Crystal and molecular structure of 1-phenyl-3-(2-hydroxyphenylamino)-2-buten-1-one, C16H15NO2
作者:Tadeusz Głowiak、Jarosław M. Sobczak
DOI:10.1007/bf01160984
日期:1992.12
Orange, yellow, and colorless crystals were obtained for the title compound. The orange crystals are triclinic, space group P1BAR, a = 9.181(2), b = 10.734(2), c = 15.245(3) angstrom, alpha = 73.06(2), beta = 79.21(2), chi = 67.83(2)-degrees, V = 1325.9(5)angstrom3, Z = 4. Two different symmetry-independent molecules (molecule A and B) were determined in the crystal unit. The conformation of A is stabilized by an intramolecular H bond from the amino NH to the keto and phenolic O atoms [1.89(2) and 2.38(2)angstrom, respectively]. The conformation of B is stabilized by only one intramolecular H bond, from the amino NH to the keto O atom [1.925(2)angstrom]. The colorless crystals (molecule C) are monoclinic, spacegroup P2(1)/n, a = 11.883(3), b = 11.004(3), c = 10.053(3)angstrom, beta = 95.93(3)-degrees, V = 1307.5(6)angstrom3, Z = 4. This conformation is stabilized by one intramolecular H bond, the same as in B, with N-H ... O, 1.84(3)angstrom. An intermolecular H bond is observed for A, B, and C, O-H ... O, 2.634(2), 2.640(2), and 2.697(2)angstrom, respectively. The yellow crystals are adducts with ethanol (H-1 NMR, infrared and GC measurements).