C. Glidewell, J. N. Low, S. A. McWilliam
Feb 15, 2002
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Journal
Acta crystallographica. Section C, Crystal structure communications
Abstract
In 2-trifluoromethyl-4-nitroaniline, C(7)H(5)F(3)N(2)O(2), (I), the molecules lie across a mirror plane in space group Pnma. The molecules are linked by paired N-H...O hydrogen bonds to form a C(8)[R(2)(2)(6)] chain of rings, pairs of which are linked into a molecular ladder by a single C-H...O hydrogen bond. The isomeric 3-trifluoromethyl-4-nitroaniline, (II), has Z' = 2 in space group P2(1)/c. Each molecule is linked to four others by N-H...O hydrogen bonds to form sheets built from alternating R(4)(4)(12) and R(4)(4)(32) rings.