Stefano Chimichi

NMR- Solvents

Solvents used in NMR- spectroscopy are organic liquids of low viscosity and good solubilizing ability. To prevent overlapping by strong solvent signals in the 1H- NMR- spectroscopy protons need to be exchanged by deuterons. In addition the deuteron resonance serves as lock- signal for the stabilisation of the spectrometer. Common solvents are available in different degrees of deuteration:

Degree of deuteration [%] 99 99.5 99.8 99.95
Remaining concentration of protons [mol/l] 0.1 - 0.06 0.05 - 0.03 0.02 - 0.01 0.006 - 0.003
Advisable concentration of substance [mol/l] 0.1 0.05 0.02 0.005

The most important physical data are available by clicking at the name of the solvent. The chemical shift data refers to the standard TMS. Any other standard is given in brackets.

Aceton- d6 Ethanol- d6
Acetonitrile- d3 Formic acid- d2
Benzene- d6 Methanol- d4
Chloroform- d1 Nitromethane- d3
Deuteriumoxide Pyridine- d5
Dichloromethane- d2 1,1,2,2- Tetrachloroethane- d2
Dimethylformamide- d7 Tetrahydrofurane- d8
Dimethylsulfoxide- d6 Toluene- d8
1,4- Dioxane- d8 Trifluoroacetic acid- d1

Physical Data from Handbook of Instrumental Analysis, NMR Spectroscopy, Merck and Chemical shifts from H-O.Kalinowski,S.Berger,S.Braun "Carbon-13 NMR Spectroscopy" and Frank A. Bovey "Nuclear Magnetic Resonance Spectroscopy", Second Edition

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