1-Ethyl-5-iodoindoline-2,3-dione
نویسندگان
چکیده
There are two independent mol-ecules in the asymmetric unit of the title compound, C10H8INO2, which differ in the degree of planarity. The iodo-indoline-2,3-dione skeleton of mol-ecule 1 is essentially planar [mean deviation = 0.003 (2) Å for the nine non-H atoms of the indoline core, with a maximum deviation of 0.033 (1) Å for the I atom]. The I atom and O atom in the 3-position of mol-ecule 2 deviate by 0.195 (1) and 0.120 (2) Å, respectively, from the least-squares plane through the nine non-H atoms of the indoline core. Mol-ecules 1 and 2 are roughly coplanar, the mean planes through their cores making a dihedral angle of 6.84 (1)°. This coplanarity results in a layer-like structure parallel to (6,11,17) in the crystal, the distance between adjacent least-squares planes through the cores of mol-ecules 1 and 2 being 3.37 (1) Å. In such a layer, mol-ecules 1 and 2 are linked by C-H⋯O hydrogen bonds, forming chains along [11-1]. The chains are further coupled to construct a kind of double-chain structure via I⋯O inter-actions [3.270 (2) Å].
منابع مشابه
1-(3-Chlorobenzyl)-5-iodoindoline-2,3-dione
In the title compound, C(15)H(9)ClINO(2), which possesses anticonvulsant activity, the iodo-indoline ring system is essentially planar (maximum deviation 1.245 Å) and is oriented with respect to the 3-chloro-benzyl ring at a dihedral angle of 76.59 (3)°. In the crystal, there is a π-π contact between iodo-indoline ring systems [centroid-centroid distance = 3.8188 (4) Å].
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