共查询到20条相似文献,搜索用时 62 毫秒
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三乙醇胺催化合成正丁基苯基醚 总被引:8,自引:0,他引:8
采用3.0g三乙醇胺为相转移催化剂,在6.0g氢氧化钠,1.0ml水存在下,将0.1mol苯九0.2mol溴丁流反应2.0h,得正丁基苯基醚,收率为92.0%。 相似文献
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报道了以相转移催化法合成一类新有机试剂-三乙氨基胺类树型配体N,N′,N″-(三苄基)-三乙氨基胺(TBAA)和N,N′,N″-(三苯甲酰)-三乙氨基胺(TBOAA),产率85%以上。此类化合物具有近似三角架形结构,能产生荧光,可以与稀土离子进行选择性配位。 相似文献
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N—(2—甲基—4—硝基苯基)哌啶的相转移催化合成 总被引:1,自引:0,他引:1
2-氯-5-硝基甲苯与哌啶的亲核取代反应,在130℃的油浴中,反应9.5h,收率仅5.O%;而在相转移催化剂聚苯乙烯固载聚乙二醇400和氟化钠、氯化亚铜存在下,在150℃的油浴中,反应3.8h即生成标题化合物。收率可达65.07%。其结构已经红外光谱、核磁共振和元素分析证实。并探讨了反应过程的机理。 相似文献
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吡啶氧丁氧苯基三甲氧苯基卟啉及其Fe(Ⅲ)配合物的合成与表征 总被引:3,自引:1,他引:3
报道了一种新型尾式卟啉化合物 - 5 -对 [4- (间吡啶氧基 )丁氧基 ]苯基 - 1 0 ,1 5 ,2 0 -三对甲氧苯基卟啉及其 Fe( )配合物的合成。并通过元素分析、红外光谱、核磁共振光谱及紫外可见光谱等对其结构进行了表征 相似文献
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μ-氧-双[三(邻氯苄基)锡]与4-吡啶甲酸在苯溶剂中反应合成,合成了标题化合物。经X-射线方法测定了新化合物的晶体结构。晶体结构属单斜晶系,空间群为P2(1)/n,晶体学参数:a=0.8844(3)nm,b=1.8931(6)nm,c=1.5387(5)nm,β=92.266(5)°,V=2.5741(14)nm3,Z=4,Dx=1.593Mg.m-3,μ(MoKα)=13.29cm-1,F(000)=1232,R1=0.0377,wR2=0.0936。配合物通过4-吡啶甲酸配体的氮原子桥联,形成五配位的三角双锥构型的链状结构。 相似文献
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咪唑(IMI)与硝酸镍反应,得到硝酸六咪唑合镍配合物,并培养出单晶。元素分析、红外光谱、X射线单晶衍射等分析表明,该晶体属于单斜晶系,空间群为P21/n,晶胞参数a=1.235 0(3)nm,b=1.235 0(3)nm,c=1.480 0(3)nm,β=90.579(2)°,V=1.955 0(7)nm3,Dc=1.491 g/cm3,Z=4,F(000)=900,R1=0.034 4,wR2=0.095 5。该化合物的分子式为[Ni(IMI)6](NO3)2,是由6个咪唑分子直接与二价镍离子配位,硝酸根离子结合形成的配合物。 相似文献
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通过2,4-二硝基咪唑(2,4-DNI)的钠盐水溶液与硝酸铅的水溶液反应,制备出了2,4-二硝基咪唑铅配合物;采用自然挥发法培养出了适于X光结构测定的单晶,X射线衍射测定结果为,晶体属单斜晶系,空间群为Cc,晶体学参数为:a=6.517(3)×10-1nm,b=17.131(6)×10-1nm,c=14.082(7)×10-1nm,α=90.00(3)°,β=97.80(4)°,γ=90.00(4)°,V=1 557.5(12)×10-3nm3,Z=4,Dc=2.531 g/cm3,μ=11.001 mm-1,F(000)=1 120,最后偏离因子R为0.022 6。根据红外光谱、元素分析和X射线衍射分析结果,确定了2,4-二硝基咪唑铅配合物的化学组成为C6H10O12N8Pb,分子结构式为[Pb(DNI)2(H2O)4]。 相似文献
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A facile synthesis of phosphorus-containing trifunctional cycloaliphatic epoxide resin, tri(3,4-epoxycyclohexylmethyl) phosphate (TECP), used for cationically UV curing coatings as a reactive-type flame retardant, was proposed. The molecular structure was confirmed by FTIR, 1H NMR and 31P NMR spectroscopic analysis. A series of flame retardant formulations by incorporating into a commercial difunctional cycloaliphatic epoxide resin, CYRACURE™ UVR-6110, were prepared, and exposed to a medium pressure lamp to form the cured films under the presence of diaryliodonium hexafluorophosphate salt as a cationic photoinitiator. Their flame retardancy examined by the limiting oxygen index showed the improvement up to 27 for 50 wt% TECP addition compared with 21 for pure UVR-6110. The Ts and Tg decreased from 86 °C and 131 °C to 55 °C and 91 °C, respectively, by using dynamic mechanical thermal analysis, whereas the tensile strength showed a slight increase (11%) with 50 wt% TECP addition. The thermogravimetric analysis (TGA) and real-time Fourier transform infrared spectroscopy (RT-FTIR) measurement demonstrated the condensed-phase flame retardant mechanism. 相似文献
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用μ-氧-双[三(邻溴苄基)锡]与3-吲哚丙烯酸反应,合成了三(邻溴苄基)锡3-吲哚丙烯酸酯。通过元素分析、IR和经X-射线单晶衍射分析表明,该化合物属单斜晶系,空间群C2/c,晶胞参数a=1.67879(17)nm,b=1.18439(12)nm,c=3.2527(3)nm,β=91.076(2)°,V=6.4664(11)nm3,Z=8,Dc=1.674g/cm3,μ(MoKα)=4.525cm-1,F(000)=3168,R1=0.0653,wR2=0.2186;在化合物中Sn—C键长分别为0.2140(8),0.2155(8)和0.2185(8)nm,Sn—O键为0.2050(5)nm,中心锡与亚甲基碳和氧原子构成畸型四面体。对其结构进行量子化学从头计算,探讨了化合物的稳定性、分子轨道能量、原子净电荷布居规律以及一些前沿分子轨道的组成特征。 相似文献
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The crystal structure of poly(2,6-naphthalenebenzobisthiazole) (Naph-2,6-PBT) was studied using X-ray and molecular modeling methods. The X-ray pattern of the annealed Naph-2,6-PBT fiber showed several Bragg reflections as well as streaks along the layer lines indicating that the registry between adjacent chains exists in the crystal with a great deal of axial disorder. Disordered structure in the crystal was fitted into the triclinic unit cell with the unit cell parameters of a=6.78 Å, b=3.46 Å, c=14.61 Å, α=88.0°, β=114.7°, and γ=94.8° with space group. The calculated density, 1.68 g/cm3 was comparable with the observed density, 1.56 g/cm3. The Δc/c (staggering ratio) representing the registry between the adjacent chains in the ac plane was −0.19, which is in good agreement with the energy calculation although another local energy minimum was found at Δc/c=0.31. The disordered structure in Naph-2,6-PBT was probably due to the discrete axial shift between Δc/c=0.31 and −0.19 in the ac plane. The LALS refinement showed that the naphthalene group was rotated by 9 (±3)° from the ac plane on the projected structure along the chain axis with a torsion angle between the naphthalene and benzobisthiazole rings of 23°. 相似文献
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由2,4-二叔丁基酚与PCl3在二甲苯溶剂中反应合成了亚磷酸三(2,4-二叔丁基苯基)酯,其分子式为C42H63O3P.通过Nonius CAD4型X-射线衍射仪检测,其晶体结构测定结果如下:该晶体属于三斜晶系,P-1空间群,a=1.329 9(3)nm,b=1.350 3(3)nm,c=1.385 2(3)nm,α=112.20(3)°,β=104.66(3)°,γ=102.31(3)°,Dc=1.027 g/cm3,Z=2,F(000)=708,μ=0.098 mm-1,最终偏差因子分别为R=0.096 5,wR=0.245 0.X-射线衍射分析表明,分子内部分相邻原子间形成C—H…O氢键. 相似文献
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基于2-(2-1羟苯基)苯并咪唑(HPBI)在生物学、药理学及光电材料等方面的性质和应用意义,查阅大量文献,报道了配体HPBI新颖的合成方法,采用单晶衍射进行表征,并进行了该配体的晶体结构测定.结果表明,晶体属于单斜晶系,空间群P2(1),晶胞参数:α=3.8541(10)A°,b=2.2170(6)A°,c=5.86... 相似文献