نتایج جستجو برای: 4 one
تعداد نتایج: 3010772 فیلتر نتایج به سال:
In the title compound, C(14)H(9)BrN(2)O, the quinazoline unit is essentially planar, with a mean deviation of 0.058 (2) Å from the least-squares plane defined by the ten constituent ring atoms. The dihedral angle between the mean plane of the quinazoline ring system and the 4-bromo-phenyl ring is 47.6 (1)°. In the crystal, mol-ecules are linked by inter-molecular C-H⋯N and C-H⋯O hydrogen bonds,...
In the title compound, C(10)H(12)O(2), the substituted benzene ring is inclined at a dihedral angle of 75.9 (1)° to the almost planar butan-2-one substituent (r.m.s. deviation = 0.02 Å). In the crystal, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains along the a axis.
In the title compound, C16H11NO4, the dihedral angle between the ten-membered chromen-4-one ring system (r.m.s. deviation = 0.0095 Å) and the benzene ring is 86.16 (5)°. In the crystal, mol-ecules are linked into a three-dimensional network by weak C-H⋯O hydrogen bonds. The crystal studied was a non-merohedral twin, with the minor twin component refining to 0.093 (1).
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