Dc. Dao et G. Ferguson, (3AS(ASTERISK),9BS(ASTERISK))-(+ RO-2,9B-DIMETHYLTHIAZOLO[5,4-C]QUINOLIN-4(5H)-ONE/, Acta crystallographica. Section C, Crystal structure communications, 51, 1995, pp. 1823-1825
The stereochemistry of the title compound, C12H12N2-OS, is established
as cis. There are two very similar independent molecules in the asymm
etric unit. The five-membered rings have envelope conformations and th
e six-membered hetero-rings are in skew-boat conformations. The molecu
les are linked by N-H ... O hydrogen bonds with N ... O distances in t
he range 2.996 (2)- 3.114 (2) Angstrom.