Acta Crystallographica Section C

Crystal Structure Communications

Volume 61, Part 11 (November 2005)

organic compounds

jz1757 scheme

Acta Cryst. (2005). C61, o648-o651 [doi:10.1107/S0108270105031902]

Supramolecular structures of three isomeric 4-(methylphenylamino)pyridine-3-sulfonamides

N. Kosutic Hulita, A. Danilovski, D. Filic, M. Marinkovic, E. Mestrovic and M. Dumic

Abstract: The structures of the three title isomers, namely 4-(2-methylanilino)pyridine-3-sulfonamide, (I), 4-(3-methylanilino)pyridine-3-sulfonamide, (II), and 4-(4-methylanilino)pyridine-3-sulfonamide, (III), all C₁₂H₁₃N₃O₂S, differ in their hydrogen-bonding arrangements. In all three molecules, the conformation of the 4-aminopyridine-3-sulfonamide moiety is conserved by an intramolecular N-HO hydrogen bond and a C-HO interaction. In the supramolecular structures of all three isomers, similar C(6) chains are formed via intermolecular N-HN hydrogen bonds. N-HO hydrogen bonds lead to C(4) chains in (I), and to R₂²(8) centrosymmetric dimers in (II) and (III). In each isomer, the overall effect of all hydrogen bonds is to form layer structures.

Formula: Three isomers of C₁₂H₁₃N₃O₂S


	Structure factor file (CIF format) (187.6 kbytes) Contains datablock I

	Structure factor file (CIF format) (164.0 kbytes) Contains datablock II

	Structure factor file (CIF format) (180.7 kbytes) Contains datablock III

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