Download citation
Download citation

link to html
In the three spiro­acenaphthylene structures 5′′-[(E)-2,3-dichloro­benzyl­idene]-7′-(2,3-dichloro­phenyl)-1′′-methyldispiro­[ace­naphthyl­ene-1,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,3′′-piperidine]-2,4′′-dione, C35H26Cl4N2O2S, (I), 5′′-[(E)-4-fluoro­benzyl­idene]-7′-(4-fluoro­phenyl)-1′′-methyldispiro­[acenaphthyl­ene-1,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,3′′-piperidine]-2,4′′-dione, C35H28F2N2O2S, (II), and 5′′-[(E)-4-bromo­benzylidene]-7′-(4-bromo­phenyl)-1′′-methyldispiro­[ace­naphthylene-1,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,3′′-piperidine]-2,4′′-dione, C35H28Br2N2O2S, (III), the substituted aryl groups are 2,3-dichloro-, 4-fluoro- and 4-bromo­phenyl, respectively. The six-membered piperidine ring in all three structures adopts a half-chair conformation, the thia­zolidine ring adopts a slightly twisted envelope and the pyrrolidine ring an envelope conformation; in each case, the C atom linking the rings is the flap atom. In all three structures, weak intra­molecular C—H...O inter­actions are present. The crystal packing is stabilized through a number of inter­molecular C—H...O and C—H...X inter­actions, where X = Cl in (I) and F or S in (II), and C—H...O inter­actions are observed predominantly in (III). In all three structures, mol­ecules are linked through centrosymmetric ring motifs, further tailored through a relay of C—H...X [Cl in (I), Br in (II) and O in (III)] inter­actions.
Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds