2-(5-Fluoro-2,3-dioxoindolin-1-yl)ethyl 4-methyl­piperazine-1-carbodithio­ate

In the title compound, C₁₆H₁₈FN₃O₂S₂, the methyl­piperazine ring adopts a chair conformation, while the (2,3-dioxoindolin-1-yl)ethyl unit is linked to one of the N atoms of the piperazine ring via the carbodithio­ate group. In the crystal, each mol­ecule is linked to its neighbors within the (03) plane through weak C—H(methyl­ene)...O, C—H(ar­yl)...O and C—H(methyl­ene)...S inter­actions. Perpendicular to this plane mol­ecules are connected through inter­molecular short N...π(pyrrole ring) contacts [N...C centroid = 3.232 (2) Å], another set of C—H(methyl­ene)...O inter­actions and through short contacts between carbodithio­ate S atoms and the pyrrole rings [C...centroid = 3.695 (3), S...centroid = 3.403 (2) Å].

5-Methyl-3,3-bis­(morpholin-4-yl)-1-[2-(morpholin-4-yl)eth­yl]-2,3-dihydro-1H-indol-2-one

In the title compound, C₂₃H₃₄N₄O₄, the morpholine rings adopt chair conformations. The N atom of the indol-2-one group is linked to the N atom of one morpholine ring through a flexible ethyl group with an almost cif conformation. In the crystal, molecules are linked by C—H...O interactions into infinite chains along the c direction. The almost parallel infinite chains are further inter­connected via other sets of C—H...O inter­actions, forming a three-dimensional framework.

5-Methyl-3,3-bis­(4-methyl­piperazin-1-yl)-1-[2-(4-methyl­piperazin-1-yl)eth­yl]indolin-2-one

In the title compound, C₂₆H₄₃N₇O, each piperazine ring adopts a chair conformation. Two 1-methyl­piperazine rings bond to one Csp³ of the pyrrole ring via the piperazine N atoms, while the third one links to the N atom of the indolin-2-one unit through a flexible ethyl group with an almost syn conformation. In the crystal, mol­ecules are connected through methyl­ene–carbonyl C—H...O inter­actions into an infinite chain along the c axis. The almost parallel arrays are stacked, forming a three-dimensional framework.