Bulletin of the Korean Chemical Society

  • 제25권4호
  • /
  • Pages.529-532
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  • 2004
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Single Crystal 133Cs NMR Study of Cs+(15-Crown-5)2I-

  • Lee, Kang-Yeol (Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Kim, Tae-Ho (Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Shin, Yong-Woon (Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Kim, Jin-Eun (Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University)
  • 발행 : 2004.04.20
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초록

Cesium-133 NMR spectra of a single crystal of tetragonal $Cs^+ (15-crown-5)_2I^-$ were obtained as a function of crystal orientation in an applied magnetic field of 9.40T and analyzed to provide the magnitudes and orientations of the $^{133}Cs$ chemical shift and quadrupolar tensors for two magnetically nonequivalent and symmetry related sites. Chemical shift tensor components and parameters of quadrupolar interactions are obtained as ${\delta}_{11}=46(1),\;{\delta}_{22}=60(1),\;{\delta}_{33}=-30(1)$ ppm, quadrupole coupling constant QCC = 581(1) kHz, and asymmetry parameter ${\eta}$ = 0.481(1), respectively. The nonaxially symmetric NMR parameters imply that the local environment of the cesium nuclei is nonaxially symmetric. The DANTE experiment burned holes in the $^{133}Cs$ NMR line of the title compound. The hole burning of the single crystal and powder $^{133}Cs$ NMR lines showed that the NMR lines are not homogeneously broadened.

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피인용 문헌

  1. Symmetry Breaking Nuclear Quadrupole Coupling Tensor Orientation for Cesium-133 Nuclei Located in a Mirror Plane vol.37, pp.11, 2016, https://doi.org/10.1002/bkcs.10965
  2. Lord of The Crowns: A New Precious in the Kingdom of Clustomesogens vol.130, pp.36, 2018, https://doi.org/10.1002/ange.201806556
  3. Lord of The Crowns: A New Precious in the Kingdom of Clustomesogens vol.57, pp.36, 2018, https://doi.org/10.1002/anie.201806556
  4. Physical Chemistry Research Articles Published in the Bulletin of the Korean Chemical Society: 2003-2007 vol.29, pp.2, 2008, https://doi.org/10.5012/bkcs.2008.29.2.450
  5. Chemical Shift andSECOND‐ORDERQuadrupolar Effects in the Solid‐State133CS NMRSpectra of [Cs+(Cryptand[2.2.2])]X (X = I−, SCN vol.41, pp.7, 2020, https://doi.org/10.1002/bkcs.12057