The Knoevenagel product of indolin‐2‐one and ferrocene‐1,1′‐dicarbaldehyde
Indolin‐2‐one (oxindole), (I), undergoes a Knoevenagel condensation with ferrocene‐1,1′‐dicarbaldehyde, (II), to afford the title complex 3,3′‐[(E,E)‐ferrocene‐1,1′‐diyldimethylidyne]diindolin‐2‐one dichloromethane disolvate, [Fe(C28H20N2O2)]·2CH2Cl2, (IV). The structure of (IV) contains two ferrocene complex molecules in the asymmetric unit and displays, as expected, intermolecular hydrogen bonding (N—H...O=C) between the indolin‐2‐one units. Intermolecular π–π stacking interactions are also observed.
No Supplementary Data
No Article Media
Document Type: Research Article
Publication date: July 15, 2011