4-Hydroxy-2-methyl-3,4-diphenylcyclopent-2-en-1-one
نویسندگان
چکیده
The asymmetric unit of title compound, C(18)H(16)O(2), contains two mol-ecules with slightly different conformations. In the first mol-ecule, the two phenyl rings make dihedral angles of 84.98 (11)° and the five-membered ring makes dihedral angles of 84.80 (12) and 73.00 (12)° with the phenyl rings; the corresponding angles for the second mol-ecule are 86.74 (11), 81.20 (13) and 71.36 (12)°. O-H⋯O hydrogen bonds between the hy-droxy and carbonyl groups are a feature of the crystal packing, which results in chains extending parallel to [100]. Weak C-H⋯O and C-H⋯π inter-actions are also observed.
منابع مشابه
catena-Poly[[{bis[tetraaqua(2-hydroxy-3,4-dioxocyclobut-1-en-1-olato-κO 1)bariumstrontium(0.35/0.65)]di-μ-aqua}bis(μ-2-hydroxy-4-oxocyclobut-1-ene-1,3-diolato-κ2 O 1:O 3)] monohydrate]
The title structure, {[Ba(0.71)Sr(1.29)(C(4)HO(4))(4)(H(2)O)(10)]·H(2)O}(n), is built from dimers of edge-sharing monocapped square anti-prisms [(Ba/Sr)O(3)(H(2)O)(6)], in which barium and strontium are statistically disordered [ratio 0.353 (8):0.647 (8)] on the same crystallographic site. Such dimers are connected via bidentate hydrogen squarate groups [HC(4)O(4)](-), leading to chains that pr...
متن کاملCrystal structure of (2E)-1-(4-hydroxy-1-methyl-2-oxo-1,2-dihydroquinolin-3-yl)-3-(4-hydroxy-3-methoxyphenyl)prop-2-en-1-one
In the title compound, C20H17NO5, the dihedral angle between the mean plane of the di-hydro-quinoline ring system (r.m.s. deviation = 0.003 Å) and the benzene ring is 1.83 (11)°. The almost planar conformation is a consequence of an intra-molecular O-H⋯O hydrogen bond and the E configuration about the central C=C bond. In the crystal structure, O-H⋯O hydrogen bonds generate chains of mol-ecules...
متن کامل2,2′-[(4-Ethoxyphenyl)methylene]bis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-one)
In the title compound, C(25)H(32)O(5), the two cyclo-hexenone rings have envelope conformations with the C atom bearing two methyl groups as the flap atom in each ring. Relatively strong intra-molecular O-H⋯O hydrogen bonds are observed.
متن کامل2,2′-[(3-Bromo-4-hydroxy-5-methoxyphenyl)methylidene]bis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-one)
In the title compound, C(24)H(29)BrO(6), the dihedral angle between the cyclo-hexenone mean planes is 57.63 (2)° while the dihedral angles between the benzene ring and the cyclo-hexenone mean planes are 58.42 (2) and 69.08 (3)°. The two cyclo-hexenone rings both show an envelope conformation, with the C atom bearing two methyl groups as the flap atom in each ring. Two intra-molecular O-H⋯O hydr...
متن کامل3-Hydroxy-2-[(4-hydroxy-3,5-dimethoxyphenyl)(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)methyl]-5,5-dimethylcyclohex-2-en-1-one
In the title compound, C(25)H(32)O(7), the 3-hy-droxy-5,5-dimethyl-cyclo-hex-2-enone rings adopt slightly distorted envelope conformations with the two planes at the base of the envelope forming dihedral angles of 57.6 (4) and 53.9 (9)° with the benzene ring. There is an intra-molecular hy-droxy-ketone O-H⋯O inter-action between the two substituted cyclo-hexane rings as well as a short intra-mo...
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عنوان ژورنال:
دوره 66 شماره
صفحات -
تاریخ انتشار 2010