Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2007-10-02
2007-10-02
Shrivastav, Brij (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
Reexamination Certificate
active
11448857
ABSTRACT:
A method for obtaining NMR (=nuclear magnetic resonance) spectra of quadrupolar nuclei having spin I>½ using magic angle spinning (=MAS) in solid powders and transfer of coherences from a neighboring nucleus with spin S= 1/2 to single- or double-quantum transitions of quadrupolar nuclei having spin I>½, is characterized in that the transfer of coherences occurs through a combination of scalar and residual dipolar splittings. With the inventive method improved NMR-spectra can be obtained from which parameters can be extracted, which can be related to the structure and internal dynamics of solids containing the quadrupolar nuclei.
REFERENCES:
patent: 5327087 (1994-07-01), Hafner et al.
patent: 5345174 (1994-09-01), Kimmich et al.
patent: 6144199 (2000-11-01), Sharf et al.
patent: 6373250 (2002-04-01), Tsoref et al.
patent: 2003/0071619 (2003-04-01), Sauer et al.
patent: 2004/0167751 (2004-08-01), Mitschang
D. Massiot et al. “Chemical bonding differences evidenced from J-coupling in solid state NMR experiments involving quadrupolar nuclei”. Journal of Magnetic Resonance, Academic Press, Orlando, FL, US, vol. 164, No, 1, Sep. 2003, pp. 160-164.
S.E. Ashbrook et al. “Multiple-quantum cross-polarization in MAS NMR of quadrupolar nuclei”. Chemical Physics Letters, vol. 288, 1998, pp. 509-517.
R. K. Harris et al. “Quadrupolar Effects Transferred to Spin-½ Magic-Angle Spinning Spectra of Solids”. Progress in NMR Spectroscopy, vol. 24, 1992, pp. 435-456.
K. Ermolaev, B.M. Fung “High-resolution14N NMR in polycrystalline solids”. J. Chem. Phys. 1999, 110, 7977.
H.J. Jakobsen, B.M. Bildsoe, J. Skibsted, T. Giavania, “14N MAS NMR Spectroscopy: The Nitrate Ion” J. Am. Chem. Soc. 2001, 123, 5098.
P. Brunner, M. Reinhold, R.R. Ernst “Double quantum cross polarization. Heteronuclear excitation and detection of NMR double quantum transitions in solids”. J. Chem Phys. 1980, 73, 1086.
R. Tycko, P.L. Stewart, S.J. Opella “Peptide Plane Orientations Determined by Fundamental and Overtone14N NMR”. J.Am. Chem. Soc. 1986, 108, 5419-5425.
C.P. Grey, W.S. Ceeman “The detection of weak heteronuclear coupling between spin ½ nuclei in MAS NMR;14N/13C/1H triple resonance experiments”. Chem. Phys. Lett., 1992, vol. 192, 379.
C.P. Grey, A.P. Eijkelenboom, W.S. Veeman “14N Population transfers in two dimensional13C-14N-1H triple-resonance magic-angle spinning nuclear magnetic resonance spectroscopy”. Solid State Nucl. Magn. Reson., 1995, vol. 4, 113-120.
Wi Sungsool, L. Frydman “Heteronuclear Recoupling in Solid-State Magic-Angle-Spinning NMR via Overtone Irradiation”. J. Am. Chem. Soc., 2001, vol. 123, 10354-10361.
S. Antononijevic, G. Bodenhausen “High-Resolution NMR Spectroscopy in Solids by Truly Magic-Angle Spinning”. Angew. Chem. Int. Ed. 2005, vol. 44, 2935-2938.
Antonijevic Sasa
Bodenhausen Geoffrey
Lupulescu Adonis
Ecole Polytechnique Federale de Lausanne
Shrivastav Brij
Vargas Dixomara
Vincent Dr. Paul
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