Spontaneous resolution and crystal structure of (2<i>S</i>)-2-(3-nitrophenyl)-3-phenyl-2,3,5,6-tetrahydro-4<i>H</i>-1,3-thiazin-4-one; crystal structure of <i>rac</i>-2-(4-nitrophenyl)-3-phenyl-2,3,5,6-tetrahydro-4<i>H</i>-1,3-thiazin-4-one
Acta crystallographica. Section E, Crystallographic communications