Indirect Detection of Hydroxy Proton Exchange Through Deuterium-Induced 13C-NMR 13C-NMR Isotope shift Isotope Shifts

2014 ◽  
pp. 129-135 ◽  
Author(s):  
Shinya Hanashima ◽  
Yoshiki Yamaguchi
Keyword(s):  
13C Nmr ◽  
Isotope Shift ◽  
Proton Exchange ◽  
Indirect Detection ◽  
Isotope Shifts ◽  
Hydroxy Proton

13C-NMR quantification of proton exchange at LewisX hydroxyl groups in water

2011 ◽  
Vol 47 (38) ◽  
pp. 10800 ◽  
Author(s):  
Shinya Hanashima ◽  
Koichi Kato ◽  
Yoshiki Yamaguchi
Keyword(s):  
13C Nmr ◽  
Proton Exchange ◽  
Hydroxyl Groups

ISOTOPE SHIFT IN THE SECOND SPECTRUM OF BARIUM

1967 ◽  
Vol 45 (12) ◽  
pp. 3931-3934 ◽  
Author(s):  
F. M. Kelly ◽  
E. Tomchuk
Keyword(s):  
Isotope Shift ◽  
Magnetic Hyperfine ◽  
Isotope Shifts ◽  
Hyperfine Structures ◽  
Second Spectrum ◽  
Made In

Measurements of isotope shifts and magnetic hyperfine structures have been made in λ 4 934 Å in the second spectrum of barium. The measurements are compared with those of other authors.

Progress at NIST in measuring the D-lines of Li isotopes using an optical frequency synthesizerThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010.

2011 ◽  
Vol 89 (1) ◽  
pp. 59-62 ◽  
Author(s):  
Clayton E. Simien ◽  
Samuel M. Brewer ◽  
Joseph N. Tan ◽  
John D. Gillaspy ◽  
Craig J. Sansonetti
Keyword(s):  
Stable Isotopes ◽  
Electron Scattering ◽  
Isotope Shift ◽  
Frequency Comb ◽  
Sufficient Accuracy ◽  
Halo Nuclei ◽  
Optical Frequency ◽  
Atomic Systems ◽  
Isotope Shifts ◽  
Strong Disagreement

Precise spectroscopic experiments with light atoms can provide information about nuclear properties that are very difficult to obtain in electron scattering experiments. For example, relative nuclear radii of low-Z isotopes can be determined accurately from isotope shifts. Theory has attained sufficient accuracy to study exotic, short-lived halo nuclei by interpreting precise spectroscopic measurements. However, serious inconsistencies remain in the measured isotope shifts for the D1 and D2 lines of the stable isotopes (6Li and 7Li). The latest experiments, within the last decade, are in strong disagreement with each other and with theory. We report on the progress of a new experiment at the National Institute of Standards and Technology (NIST) to measure these lithium D lines using an optical frequency comb. A preliminary result for the splitting isotope shift (SIS) is presented.

Isotope shift studies of the high-pressure carbon bands

1968 ◽  
Vol 46 (10) ◽  
pp. 1254-1255 ◽  
Author(s):  
R. K. Dhumwad ◽  
N. A. Narasimham
Keyword(s):  
High Pressure ◽  
Isotope Shift ◽  
Initial Level ◽  
Isotope Shifts

High-pressure carbon bands have been excited in condensed discharges through CO containing about 40% enriched 13C and photographed on a 3.4-m Ebert grating spectrograph. The isotope shifts, ν 12C2–ν′ 12C13C, measured for the bands at 4368.8, 4680.2, 5899.3, and 6442.3 Å, agree with those calculated on the assumption that the bands arise from an initial level of ν′ = 6 and involve the 6–4, 6–5, 6–8, and 6–9 transitions of the A3Πg–X′ 3Πu system of C2.

81Br/79Br-Induced 13C Isotope Shifts and Line Broadening in the 13C NMR Spectrum of Methyl Bromide

1997 ◽  
Vol 35 (2) ◽  
pp. 141-143 ◽  
Author(s):  
William T. Raynes ◽  
Nickolai M. Sergeyev ◽  
Peter Sandor ◽  
Martin Grayson
Keyword(s):  
13C Nmr ◽  
Methyl Bromide ◽  
Line Broadening ◽  
Nmr Spectrum ◽  
Isotope Shifts ◽  
13C Isotope

scholarly journals Proton-deuterium isotope shifts in 59Co N.M.R.

1978 ◽  
Vol 31 (5) ◽  
pp. 1141 ◽  
Author(s):  
MR Bendall ◽  
DM Doddrell
Keyword(s):  
Field Strength ◽  
Isotope Shift ◽  
Deuterium Atom ◽  
Ligand Field ◽  
Isotope Shifts

An isotope shift of 5 ppm per deuterium atom has been observed for the 59Co resonance of tris(ethylenediamine)cobalt(III) chloride ([Co(en)3]Cl3) and hexaamminecobalt(III) chloride([Co(NH3)6]Cl3) after exchange of hydrogen for deuterium. The upfield direction of the shift can be readily understood as changes in the ligand-field strength causing changes in the nuclear paramagnetic screening.

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