Structures of nitrogen-containing aromatic compounds. I. The metastable crystalline form of dibenzo-1,3a,4,6a-tetraazapentalene (DBTAP-2)

Abstract

In order to see whether the trimer exists in a preferentially nonpolar solvent, the complex constant for the formation of one mol of trimer was estimated by cryoscopic methods in cyclohexane with only 30 mg compound. The observed value was 1500 (mol fractions). Thus in a solution of 0-01 mol africanol per mol cyclohexane, 11% of the molecules occur as trimers.