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Donor number estimation for oxygen- and nitrogen-containing solvents via proton NMR shift of chloroform

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Abstract

A linear correlation was determined for oxygen- and nitrogen-containing solvents between the proton NMR shift of chloroform, dilute in a solvent, and the donor number (DN) of that solvent. Results are given for water and for 13 organic solvents. The best straight line is given by DN=7.4–16.6Δδ (CHCl 3 ) where Δδ (CHCl 3 ) is the shift of pure chloroform relative to that of chloroform in dilute solution. Donor numbers of several solvents were estimated from the correlation.

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Hahn, S., Miller, W.M., Lichtenthaler, R.N. et al. Donor number estimation for oxygen- and nitrogen-containing solvents via proton NMR shift of chloroform. J Solution Chem 14, 129–137 (1985). https://doi.org/10.1007/BF00648901

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Key words

  • Donor number estimation
  • oxygen- and nitrogen-containing solvents
  • chloroform
  • proton NMR solvent shift
  • solvent basicity scale