共查询到20条相似文献,搜索用时 15 毫秒
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3,3,6,6-四甲基-9-(3,4-亚甲二氧基苯基)-1,8-二氧代-2,3,4,5,6,7-六氢夹氧蒽的合成和晶体结构 总被引:3,自引:0,他引:3
标题化合物C24H26O5是由胡椒醛、达咪酮在微波辐射下反应而得,反应在5分钟内完成。结构通过单晶 X-射线衍射法测定,其晶体属三斜晶系,空间群P, a = 7.1338(1), b = 10.4406 (3), c = 14.3323(4) , a = 82.56(1), b = 89.37(1), g = 78.94(1), V = 1038.73(4) 3, Mr = 394.45, Z = 2, Dc = 1.261 g/cm3, l = 0.71073 ? m(MoKa) = 0.088 mm-1, F(000) = 420, R = 0.0648, wR = 0.1588。在分子结构中吡喃环为船式构象,2个的环己酮环为信封式结构。 相似文献
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《结构化学》2016,(3)
A series of 10-substituted 9-aryl-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-dione derivatives 2 were synthesized by a two-step reaction.All the compounds were characterized by IR,MS,and ~1H NMR.Crystals of 1a and 2c were obtained and determined by X-ray single-crystal diffraction.Crystal data of 1a:C_(20)H_(22)O_5,orthorhombic system,space group Pbcn,a = 15.8888(19),b = 18.228(2),c = 11.6926(13) ?,V = 3386.4(7) ?~3,Z = 8,F(000) = 1456,Dc = 1.343 g/cm~3,R = 0.0456 and w R = 0.1600.Crystal data of 2c:C_(26)H_(24) Cl NO_3,monoclinic system,space group P2_1/n,a = 8.628(2),b = 10.912(3),c = 22.425(7) ?,β = 90.786(4)°,V = 2111.1(10) ?~3,Z = 4,F(000) = 912,D_c = 1.365 g/cm~3,R = 0.0613,and w R = 0.1196.The results of biological experiments show that compounds 2b and 2c could inhibit the proliferation of Hep G2 cells. 相似文献
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The title compound 9-(2-hydroxy-5-nitrophenyl)-9H-dibenzo[c,h]-2,7,10-trioxan-thene-1,8-dione DMF solvate (C28H20N2O9,Mr=528.46) was synthesized and crystallized.The crystal belongs to the triclinic system,space group P1 with a=10.210(3),b=10.698(4),c=12.522(4),α=92.214(6),β=113.751(5),γ=105.040(5)°,Z=2,V=1193.0(7)3,Dc=1.471 g·cm-3,μ(MoKα)=0.112 mm-1,F(000)=548,R=0.0444 and wR=0.1141 for 2667 observed reflections (I 2σ(I)).X-ray analysis reveals that atoms C(1),C(2),C(3),C(4),C(5) and O(1) on the new 4H-pyran ring are slightly distorted,forming a half-chair conformation. 相似文献
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3,3,6,6-四甲基-9-对氯苯基-1,8-二氧代-2,3,4,5,6,7-六氢氧杂蒽的合成和晶体结构 总被引:2,自引:0,他引:2
标题化合物C2 3H2 5O3Cl是由对氯苯甲醛与 5,5 二甲基 1 ,3环己二酮在乙二醇中反应而得。结构通过单晶X 射线衍射法测定 ,其晶体属于单斜晶系 ,空间群P2 1 /n ,a =6.0 4 8(1 ) ,b =1 9.543(3) ,c =1 7.42 0 (3) ,β =97.2 9(1 )° ,V =2 0 4 2 .2 (6) 3,Mr=384.90 ,Dc=1 2 52 g/cm3,Z =4,μ(MoKα) =2 .0 6cm- 1 ,F(0 0 0 ) =81 6。晶体结构用直接法解出 ,经用全矩阵最小二乘法对原子参数进行修正 ,最终的偏离因子为R =0 .0 39,Rw=0 .0 4 7。X 射线衍射分析表明 :平面 1 (C(8) -C(9) -C(1 9) )与平面 2 (C(1 0 ) -C(1 1 ) -C(1 2 ) )之间的两面角为1 6.2 4° ;平面 1与平面 3(C(7) -C(8) -C(9) )之间的两面角为 1 77.37° ;平面 1与平面 4(C(1 )-C(5) -C(6) )之间的两面角为 98.2 1°;平面 2与平面 3之间的两面角为 1 61 .1 2° ;平面 2与平面 4之间的两面角为 81 .98°;平面 3与平面 4之间的两面角为 79.1 5° 相似文献
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邻硝基苯基荧光酮化学发光性能和机理研究 总被引:7,自引:1,他引:7
研究了在碱性介质中金属离子催化邻硝基苯基荧光酮(o-NPF)-H2O2体系的化学发光行为。结果表明,在研究的20多种金属离子中,只有Co2+离子对o-NPF-H2O2体系有较强的催化发光作用,Co2+的浓度与发光强度在2.5×10-9~3.0×10-6g/mL范围内呈良好的线性关系。通过对化学发光光谱、荧光光谱的研究以及用Huckel分子轨道法(HMO)计算了o-NPF的π电子分布和键级,提出了o-NPF可能的化学发光机理. 相似文献
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应用反相高效液相色谱法,分离和鉴定3,4,6,7,9,10-6H-3,3,6,6-四甲基-9-对硝基苯基吖啶-1,8-二酮(化合物Ⅰ),分离系统包括Zorbax SB C18及苯基柱,紫外检测器检测波长为285nm,等比和线性梯度淋洗,液相色谱-质谱联用和光导二极和列检测系统被用来鉴定主要化合物及其它杂质,此方法可达到分离效果好,灵敏度高。 相似文献