10-(4-Chlorophenyl)-7-methyl-5,6-dihydrobenzo[<i>h</i>]pyrazolo[5,1-<i>b</i>]quinazoline and 2-(4-chlorophenyl)-5-methyl-6,7-dihydrobenzo[<i>h</i>]pyrazolo[1,5-<i>a</i>]quinazoline: isomeric molecules linked into hydrogen-bonded dimers or π-stacked chains
Acta crystallographica. Section C, Crystal structure communications/Acta crystallographica. Section C, Crystal structure communications.