Description:
<jats:title>Abstract</jats:title><jats:p>The polarizability α<jats:sub>vol</jats:sub>, the solvatochromic parameters π* and β and the lipophilicity as expressed by log K<jats:sub>ow</jats:sub> are subjected to regression analyses using calculated molecular parameters within the MNDO scheme. The resulting linear one‐ and more‐variable regression equations enable rapid approximate calculations for α<jats:sub>vol</jats:sub>, π* and β and log K<jats:sub>ow</jats:sub> of untested compounds; in particular, α<jats:sub>vol</jats:sub> is split into a molecular size and an electronic part which offers new possibilities for applications in quantitative structure‐activity relationships.</jats:p>