o,o -二(β-叠氮乙基)-α-对甲苯磺酰胺基-对硝基苄基磷酸酯的合成与晶体结构

合成了o,o -二(β -叠氮乙基)-α-对甲苯磺酰胺基对硝基苄基磷酸酯(C18H21N8O7PS),通过元素分析、IR和1H NMR对化合物进行了表征,用X射线单晶衍射法测定了该化合物的晶体结构. 结果表明晶体属三斜晶系,P1空间群,a=0.8136(1)nm, b= 1.1872(1)nm , c=1.3412(1)nm, α=109.455(7)°, β=90.880(8)°, γ=96. 863(9)°, V=1.2106(3)nm3, Mr=524.46, ρc=1.439 g·cm-3, Z=2, μ(MoKα)=0.260mm-1, F(000)=544, 在0°< 2θ<50°范围内收集3560个独立衍射点,其中可观测衍射点2700个( |F|2≥6.0σ|F|2). 晶体结构用直接法解出,经全矩阵最小二乘法修正,最后的偏离因子为R=0.106,RW=0.095. 化合物的分子中,2个取代苯环位于分子主 链的同一侧,2个苯环平面近于平行. 2个取代的叠氮乙基的取向近于平行地指向同一方向, 向着几乎垂直于苯平面的方向伸展. 2个独立的分子之间以1对N-H…O氢键连接形成中心对称的二聚体,成为晶体结构的基本重复单元.     

2,5二(2,4二乙基苯甲酰基)对苯二甲酸的合成及晶体结构

以均苯四甲酸酐与间二乙苯为原料,合成了未见文献报道的2,5二(2,4二乙基苯甲酰基)对苯二甲酸,利用溶剂挥发法得到该化合物的单晶.同时对其进行了元素分析、核磁共振表征和X射线单晶衍射分析.晶体结构分析结果表明:该晶体属于三斜晶系,P1空间群,a=0.5451(11)nm,b=0.7511(15)nm,c=1.5844(3)nm,α=84.45(3)°,β=85.37(3)°,γ=85.86(3)°,Dc=1.258g/cm3,Z=2,F(000)=258,μ=8.7×10-8nm-1,最终偏差因子分别为R=0.1473,wR=0.2097.分子之间通过相邻分子间形成的O-H…O氢键相连,分子间和内部的氢键使得晶体结构稳定性增强.     

双呋喃并[3,4-b]喹啉-1,8-二酮化合物的合成和晶体结构

以间苯二甲醛、5,5-二甲基-3-对甲苯基氨基环己-2-烯酮和季酮酸为原料,在醋酸和N,N-二甲基甲酰胺(DMF)混合溶剂(体积比2∶1)中,通过微波辅助的多组分反应一步合成标题化合物.结构经红外光谱、核磁共振和元素分析得以确证,并通过单晶X射线衍射进一步确证.该晶体属于三斜晶系,空间群P-1,a=1.162 15(14),b=1.339 02(16),c=1.478 23(19) nm,α=96.226(2)°,β=94.729(2)°,γ=106.956(3)°,Mr=720.83,V= 2.171 6(5) nm3,Dc=1.102 g/cm3,Z=2,μ (Mo Kα)=0.073 mm -1,F(000)=764.晶体结构用直接法解出,使用全矩阵最小二乘法对原子参数进行修正,最后的偏离因子R=0.098 1,Rw=0.126 3.     

咔唑席夫碱衍生物的制备与表征

以咔唑为母体,合成了(E)-4-(N-乙基咔唑-3-甲亚胺基)-安替比林希夫碱(R1)和2-氨基-3-(E)-(N-对苯甲基咔唑基-甲亚胺基)-马来腈席夫碱(R2).利用CCD、~1HNMR、MS、HFT-IR等对产物进行了表征.X-射线单晶衍射表明:R1晶体属单斜晶系,P2(1)/n空间群,晶胞参数a=10.538(3),b=18.350(6),c=11.122(3);α=90°,β=97.067(7)°,γ=90°,Z=4.R2晶体属三斜晶系,空间群P-1(2),a=91.542(3),b=92.884(2),c=113.576(2);α=11.367(2)°,β=11.367(2)°,γ=13.754(3)°,Z=4.R1和R2最大吸收波长分别为λ_(max)=396.1 nm和λ_(max)=351.1 nm.R1吸收荧光发射波长(甲醇溶液)为458.7 cm.     

稀土-邻苯二甲酸配合物[Eu2(1,2-BDC)3(H2O)]n的合成、结构及发光性质研究

在水-乙醇混合体系中,Eu(NO3)3·6H2O与邻苯二甲酸酐反应形成邻苯二甲酸根桥联的双核铕配合物,[Eu2(1,2-BDC)3(H2O)]n(1,2-BDC=邻苯二甲酸),用元素分析、红外光谱和荧光光谱对其进行了表征,并用X-ray测定了配合物的晶体结构.晶体属于单斜晶系,P2(1)/c空间群,晶胞参数α=0.800 99(12)nm,b=2.641 7(4)nm,c=1.16778(18)nm,α=90°,β=107.191(2)°,γ=90°,V=2.360 6(6)nm3,Z=4,μ=5.339mm-1,Dc=2.286 g/cm3,F(000)=1 544,R1=0.032 5,wR2=0.061 4.结构分析表明,化合物中的Eu(Ⅲ)离子通过邻苯二甲酸根桥联,形成空间二维层状结构.     

离子液体中8-(2-甲氧基苯基)-3,5-二[(E)-1-(2-甲氧基苯基)亚甲基]-1,2,3,5,6,7-六氢二环戊二烯并[b,e]吡啶的合成与晶体结构

在离子液体([BPY]BF4)存在下,由2-甲氧基苯甲醛、环戊酮和醋酸铵一锅法合成,并经N,N-二甲基甲酰胺(DMF)与95%的乙醇混合溶剂重结晶得到化合物8-(2-甲氧基苯基)-3,5-二[(E)-1-(2-甲氧基苯基)亚甲基]-1,2,3,5,6,7-六氢二环戊二烯并[b,e]吡啶的晶体.其结构通过IR,1 HNMR,13 CNMR进行表征,用X射线单晶衍射法测定该化合物的晶体结构.结果表明,晶体属三斜晶系,P1空间群,a=1.103 66(14)nm,b=1.167 47(17)nm,c=1.229 54(19)nm,α=69.78(0)°,β=66.34(0)°,γ=81.53(0)°,Mr=501.60,V=1.361 59(84)nm3,Z=2,μ(Mo Kα)=0.077mm-1,F(000)=532.最终偏离因子R=0.183 5,Rw=0.221 0.化合物分子中,原子C1,C5,C6,C7,C11和N1形成一个六元吡啶环.     

对羟基苯甲酸六次甲基四胺加合物的晶体结构

用X射线单晶衍射试验方法测定了对羟基苯甲酸六次甲基四胺加合物(CH2)6N4.(p-HOC6H4CO2H)的晶体结构.晶体属单斜晶系,P21/n空间群,a=0.600 1(4)nm,b=1.184 7(9)nm,c=1.890 6(1)nm,β=93.61(5)°,Z=4,V=1.341 6(2)nm3,Dc=1.378 g.cm-3,μ(MoKα)=0.071 mm-1,F(000)=592,对2 341个独立衍射点的最终偏离因子R1=0.040 4.在标题化合物的晶体结构中独立的对羟基苯甲酸分子和六次甲基四胺分子组交错排列,借助多种氢键形式形成三维氢键网络结构,其中弱氢键扮演着重要的角色.     

5-溴-2-羟基苯基苯甲酮苯甲酰腙的合成及晶体结构

由5-溴-2-羟基苯基苯甲酮和苯甲酰肼通过缩合反应,合成了一种新的芳香酰腙化合物:5-溴-2-羟基苯基苯甲酮苯甲酰腙.通过X射线单晶衍射对该化合物进行晶体结构的表征.研究表明,该酰腙为单斜晶系,空间群为P2(1)/c,晶胞学数据为a=17.505(5)nm,α=90.00°,b=13.761(4)nm,β=94.546(6)°,c=7.219(2)nm,γ=90.00°.V=1733.4(9)nm3,Z=4,μ=2.387mm-1,Dc=1.515mg/m3,F(000)=672,Final R indices[I>2sigma(I)]R1=0.0439,wR2=0.0813 R1=0.1051[I>2sigma(I)],wR2=0.1007(all data).     

N-乙酰基-3,3双(3-(4-氯苯基)-1,2,4-噁二唑-5-基)-1H-吲哚-2(3H)-酮的合成及其晶体结构

标题化合物C28H19Cl2N5O4由2分子5-(一氯甲基)-3-(4-氯苯基)-1,2,4-噁二唑和1分子N-乙酰基-吲哚-2-酮反应,用乙酸乙酯重结晶得到.在该化合物的晶体结构中,一个结构单元中包含2分子的N-乙酰基-3,3-双(3-(4-氯苯基)-1,2,4-噁二唑-5-基)-1H-吲哚-2(3H)-酮.其结构通过X-射线衍射法确定,晶体属于单斜晶系,P21/c空间群,Mr=1119.76,a=13.747(3)nm,b=16.308(3)nm,c=23.433(5) nm,β=97.20(3)°,V=5 211.9(19) nm3,dc=1.427 g/cm3,Z=4,F(000)=2 300,μ=0.294 mm-1,最终偏差因子分别为R=0.088 6,wR=0.212 0,分子之间通过相邻分子间形成的C-H…O氢键相连.     

5-甲基间苯二甲酸、醋酸镉与1,3二(咪唑)-丙烷配合物的合成及晶体结构

合成了一个新的配合物{[Cd(mip)(1,3-Bip)·H2O]}n(H2mip=5-甲基间苯二甲酸;1,3-Bip=1,3二(咪唑)-丙烷),并测定了其晶体结构,X衍射结构分析表明:该化合物的化学式为C18H18CdN4O5,该晶体属单斜晶系,P2(1)/n空间群,晶胞参数:a=1.028 1(3)nm,b=1.142 2(4)nm,c=1.728 2(6)nm,α=90°,β=104.390(4)°,γ=90°,V=1.965 9(11)nm3,Z=4,Dc=1.631g/cm3,最终偏差因子R1=0.050 1,wR2=0.104 7(Iσ(I)),F(000)=968,中心金属Cd(II)离子与来自3个5-甲基间苯二甲酸根的4个氧原子以及两个1,3二-(咪唑)-丙烷的两个氮原子配位,形成六配位的变形八面体构型.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with