The molecular and supramolecular structures of four 1,5,6,10b‐tetrahydropyrazolo[1,5‐c]quinazolines |
| |
Authors: | John Nicolson Low Justo Cobo Manuel Nogueras Adolfo Snchez Harlen Torres Braulio Insuasty |
| |
Institution: | John Nicolson Low,Justo Cobo,Manuel Nogueras,Adolfo Sánchez,Harlen Torres,Braulio Insuasty |
| |
Abstract: | The supramolecular structures of the title compounds, 2‐phenyl‐5‐p‐tolyl‐1,5,6,10b‐tetrahydropyrazolo1,5‐c]quinazoline, C23H21N3, (I), 5‐(4‐bromophenyl)‐2‐phenyl‐1,5,6,10b‐tetrahydropyrazolo1,5‐c]quinazoline, C22H18BrN3, (II), 2‐(4‐chlorophenyl)‐5‐phenyl‐1,5,6,10b‐tetrahydropyrazolo1,5‐c]quinazoline, C22H18ClN3, (III), and 5‐(4‐bromophenyl)‐2‐(4‐chlorophenyl)‐1,5,6,10b‐tetrahydropyrazolo1,5‐c]quinazoline, C22H17BrClN3, (IV), are of two general types. Compounds (I), (II) and (III) form base‐paired dimers via N—H?N hydrogen bonds, where (I) and (II) are isomorphous, while in (IV), there are no conventional hydrogen bonds. |
| |
Keywords: | |
|
|