Preferred Label : dipolar aprotic solvent;
IUPAC definition : A solvent with a comparatively high relative permittivity (or dielectric constant),
greater than i ca /i . 15, and a sizable permanent dipole moment, that cannot donate
suitably labile hydrogen atoms to form strong hydrogen bonds, e.g. dimethyl sulfoxide.
The term (and its alternative 'polar aprotic solvent') is a misnomer and is therefore
discouraged. Such solvents are usually not aprotic but protophilic (and at most weakly
protogenic). In describing a solvent it is better to be explicit about its essential
properties, e.g. dipolar and non-protogenic.;
Origin ID : D01751;
See also
A solvent with a comparatively high relative permittivity (or dielectric constant),
greater than i ca /i . 15, and a sizable permanent dipole moment, that cannot donate
suitably labile hydrogen atoms to form strong hydrogen bonds, e.g. dimethyl sulfoxide.
The term (and its alternative 'polar aprotic solvent') is a misnomer and is therefore
discouraged. Such solvents are usually not aprotic but protophilic (and at most weakly
protogenic). In describing a solvent it is better to be explicit about its essential
properties, e.g. dipolar and non-protogenic.
