Open AccessA monoclinic polymorph of 3,7,7‐trimethyl‐1‐phenyl‐5,6,7,8‐tetrahydro‐1 H ‐pyrazolo[3,4‐ b ]quinolin‐5‐one
Author(s) -
Mera Jaime,
Quiroga Jairo,
Cobo Justo,
Low John N.,
Glidewell Christopher
Publication year - 2005
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270105016501
Subject(s) - monoclinic crystal system , stacking , hydrogen bond , crystallography , chemistry , stereochemistry , materials science , crystal structure , molecule , organic chemistry
A second, monoclinic, polymorph of the title compound, C 19 H 19 N 3 O, is reported. In this polymorph, the molecules are linked into chains by paired C—H⋯π hydrogen bonds and the chains are linked into sheets by π stacking interactions.