Synthesis and Crystal Structure of 3,6-Dimethyl-9-(4-bromophenyl)-1,8-oxo-2,7,10-trioxanthene

• 作 者: 刘波 李卓宁 张小燕 林菊香 高原
• 机 构: College of Chemistry and Chemical Engineering Shenzhen University,College of Chemistry and Chemical
• 出 处: 结构化学
• 发表日期: 2007年11期
• 关键词: conjugated monoclinic hydroxide refinement diffractometer permeability anhydride

The crystal structure of the title compound (C19H13BrO5) has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic,space group P21/c,with a=10.508(4),b=11.354(4),c=14.522(5),β=106.255(4)°,V=1663.4(10)3,Mr=401.20,Z=4,Dc=1.602 g/cm3,λ=0.71073,F(000)=808,μ= 2.498 mm-1,R=0.0337 and wR=0.0837 for 2200 observed reflections (I>2σ(I)). X-ray analysis reveals that the dihedral angles between planes 1 and 2,1 and 3,1 and 4,2 and 3,2 and 4,and 3 and 4 are 78.6,82.5,87.4,5.6,9.5 and 4.9°,respectively. There exists a conjugated system in the molecular structure.

The crystal structure of the title compound (C19H13BrO5) has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic space group P21 / c with a = 10.508 (4), b = 11.354 = 14.522 (5) β, β = 106.255 (4) °, V = 1663.4 (10) 3, Mr = 401.20, Z = 4, Dc = 1.602 g / cm3, λ = 0.71073, F (000) = 808 , μ = 2.498 mm-1, R = 0.0337 and wR = 0.0837 for 2200 observed reflections (I> 2σ (I)). X-ray analysis reveals that the dihedral angles between planes 1 and 2,1 and 3,1 and 4 , 2 and 3, 2 and 4, and 3 and 4 are 78.6, 82.5, 87.4, 5.6, 9.5 and 4.9 °, respectively. There exists an conjugated system in the molecular structure.