4,7-Dichloro-1H-indole-2,3-dione

Abstract

The title compound, C 8 H 3 Cl 2 NO 2 , has a single near-planar molecule in the asymmetric unit, with the non-H atoms having a mean deviation from planarity of 0.042 Å . In the crystal, the molecules dimerize through two N-HÁ Á ÁO hydrogen bonds. The molecules are further linked through slippedinteractions that propagate along the a axis [inter-centroid distance = 3.8639 (10) Å , interplanar distance = 3.3478 (10) Å and slippage = 1.9292 (15) Å ].

Crystal structure of 5-(3-methoxyphenyl)indoline-2,3-dione

“…Therefore, the structure motifs of isatin derivatives are diverse, compared to other small rigid molecules. It forms H-bonded centrosymmetric dimers (Golen and Manke, 2016), two types of chains (N1–H⋯O1 (Wei et al, 2010) and N1–H⋯O2 (Manley-King et al, 2011)) and cyclic tetramers with Z ′ = 2 (Mohamed et al, 2008).…”