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Donor number estimation for oxygen- and nitrogen-containing solvents via proton NMR shift of chloroform |
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| Authors: | Hahn Susie Miller William M Lichtenthaler Rudiger N Prausnitz John M |
| Institution: | (1) Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Chemical Engineering Department, University of California, 94720 Berkeley, CA;(2) Present address: Chemical Engineering Department, University of Illinois, Urbana, IL.;(3) Present address: Institut für Physikalische Chemie, Universität Heidelberg, 6900 Heidelberg, Germany |
| 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=7.4–16.6  (CHCl
3
) where (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. |
| Keywords: | Donor number estimation oxygen- and nitrogen-containing solvents chloroform proton NMR solvent shift solvent basicity scale |
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