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本文通过2-苯基-3-N,N-二烷基氨基苯噻唑并[2,3,d]-2,3-二氢-1,2,4,3-三唑磷茂啉(1)与酚和醇的反应合成了三稠环系三唑磷茂啉的两个新的系列化合物2a~2f和3a~3j.测定了这十六个新磷杂环化合物的IR, ^3^1P, ^1^3C和^1H NMR以及2a的MS和X-ray数据,初步解析了它们的结构。 相似文献
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1,3-二氯四甲基二硅氧烷相继与环戊二烯基钠、钠砂及MCl4反应, 制得标题化合物: O(SiMe2)2(C5H4)2MCl2(1, M=Ti; 2, M=Zr; 3, M=Hf)。考察了1的卤素置换反应: 1与(NH4)2SiF6作用生成相应的二氟化物4, 4与氢溴酸作用生成相应的二溴化物5, 经元素分析, UV, ^1H(^1^3C)NMR和MS表征了它们的结构, 并利用X射线衍射法测定了2和3的晶体和分子结构。化合物1,2和3的有关结构数据比较表明, 由于中心金属的不同而引起其键长和键角的差异与其碳桥类似物(CH2)3(C5H4)2MCl2的情况相似。 相似文献
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1,3-二氯四甲基二硅氧烷相继与环戊二烯基钠、钠砂及MCl4反应, 制得标题化合物: O(SiMe2)2(C5H4)2MCl2(1, M=Ti; 2, M=Zr; 3, M=Hf)。考察了1的卤素置换反应: 1与(NH4)2SiF6作用生成相应的二氟化物4, 4与氢溴酸作用生成相应的二溴化物5, 经元素分析, UV, ^1H(^1^3C)NMR和MS表征了它们的结构, 并利用X射线衍射法测定了2和3的晶体和分子结构。化合物1,2和3的有关结构数据比较表明, 由于中心金属的不同而引起其键长和键角的差异与其碳桥类似物(CH2)3(C5H4)2MCl2的情况相似。 相似文献
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苯并恶唑酮与六烷基亚磷酰胺, 乙氧基四烷基胺基亚磷酰胺和二(二烷基胺基)苯基膦的反应, 可得到O-确定磷酰化合物, 它们的结构通过IR, ^1H NMR , ^3^1P NMR,MS 和元素分析验证. 本文提出了形成这些化合物的可能的机理. 相似文献
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在二甲胺基二硫代甲酸钠、氯化亚铁及四硫代钼酸铵的自兜反应体系中, 以分步结晶法分离出MeFe3S4(Me2NCS2)5.CH2Cl2及MoFe3S1(Me2NCS2)6.2CH3CN等单立方烷簇合物, 并测定了后者的结构. 它的分子含两个Me2NCS2并具有最高核心氧化态[MoFe3S4]^6^+. 本文报道该化合物的结构特点, 指出在自兜反应体系中, 可能存在几种不同氧化态的单立方烷原子簇化合物. 相似文献
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Cp^*Cr(NO)(CO)~2与Fe(C~5H~4S)~2S反应,形成氧化-还原产物Cp^*Cr(NO)(SC~5H~4)~2Fe(1)。双杂核二茂铁化合物Cp^*M(NO)(EC~5H~4)~2Fe[M=Mo,E=S(2a),Se(2b);M=W,E=S(4a),Se(4b)]、CpMo(NO)(SC~5H~4)~2Fe(3)、Cp~2Mo(SeC~5H~4)~2Fe(6)和Cp~2W(SC~5H~4)~2Fe(7)可通过Fe(C~5H~4ELi)~2.2THF(E=S,Se)与Cp^*M(NO)I~2(M=Mo,W)、[CpMo(MO)I~2]~2或Cp~2MCl~2(M=Mo,W)反应制得。三核杂原子二茂铁化合物[Cp^*Cr(NO)~2]~2(EC~5H~4)~2Fe[E=S(8a),Se(8b)],由Fe(C~5H~4ELi)~2.2THF(E=S,Se)与二倍摩尔量的Cp^*Cr(NO)~2I反应制备。通过AgBF~4氧化2a得到二茂铁离子型化合物[Cp^*Mo(NO)(SC~5H~4)~2Fe]^+BF~4^-(5)。采用元素分析、红外光谱、^1H和^1^3CNMR谱以及EI-MS表征了所合成的新型化合物。 相似文献
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首次报道了四种杂氮钛三环的紫外光电子能谱,结合量子化学从头算和和电子密度拓扑分析方法对这些化合物的电子结构和分子内存在的弱相互作用进行了分析研究。通过优化STO-6G(d)基组(C:1s=5.66,ζ2s=1.675,ζ2p=1.66;O:ζ1s=7.67,ζ2s=2.25,ζ2p=2.20;N:ζ1s=6.66,ζ2s=1.91,ζ2p=1.89;H:ζ1s=1.24)对所研究的化合物进行了分子轨道计算,结合计算结果对化合物的紫外光电子能谱进行了解析和指认。实验得到的体现分子内弱相互作用σN-Ti的轨道电子的电离能表明了N,Ti间相互作用的弱成键特性,电子密度拓扑分析显示N,Ti原子间存在体现成键作用的键鞍点,键鞍点处电子密度的拓扑性质也进一步支持了N,Ti间弱成键作用的特性。 相似文献
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SHEN Lihong HU Junping WANG Haixian WANG Aibing LAI Yisheng KANG Yanhui 《高等学校化学研究》2015,31(3):367-371
A series of novel uracil and 5-fluorouracil-1-yl-acetic acid-colchicine derivatives(6a-6n) was synthesized via coupling uracil and 5-fluorouracil(5-FU) with C-10 analogues of colchicine. The antitumor activities of the target compounds against human hepatocellular carcinoma(BEL7402) cells, human ovary carcinoma(A2780) cells, human lung adenocarcinoma(A549) cells and human breast carcinoma(MCF7) cells were tested in vitro, and the structure-activity relationship(SAR) of the compounds was also studied. The bioassay results demonstrate that most of the tested compounds display significant activity and particularly, compounds 6a, 6e, 6h and 6l show more potent cytotoxic activities than 5-fluorouracil and colchicine. The results show that the new derivatives of colchicine are potential suppressors on human cancer. 相似文献
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《Journal of Saudi Chemical Society》2020,24(6):451-460
The present work describes the synthesis and characterization of thorium (IV) and dioxouranium (VI) coordination compounds with three Schiff bases derived from 1-furfurylaldehyde. All coordination compounds were characterized by elemental analysis, ultraviolet–visible spectroscopy, Fourier transform infrared spectroscopy, fluorescence spectroscopy, and thermal analysis. The structural pattern, the geometry of the complexes and the coordination number of the metal ions were assigned on the basis of physico-chemical parameters, such as FTIR and UV–Vis spectra. The elemental analyses show a 1:1 stoichiometry for thorium coordinative compounds and 1:2 stoichiometry for uranyl ion, respectively. The obtained coordination compounds are stable in air, soluble in some organic solvents (DMF, acetonitrile, DMSO) and show fluorescent properties. The coordination compounds have high molar conductance that indicates their electrolytes nature. On the basis of the obtained experimental results, combined with theoretical studies, the structures of the compounds under study were proposed. 相似文献
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测定了一系列偶氮香豆素化合物的紫外吸收波长(λa)、摩尔吸光系数(ε)和最大荧光发射波长(λe)的数据,并用溶致变色法测算了它们的二阶非线性极化率(βxxx).结果表明,所测定的化合物在溶液状态下表现出较强的二阶非线性极化特性. 相似文献
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硝基咪唑化合物结构与性质的理论研究 总被引:9,自引:0,他引:9
采用密度泛函理论B3LYP方法在6-311G(d,p)水平上, 对10种硝基咪唑化合物进行了理论计算: 几何优化结果显示所有化合物均无虚频, 为势能面上的稳定结构. 基于自然键轨道理论和三维静电势图, 分析了稳定结构的成键情况、咪唑环上的共轭性及硝基咪唑化合物的反应性. 理论估算了10种化合物的标准气态生成热和密度, 最后采用VLW方程计算了这些化合物的爆速、爆压, 其爆速在8.7和9.5 km/s之间. 结果表明: 咪唑环上有一定的芳香性, 所设计的系列硝基咪唑化合物能量高, 其中三硝基咪唑化合物是最有潜力的含能材料候选物. 相似文献
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Two kinds of coal liquid, the distilled fraction (270~340℃) (DF5) of low temperature carbonization tar and the extracts by heptane (PM1) and THF/MET (PM7) from Chinese Pingshuo bituminous coal were studied using GC-MS and 13C-NMR, and were compared with each other. The results show that the compounds in DF5 can be classified as paraffinic compounds and non-paraffinic compounds. The average molecular weight of the paraffinic compounds (MPC=303.03) is as same as that of the extract PM1 (MPM1=298.16), as well as their molecular weight distributions. The statistical average molecular structural parameters of the non-paraffinic compounds, such as aromatic carbon fa and the structure unit number MSP, were similar to that of the extract PM7. 相似文献
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LU Haibin JIN Xiangqun JIN Yang HUANG Bangrui WANG Cheng WANG Chunhe MA Fangyuan CHEN Yuting LI Jiarui CONG Yu WANG Wenlong SONG Yuming MU Xupeng 《高等学校化学研究》2016,32(4):576-580
A series of novel pyrimidin-4(3H)-one hydroxamate derivatives was designed, synthesized and studied for their activities against histone deacetylases(HDACs). The results indicate that all the compounds show HDACs inhibitiory activity. The antiproliferative activities of the compounds against HeLa and A549 cells were also investigated. The pharmacological results show compound 9g has potent activity in the enzymatic inhibition assay and cell-based assay. 相似文献
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Mono‐ and Dinuclear Ferrocenyl Ionic Compounds with Polycyano Anions. Characterization,Migration, and Catalytic Effects on Thermal Decomposition of Energetic Compounds
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Ersha Shao Dongdong Li Jizhen Li Guofang Zhang Weiqiang Zhang Ziwei Gao 《无机化学与普通化学杂志》2016,642(16):871-881
Neutral ferrocene‐based burning rate (BR) catalysts show strong migration trends and volatility during long‐time storage and curing of the composite solid propellants. To reduce these disadvantages thirty‐two ferrocenyl quaternary ammonium compounds, paired with polycyano anions, were synthesized and characterized by 1H NMR, 13C NMR, and UV/Vis spectroscopy, as well as elemental analysis. Additionally, crystal structures of eight compounds were confirmed by single‐crystal X‐ray diffraction. TG and DSC analyses indicated that the compounds containing 1,1,2,3,3‐pentacyanopropenide anions show high thermal stability. Cyclic voltammetry studies suggested that they are quasi‐reversible or irreversible redox systems. Anti‐migration tests verified that the tested compounds show very low migration tendency and some of them exhibit no migration after 30 days aging at 70 °C. Their catalytic efficiency in the thermal decomposition of ammonium perchlorate (AP), 1,3,5‐trinitro‐1,3,5‐triazacyclohexane (RDX), and 1,2,5,7‐tetranitro‐1,3,5,7‐tetraazacyclooctane (HMX) were examined by DSC analyses. The results revealed that most of the compounds exhibit distinct effects on the thermal degradation of AP and RDX. Two compounds have good catalytic ability in the thermal decomposition of HMX, representing rare examples of the reported ferrocenyl ionic compounds, which display catalytic property during combustion of HMX. 相似文献