Transcription of NMRChemicalShiftsofCommon …
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NMRChemicalShiftsofCommon …
7512 J. Org. Chem. 1997, 62, 7512-7515. NMR Chemical Shifts of Common Laboratory Solvents as Trace Impurities Hugo E. Gottlieb,* Vadim Kotlyar, and Abraham Nudelman*. Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel Received June 27, 1997. In the course of the routine use of NMR as an aid for organic chemistry, a day-to-day problem is the identifica- tion of signals deriving from common contaminants (water, solvents, stabilizers, oils) in less-than-analyti- cally-pure samples. This data may be available in the literature, but the time involved in searching for it may be considerable. Another issue is the concentration dependence of chemical shifts (especially 1H); results obtained two or three decades ago usually refer to much Figure 1.
NMRChemicalShiftsofCommon LaboratorySolventsasTraceImpurities HugoE.Gottlieb,*VadimKotlyar,and AbrahamNudelman* …
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