J. Fábry
Mar 18, 2016
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Journal
Acta Crystallographica Section E: Crystallographic Communications
Abstract
The title structure, 2-amino-4,6-dimethoxypyrimidine-(μ2-hydrogen)-4-aminobenzoate, has been redetermined from the data published by Thanigaimani, Muthiah & Lynch [Acta Cryst. (2006), E62, o2976–o2978]. The improvement of the present redetermination consists in a released geometry of the primary amine groups, which were originally been assumed as planar, as well as in a redetermination of the position of the hydroxy H atom. This H atom, whose parameters were originally constrained, turns out to be situated about the centre of the O⋯N hydrogen bond in two disordered positions, each with 0.5 occupancy.