1. NMR溶剂与杂质化学位移表.pdf,Notes J. Org. Chem., Vol. 62, No. 21, 1997 7513 Table 1. 1H NMR Data proton mult CDCl (CD ) CO (CD ) SO C D CD CN CD OD D O 3 3 2 3 2 6 6 3 3 2 solvent residual peak 7.26 2.05 2.50 7.16 1.94 3.31 4.79 H2O s 1.56 2.84a 3.33a
show their degree of variability.Occasionally,in order to distinguish between peaks whose assignment was ambiguous,a further1-2μL of a specific substrate were added and the spectra run again.Table1.1H NMR Data proton mult CDCl3(CD3)2CO(CD3)2SO C6D6CD3CN CD3OD D2O solvent residual peak7....
内容提示: GlaxoSmithKline NMR Chemical Shifts for Residual Protons in Solvents Solvent CDCl3 2.13 (CD3)2SO 1.95 D2O CD3OD 1.99 Acetic Acid 1.16 Acetone 2.17 2.12 2.22 2.15 Acetonitrile 1.98 2.09 2.05 2.03 Anisyl Alcohol 4.61, 3.79 4.44, 3.74 4.57, 3.81 - Benzene 7.37 7.40 7.44 7.33 Bromoform...
solvent residual signals 1.72 5.32 7.26 2.08 7.16 6.96 2.05 2.50 1.94 5.02 3.31 4.79 3.58 6.97 6.99 3.88 7.01 7.14 7.09 water OH s 2.46 1.52 1.56 0.43 0.40 1.03 2.84 b 3.33 b 2.13 3.66 4.87 acetic acid CH 3 s 1.89 2.06 2.10 1.57 1.52 1.76 1.96 1.91 1.96 2.06 1.99 2.08 ...
solventresidualpeak7.262.052.507.161.943.314.79 H2Os1.562.84 a 3.33 a 0.402.134.87 aceticacidCH3s2.101.961.911.551.961.992.08 acetoneCH3s2.172.092.091.552.082.152.22 acetonitrileCH3s2.102.052.071.551.962.032.06 benzeneCHs7.367.367.377.157.377.33
GlaxoSmithKline NMR Chemical Shifts for Residual Protons in Solvents Solvent CDCl 3 (CD 3)2SO D 2O CD 3OD Acetic Acid 2.13 1.95 1.16 1.99 Acetone 2.17 2.12 2.22 2.15 Acetonitrile 1.98 2.09 2.05 2.03 Anisyl Alcohol 4.61, 3.79 4.44, 3.74 4.57, 3.81 Benzene 7.37 7.40 7.44 7.33 Bromoform 6.85...
1. After the recovery delay, a hard 90° (15N) pulse destroys any residual non-Boltzmann magnetization that could be present on 15N. A refocused INEPT element (two consecutive INEPT transfers [70]) transfers the initial 1H Boltzmann magnetization to in-phase magnetization on the 15N nucleus. ...
From this spectrum we determined the chemical shifts of the solvent residual peak2 and the water peak. It should be noted that the latter is quite temperature(1) For recommendations on the publication of NMR data, see: IUPAC Commission on Molecular Structure and Spectroscopy. Pure Appl. Chem....
1 31P 1/2 202.404 100 0 t a ] ) T I M ( y g o l o n h c e T f o e tAble 12.7 t u t i chemical shift data for residual Protons in common t s n nmr solvents I s t 13 t solvent δ (ppm) of residual Protons δ c (ppm) e ...
A sample of 0.6 mL of thesolvent, containing 1 µL of TMS,1was first run on itsown. From this spectrum we determined the chemicalshifts of the solvent residual peak 2 and the water peak.It should be noted that the latter is quite temperature‑(1) For recommendations on the ...