc ions coordinated by oxygen, nitrogen, and sulfur ligands. New information concerning 67Zn nuclear quadrupole coupling constants (NQCC) and chemical shift was obtained from magic-angle spinning (MAS) spectra of solid compounds containing both natural abundance and enriched 67Zn isotopes. Rapid ligand exchange processes of [Zn(thiourea)4]2+ in aqueous solutions were also observed.Key words: 67Zn NMR, nuclear quadrupolar coupling constant, ligand exchange.
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Lucken, E. A. C. "A Theoretical Study of the Vibrational Dependence of the Nuclear Quadrupole Coupling Constants of some Diatomic Molecules." Zeitschrift für Naturforschung A 49, no. 1-2 (1994): 133–36. http://dx.doi.org/10.1515/zna-1994-1-221.

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Abstract The nuclear quadrupole coupling constant was calculated as a function of inter nuclear distance for nine quadrupolar nuclei in eight diatomic molecules by the STO 321G method. From the value of the field-gradient and its first and second derivatives the vibrational dependence of the coupling constants were calculated and shown to com pare satisfactorily with experiment. The behaviour of the field-gradient as a function of inter nuclear distance can in most cases be rationalized in terms of the field-gradient that will arise for the infinitely separated atoms.
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Santhanam, V., and J. Sobhanadri. "Nuclear Quadrupole Coupling Constant and Conformational Studies." Zeitschrift für Naturforschung A 41, no. 1-2 (1986): 166–68. http://dx.doi.org/10.1515/zna-1986-1-224.

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A molecular conformation study on three 3-monosubstituted derivatives of propene has beencarried out by evaluating the EFG at the site of the halogen nucleus using a semi-empiricalLCAO-MO-SCF method. Calculations are performed on several conformers at INDO andCNDO level, using “sp” and “spd” valence basis sets, with Slater type orbitals as the basisfunctions. The results obtained for various conformers indicate that the nuclear quadrupolecoupling constant is practically independent of the orientation of the CH2X group (X = Cl, Brand I) (Figure 1). The mean value of e2 Qqzz/h (averaged over all
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Christillin, P., та G. Dillon. "On the γNΔ quadrupole coupling constant(s)". Journal of Physics G: Nuclear and Particle Physics 16, № 6 (1990): 805–11. http://dx.doi.org/10.1088/0954-3899/16/6/005.

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Hadki, Hamza El, Kenneth J. Koziol, Oum Keltoum Kabbaj, Najia Komiha, Isabelle Kleiner, and Ha Vinh Lam Nguyen. "The Microwave Rotational Electric Resonance (RER) Spectrum of Benzothiazole." Molecules 28, no. 8 (2023): 3419. http://dx.doi.org/10.3390/molecules28083419.

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The microwave spectra of benzothiazole were measured in the frequency range 2–26.5 GHz using a pulsed molecular jet Fourier transform microwave spectrometer. Hyperfine splittings arising from the quadrupole coupling of the 14N nucleus were fully resolved and analyzed simultaneously with the rotational frequencies. In total, 194 and 92 hyperfine components of the main species and the 34S isotopologue, respectively, were measured and fitted to measurement accuracy using a semi-rigid rotor model supplemented by a Hamiltonian accounting for the 14N nuclear quadrupole coupling effect. Highly accura
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Bittner, Eric R., José Matos, Kurt W. Hillig, and Robert L. Kuczkowski. "Hyperfine Structure in the Microwave Spectrum of Trifluorophosphine Oxide and Sulfide." Zeitschrift für Naturforschung A 42, no. 12 (1987): 1415–17. http://dx.doi.org/10.1515/zna-1987-1210.

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The microwave spectra of 17OPF3 and 33SPF3 were investigated by Fourier transform microwave spectroscopy and the 17O and 33S quadrupole coupling constants were determined. The 17O coupling constant is compared with several others from related phosphine oxides to characterize the π-bonding in these systems.
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Davis, J., D. Tinet, J. J. Fripiat, J. M. Amarilla, B. Casal, and E. Ruiz-Hitzky. "51V and 93Nb high resolution NMR study of NbVO5." Journal of Materials Research 6, no. 2 (1991): 393–400. http://dx.doi.org/10.1557/jmr.1991.0393.

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NbVO5 is characterized by 51V and 93Nb NMR resonance frequencies strongly upfield shifted when compared to those in model compounds V2O5 and LiNbO3. The chemical shift anisotropy dominates the 51V observed spectrum in a magnetic field of 11.7 T. The asymmetry parameter ηc is 0.2 and the quadrupole coupling constant is relatively small (1 MHz). The quadrupolar Hamiltonian overwhelmingly dominates the 93Nb spectrum (ηQ = 0.9) and the quadrupole coupling constant is huge (16.5 MHz). In agreement with the structure obtained from the x-ray powder diagram the isotropic chemical shift of 51V suggests
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Blasberg, Tilo, and Dieter Suter. "Determination of the Sign of Nuclear Quadrupole Interaction by Laser-Radiofrequency Double-Resonance Determination of the Sign of Nuclear Quadrupole Interaction by Laser-Radiofrequency Double-Resonance." Zeitschrift für Naturforschung A 49, no. 1-2 (1994): 14–18. http://dx.doi.org/10.1515/zna-1994-1-205.

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Abstract We describe a new type of laser-radiofrequency double-resonance experiment, which allows to determine not only the absolute value but also the sign of nuclear quadrupole coupling constants. This determination of the sign, which is essential for the comparison with calculated EFG tensors, is not possible with purely magnetic experiments. The m ethod has a high resolution and, because of the optical detection, also a high sensitivity. As an example, the quadrupole coupling constant for Pr3+ :YAlO3 was measured at 4.38 K and was found to be negative.
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Dissertations / Theses on the topic "Quadrupole Coupling Constant"

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Pennanen, T. (Teemu). "Computational studies of NMR and magneto-optical rotation parameters in water." Doctoral thesis, University of Oulu, 2012. http://urn.fi/urn:isbn:9789514297311.

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Abstract In this thesis nuclear magnetic resonance (NMR) and magneto-optical rotation (MOR) parameters are investigated for water, paying special attention to the effect of solvation from gaseous to liquid phase. Nuclear magnetic shielding and quadrupole coupling tensors of NMR spectroscopy are studied for gaseous and liquid water. Liquid state is modelled by a 32-molecule Car-Parrinello molecular dynamics simulation, followed by property calculations for the central molecules in clusters cut out from the simulation trajectory. Gaseous state is similarly represented by a one-molecule simulatio
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He, Zhi-Ming, and 何志明. "Ab initio caculation of nuclear quadrupole coupling constant." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/72838806841588811930.

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Ho, Tse-Ming, and 何志明. "AB Initio Calculation of Nuclear Quadrupole Coupling Constants." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/41830419650156549683.

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Cheng, Wen-Zhang, and 鄭文章. "Measurements of Quadrupople Coupling Constants in Liquids by NMR Relaxation Methods." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/12427732949010059743.

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劉麗文. "Probe of Pi-Bonding in Benzonitrile and Its Derivatives by Nitrogen-14 Quadrupole Coupling Constants." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/53921598976312040291.

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碩士<br>國立成功大學<br>化學學系<br>83<br>It has been recently demonstrated that nuclear quadrupolar relaxation time (Tlq) measurements provide a powerful tool for determination of quadrupole coupling constants (QCC) in liquids. This technique, however, requires an accurate value of the correlation time , τc, of the electric field gradient vector. In the research, we investigate the migration of π-electron between benzonitrile and its various substitution from the measured values of QCC(14N). Substitution and solvent effects have also been examined. 　　Measurements of the relaxation time and the nuclear Ov
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Books on the topic "Quadrupole Coupling Constant"

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Hüttner, W., ed. Dipole Moments, Quadrupole Coupling Constants, Hindered Rotation and Magnetic Interaction Constants of Diamagnetic Molecules. Springer-Verlag, 2002. http://dx.doi.org/10.1007/b75954.

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Tiemann, Eberhard, and Wolfgang Hüttner. Dipole Moments, Quadrupole Coupling Constants, Hindered Rotation and Magnetic Constants of Diamagnetic Molecules. Springer Berlin / Heidelberg, 2022.

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Demaison, J., W. Hüttner, E. Tiemann, G. Wlodarczak, and J. Vogt. Dipole Moments, Quadrupole Coupling Constants, Hindered Rotation and Magnetic Constants of Diamagnetic Molecules/ Dipolmomente, Quadrupolkopplungskonstanten, ... Konstanten diamagnetischer Molekeln. Springer, 1992.

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Demaison, J., W. Hüttner, G. Wlodarczak, H. Hübner, and J. Vogt. Dipole Moments, Quadrupole Coupling Constants, Hindered Rotation and Magnetic Interaction Constants of Diamagnetic Molecules (Landolt-Bornstein: Numerical ... Relationships in Science and Technology). Springer, 2002.

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Book chapters on the topic "Quadrupole Coupling Constant"

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Schwerdtfeger, Peter, Markus Pernpointner, and Witold Nazarewicz. "Calculation of Nuclear Quadrupole Coupling Constants." In Calculation of NMR and EPR Parameters. Wiley-VCH Verlag GmbH & Co. KGaA, 2004. http://dx.doi.org/10.1002/3527601678.ch17.

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Takeda, Masuo, Junhu Wang, Tatsuru Nishimura, Katsuya Suzuki, Takafumi Kitazawa, and Masashi Takahashi. "155Gd Mössbauer Isomer Shifts and Quadrupole Coupling Constants of Gadolinium Complexes." In ICAME 2003. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2852-6_55.

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Guelachvili, Guy, and Nathalie Picqué. "16O16O17O Rotational and Centrifugal Distortion Constants, Quadrupole Coupling Constants χ and Spin Rotation Constants C for the (000) State." In Molecular Constants Mostly from Infrared Spectroscopy. Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-57960-2_154.

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Guelachvili, Guy, and Nathalie Picqué. "16O17O16O Rotational and Centrifugal Distortion Constants, Quadrupole Coupling Constants χ and Spin Rotation Constants C for the (000) State." In Molecular Constants Mostly from Infrared Spectroscopy. Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-57960-2_184.

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Poleshchuk, O. K., V. Branchadell, R. A. Ritter, and A. V. Fateev. "Quadrupole coupling constants and isomeric Mössbauer shifts for halogen-containing gold, platinum, niobium, tantalum and antimony compounds." In HFI/NQI 2007. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85320-6_86.

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"Deuterium Quadrupole Coupling Constants from 2H T1 Relaxation Measurements in Solution." In Practical NMR Relaxation for Chemists. John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470094486.ch9.

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Conference papers on the topic "Quadrupole Coupling Constant"

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Huff, Anna, Ken Leopold, Becca Mackenzie, and Chris Dewberry. "MICROWAVE SPECTRUM, VAN DER WAALS BOND LENGTH, AND 131Xe QUADRUPOLE COUPLING CONSTANT OF Xe-SO3." In 70th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.rh02.

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Коненков, Н. В., А. И. Иванов та В. А. Степанов. "ГАУССОВ ПУЧОК КАК МОДЕЛЬ ИСТОЧНИКА ИОНОВ". У Актуальные проблемы физики и технологии в образовании, науке и производстве. Crossref, 2021. http://dx.doi.org/10.37724/z6586-3254-5949-f.

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Для расчета статистического аксептанса КФМ использовался траекторный метод. Функция плотности вероятности захваченных фазовых точек предназначена для определения матриц вторых моментов. Элементы этих матриц описывают эллипсы захвата на X и Y фазовых плоскостях. Мерой согласования Гауссова пучка и аксептанса квадруполя служат площади эллипсов. При постоянных параметрах Гауссова пучка ионов эффективность согласования слабо уменьшается с увеличением разрешающей способности. Полученные данные будут полезны при проектировании современных источников ионов. To calculate the statistical QMF acceptance
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Cooper, Graham, Nick Walker, Anthony Legon, Chris Medcraft, and Cara Anderson. "ROTATIONAL SPECTRA AND NUCLEAR QUADRUPOLE COUPLING CONSTANTS OF IODOIMIDAZOLES." In 72nd International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2017. http://dx.doi.org/10.15278/isms.2017.fb11.

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Carrillo, Michael, Yasuki Endo, and Wei Lin. "MICROWAVE SPECTRUM AND IODINE NUCLEAR QUADRUPOLE COUPLING CONSTANTS OF 1,1-DIIODOETHANE." In 2021 International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2021. http://dx.doi.org/10.15278/isms.2021.fk09.

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Cooper, Graham, Nick Walker, Anthony Legon, and Chris Medcraft. "ROTATIONAL SPECTRA AND NUCLEAR QUADRUPOLE COUPLING CONSTANTS OF 4-HALOPYRAZOLES C3N2H3X (X = Br, I)." In 72nd International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2017. http://dx.doi.org/10.15278/isms.2017.fb04.

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Obenchain, Daniel, William Klemperer, Stewart Novick, and Derek Frank. "THE POSITION OF DEUTERIUM IN THE HOD−N2O AS DETERMINED BY STRUCTURAL AND NUCLEAR QUADRUPOLE COUPLING CONSTANTS." In 70th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.rh11.

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Long, B., S. Cooke, Lucas Hansen, and E. Arsenault. "THE ROTATIONAL SPECTRA, STRUCTURES, AND CHLORINE NUCLEAR ELECTRIC QUADRUPOLE COUPLING CONSTANTS FOR A FAMILY OF THREE HALOGENATED CYCLIC ALKENES, CnF2n−4Cl2: n = 4, 5, AND 6." In 69th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.re11.

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Galeev, R. V., L. N. Gunderova, G. R. Garipova, et al. "Microwave spectra of 2-chloro-4, 5-dimethyl-1, 3, 2-dioxaphospholene-35Cl, -37Cl, -13C me , -13C Ring : partial substitution structure--quadruple coupling constants." In Omsk - DL tentative, edited by Leonid N. Sinitsa. SPIE, 1992. http://dx.doi.org/10.1117/12.131154.

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Liang, Lin, Ting Lei, and Matthew Blyth. "AUTOMATIC LOGGING-WHILE-DRILLING DIPOLE SONIC SHEAR PROCESSING ENABLED BY PHYSICS-DRIVEN MACHINE LEARNING." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0059.

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Logging-while-drilling (LWD) dipole sonic tools have been introduced to the industry as a supplement to monopole and quadrupole measurement because they can provide shear slowness anisotropy, which is essential for formation characterization and well completion applications. Due to the presence of the collar, which acts as a strong waveguide, the recorded formation signal is significantly affected at low frequencies. Consequently, an automated interpretation of LWD dipole sonic data re-mains a challenge. The traditional dispersive semblance-based method requires accurate estimates of parameter
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