parachor

As an additive quantity the parachor has been used in solving various structural problems.

Though he did very useful work on molecular structure by other means, his main contributions came through his 'parachor'.

In 1924 he published work on the parachor, a function of surface tension which could give information about the structure of molecules.

As a part of a broader scheme dealing with empirical equations in organic chemistry, the parachor was also revised.