2-[(trifluoroacetyl) amino] benzoquinone and the hydrochloride and perchlorate salts of 2-aminohydroquinone

摘要

Hydrogen bonding parameters for the title materials are reported. 2[( trifluoroacetyl) amino] benzoquinone crystallizes in the monoclinic space group P2(1)/c, with a - 18.195(4), b = 5.110(1), c = 9.635(2), beta = 104.22(3)degrees, V = 868.4(3) Angstrom(3), and Z = 4. This compound exhibits two weak intramolecular hydrogen bonds. The first is between a hydrogen atom of the quinone ring and the carbonyl oxygen of the trifluoroacetamide group; it has a distance of 2.24 Angstrom and a C-H...O angle of 122degrees. The second is between the hydrogen atom of the trifluoroacetamide group and a quinone carbonyl group; it has a distance of 2.26 Angstrom and a N-H...O angle of 107degrees. 2-Aminohydroquinone hydrochloride crystallizes in the orthorhombic space group Pca2(1), with a = 16.220(3), b = 5.211(1), c = 8.719(2), V = 737.0(2) Angstrom(3), and Z = 4. 2-Aminohydroquinone perchlorate crystallizes in the orthorhombic space group P2(1)2(1)2(1), with a = 7.110(1), b = 7.139(1), c = 18.043(4), V = 915.8(3) Angstrom(3), and Z = 4. All active hydrogens of the two salts exhibit intermolecular hydrogen bonds that serve to organize a three-dimensional framework for each case. [References: 12]