5-Chloro-5''-(4-chloro-benzyl-idene)-4'-(4-chloro-phen-yl)-1',1''-dimethyldi-spiro-[indoline-3,2'-pyrrolidine-3',3''-piperidine]-2,4''-dione.
The racemic title compound, C30H26Cl3N3O2, comprises two spiro links, the first connecting the piperidine and pyrrolidine rings and the other connecting the indole and pyrrolidine rings. The piperidine ring adopts a half-chair conformation, while the pyrrolidine ring has an envelope conformation with the unsubstituted C atom as the flap. The dihedral angles between the two p-Cl-substituted benzene rings and the indole ring are 33.13 (14) and 54.11 (14)°. In the crystal, mol-ecules form inversion dimers through pairs of N-H⋯O hydrogen bonds [graph set R 2 (2)(8)]. Aromatic C-H⋯O hydrogen bonds extend these dimers into a ribbon structure, enclosing R (2) 2(14) ring motifs, along the a-axis direction.
Crystallography Laboratory, Solid State Department, Physics Division, National Research Centre, Dokki, Giza 12622, Egypt.
I S Ahmed
IS
Farag
Pesticide Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt.
Adel S
AS
Girgis
Physics Department, Faculty of Science, Helwan University, Helwan, Cairo, Egypt.
A A
AA
Ramadan
Crystallography Laboratory, Solid State Department, Physics Division, National Research Centre, Dokki, Giza 12622, Egypt.
A M
AM
Moustafa
Crystallography Laboratory, Solid State Department, Physics Division, National Research Centre, Dokki, Giza 12622, Egypt.
Ahmed F
AF
Mabied