NMR Chemical Shift Values Table - Chemistry Steps
Aug 1, 2024 · NMR chemical shift and ppm value chart. The effect of electronegativity and magnetic anisotropy on protons in upfield and downfield regions.
NMR Chemical Shifts of Impurities - MilliporeSigma
Using NMR Chemical Impurities Tables. These tables can support you in identifying and separating NMR signals of impurities that might originate from residual solvents or from your reaction apparatus.
Proton NMR Table - Michigan State University
In the nmr spectrum of the dianion, the innermost methylene protons (red) give an nmr signal at +22.2 ppm, the adjacent methylene protons (blue) give a signal at +12.6 ppm, and the methyl protons (green) a signal at +5.6 ppm.
NMR Spectroscopy - Organic Chemistry Data
Feb 14, 2020 · It describes Nuclear Magnetic Resonance (NMR) in details relevant to Organic Chemistry. It also includes NMR summary data on coupling constants and chemical shift of 1H, 13C, 19F, 31P, 77Se, 11B. Spectra (PDF form) of more than 600 compounds are also provided.
NMR Periodic Table
Click an element on the Periodic Table to review the properties of its NMR-active nuclide(s), including: Spin (I) Natural abundance; NMR frequency; Magnetogyric ratio; Quadrupole moment; Receptivity relative to 1 H and 13 C; Chemical-shift range; Chemical-shift reference standard
TABLE 13.3 Chemical Shifts of Representative Carbons o- c= c= Chemical shift (ô) ppm* 100-150 110=175 190-220 Type of carbon RCH3 R2CH2 RCH2Br R3CH RCH2Cl RCH2NH2 RCH20H Chemical shift (ô) ppm* 35 40 15- 20 —40 25- 50 25- 50 35 -50 65 50- 65- …
NMR Frequency Table Isotope Spin Abundance (%) NMR Frequency (MHz) at field (T) 5.8717 7.0460 9.3947 11.7434 14.0921 1H 1/2 99.98 250.000 300.000 400.000 500.000 600.000 2H 1 1.5x102 38.376 46.051 76.753 3H 1/2 0 266.658 319.990 533.317 3He 1/2 1.3x104 190.444 228.533 380.888
NMR Chemical Shifts
Dynamic proton (1H) and carbon (13C) NMR chemical shift tables with various solvents.
a. There may be differences of 0.1—0.5 ppm in the chemical shift values calculated from this table and those measured from individual spectra. b. Ar = aromatic group.
Table of characteristic proton NMR chemical shifts. type of proton type of compound chemical shift range, ppm RC H 3 1˚ aliphatic 0.9 R 2 C H 2 2˚ aliphatic 1.3 R 3 C H 3˚ aliphatic 1.5 C=C– H vinylic 4.6–5.9 C=C– H vinylic, conjugated 5.5–7.5 C! C– H acetylenic 2–3 Ar– H aromatic 6–8.5 Ar–C– H benzylic 2.2–3 C=C–C H ...