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采用GC-MS联用技术对广西巴豆叶精油化学成份进行分析和鉴定,共分离出27个组份,鉴定其中的21种化合物,其含量占精油总量的94.75%.巴豆叶精油化学成份以2-甲基苯甲醛(24.75 %)、十六烷酸(17.77%)、叶绿醇(17.09%)、2-甲氧基-4-乙烯基苯酚(6.54%)、十五烷醛(5.56%)、亚麻酸(4.95%)为主. 相似文献
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Two new 2D coordination polymers of[M(Enox)_2]·C_2H_5OH(M=Zn,1 and Co,2;HEnox=1,4-dihydro-1-ethyl-6-fluoro-4-oxo-7-piperazine-1,8-naphtyridine-3-carboxylic acid)were synthesized under hydrothermal con-ditions.The single crystal X-ray diffraction analyses showed that 1 and 2 are isostructural.The Zn(Ⅱ)in 1 and Co(Ⅱ)ions in 2 are six-coordinated in an octahedral environment with an equatorial plane composed of four oxygen atoms:two of them from the 4-oxo and the other two from 3-carboxylate of two coordinated Enox ligands,forming a stablesix-membered chelating ring with the apical positions occupied by two N atoms of the piperazinyl rings.Thus,themolecules were self-assembled into a 2D neutral square grid with cavity dimensions of 1.3399 nm×1.3399 nm for1 and 1.3389 nm×1.3389 nm for 2,respectively.Compound 1 emits strong blue fluorescence on irradiation by UVlight in the solid state at room temperature. 相似文献
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Copper(Ⅱ) complexes Cu(C6H6N2)2(ClO4)2 (1) and Cu2(OAc)4(C5H5ClN2)2 (2) with amino-pyridine deriva-tives ligands have been synthesized and characterized by elemental analysis and IR spectrum. Their crystal struc-tures are determined by X-ray diffraction method. Compound 1, C12H16C12CuN4O8, Mr=478.73, triclinic, space group , a=0.7641(1)nm, b=0.7987(1)nm, c=0.7990(1)nm, α=106.78(1)°,β=95.71(1)°, γ=108.85(1)°, V=0.4317(1)nm3, Z=1, Dc=1.841g·cm-3, μ=1.627mm-1, F(000) =243,R1=0.0264, ωR2=0.0641 (I>2σ(I)). In 1, the center metal ion Cu(Ⅱ) possesses distorted octahedral geometry. Compound 2, C18H22C12Cu2N4O8, Mr=620.38,monoclinic, space group C2/c, a=1.9888(3), b=0.9158(1), c=1.4241(2)nm, β=115.89(1)°, V=2.3336(5)nm3, Z=4, Dc=1.766mg·cm-3, μ=2.104mm-1, F(000)=1256, R1=0.0263, wR2=0.0676 (I>2σ(I)). Compound 2 is dinuclear structure, in which each Cu(Ⅱ) adopts five-coordinated distorted square pyramid geometry. CCDC: 193109; 193110. 相似文献
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报道了二水合4,4′-偶氮二苯甲酸的晶体结构,C14H14N2O6,Mr=306.27,晶体属正交晶系,空间群为Pna21,晶胞参数:a=1.18197(15)nm,b=0.39432(5)nm,c=3.0967(4)nm,V=1.4433(3)nm^3,Z=4,Dc=1.409Mg/m^3,F(000):640,μ=0.112mm^-1,λ(MoKα)=0.071073nm,R1=0.0647 and wR2=0.1492,2758独立衍射点(I〉2σ(I)).晶体堆积通过苯环的π-π堆积和羧基与水的分子间氢键作用而稳定,形成超分子结构. 相似文献
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ICP-AES法测定广西产中药广豆根及千斤拔中的金属元素含量 总被引:4,自引:0,他引:4
采用湿法消解制样,运用ICP-AES法对广西产中药广豆根和千斤拔中的常最及微量金属元素的含量进行了测定.研究了仪器的工作条件,各元素的分析线和检测限,元素的含量平均值和标准差.结果表明广豆根中含Cu,Zn,Fe,Mn,Cr等微量金属元素和Ca,Mg,Na,K常量金属元素;千斤拔中含Cu,Zn,Fe,Ni,Mn,Cr等微量金属元素和Ca,Mg,Na,K常最金属元素;两者都不含Sn,Pb,Cd等对人体有害的元素.相对标准偏差值均小于5%.研究中还发现广豆根和千斤拔中Zn/Cu值分别为6.4和5.7左右,呈锌高铜低的现象,与癌症患者血清中锌低铜高的现象相反,而与抗癌中药中微量元素的含量锌高铜低的现象一致,这对理解这些抗癌中药的药理作用有一定的启示作用. 相似文献
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在甲醇中通过N-氧化吡啶-2-甲醛与苯肼反应得Schiff碱N-氧化吡啶-2-甲醛缩苯肼,并用单晶X射线衍射测定其结构,Schiff碱分子式为C12H13N3O2,相对分子质量231.25,晶体属正交晶系,Pbca空间群,晶胞参数:a=1.11327(16)nm,b=0.81406(12)nm,c=2.5782(4)nm,V=2.335(6)nm^2,Z=8,Dc=1.315g.cm^-2,μ=0.092mm^-1,F(000)=976,结构偏离因子R1=0.0389,wR2=0.1035,最佳吻合因子S=0.661,化合物分子通过氢键(O(1)…O(1W)0.2719nm,O(1)…O(1Wa)0.275nm)形成一维链状结构。 相似文献
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合成了一种新的稀土配合物Nd(Phen)2(NO3)3,化学式为C24H16N7NdO9,Mτ=690.68,晶体属于单斜晶系,Cc空间群,晶胞参数a=1.119
75(17)nm,b=1.807 3(3)nm,c=1.309 5(2)nm,β=100.584(3)°,V=2.605 1(7)nm3,Z=4,Dc=1.761
g/cm3,F(000)=1 364,μ=2.060 mm-1,λ(MoKa)=0.071 073 nm,R=0.018 7和wR=0.030 0,数据显示配位多面体为一个变形的反四方棱柱配合物,钕的配位数为十配位,4个氮原子和6个氧原子参与配位,4个Nd-N键长在0.258
4(4)nm到0.265 2 nm之间,6个Nd-O键长则在0.249 6(3)nm到0.260 3 nm之间. 相似文献