Crystal structures of 1-benzene­sulfon­yl-2-methyl-3-(4-nitro­benzoyl)-2,3-di­hydro-1H-indole and 1-benzene­sulfon­yl-2-methyl-3-[(thio­phen-2-yl)carbon­yl]-2,3-di­hydro-1H-indole

In the title indole derivatives, C(22)H(16)N(2)O(5)S, (I) and C(20)H(15)NO(3)S(2), (II), the sulfonyl-bound phenyl rings are almost orthogonal to the indole ring system, subtending dihedral angles of 88.33 (10) and 87.58 (16)°, respectively. In both compounds, the sulfonyl S atom has a distorted tetra­hedral geometry [O—S—O = 119.98 (9) and N—S—C = 104.01 (8)° for compound (I) and O—S—O = 120.08 (18) and N—S—C = 104.91 (14)° for compound (II)] and the sum of the bond angles at N indicates sp (2) hybridization. The mol­ecules of both (I) and (II) feature intra­molecular C—H⋯O hydrogen bonds that generate S(6) ring motifs with the sulfone O atom. In the crystals, mol­ecules of (I) are linked by C—H—O hydrogen bonds, forming R (4) (4)(18) ring motifs while mol­ecules of (II) are linked by C—H—O and C—H—S hydrogen bonds, forming R (2) (2)(12) ring motifs. Compound (II) was refined as an inversion twin.