[Co（2,6-pyridinediformates）2（H2O）3]的合成与晶体结构

合成了2,6-吡啶二甲酸合钴的配合物,通过了元素分析、红外光谱对其结构进行了表征.用X-射线单晶衍射测定了该配合物的晶体和分子结构.配合物晶体为单斜晶系,空间群P 21/c,晶胞参数：a=13.8584（11）,b=10.0806（8）,c=13.6858（10）,α=90.00°,β=115.843（5）°,γ=90.00°,Z=4,V=1720.7（2）3,Dc=1.719g/cm3,μ=1.064mm-1,F（000）=908,差值电子密度最高和最低峰为711和-756e.nm-3.     

锌(Ⅱ)与2-巯基苯并噻唑和邻菲啰啉的配合物[Zn(mbt)_2(phen)]的合成与晶体结构

一种新的Zn(Ⅱ)配合物[Zn(mbt)2(phen)](2-Hmbt=2-巯基苯并噻唑;phen=邻菲啰啉)已经合成出来,并通过元素分析,红外光谱及X-ray单晶衍射进行表征.该晶体属单斜晶系,C2/c空间群,晶胞参数为a=53.018(12)nm,b=9.824(2)nm,c=14.149(3)nm,α=90.00°,β=90.10°,γ=90.00°,V=7369(3)nm3,Z=2.中心原子Zn与两个mbt的两个环外S原子及phen配体的两个N原子双齿螯合配位形成变形四面体构型.该配合物包含两个晶体学上独立的分子,通过X-ray单晶衍射分析表明这两个分子只是在键长和键角上略微不同.     

九配位多孔金属有机框架Eu(HCOO)_3配合物的原位合成及其结构分析

在高温水热条件下,N,N-二甲基甲酰胺(DMF)水解生成甲酸配体,合成九配位的配合物Eu(HCOO)3,配合物通过红外光谱,X-射线单晶衍射和元素分析.结果显示:配合物为三方晶系,R3m空间群.a=1.04972(3)nm,b=1.04972(3)nm,c=0.40011(2)nm,α=90.00°,β=90.00°,γ=120.00°,V=0.38182(2)nm3.配合物中,甲酸根以三齿配位方式桥联,每1个铕(Ⅲ)离子与9个甲酸根的氧原子配位,形成了EuIII O9的九配位三帽三角棱柱体结构,具有高度对称结构.同时对配合物进行了荧光测试,发现配合物具有下转换发光,荧光寿命较长为1.1ms.     

N-氧化-2-巯基吡啶锌盐的合成及晶体结构

以2-氯吡啶为原料,在冰醋酸介质中,用双氧水氧化生成N-氧化-2-氯吡啶.N-氧化-2-氯吡啶与NaSH反应进行巯基化,再经制备钠盐,最终与ZnSO4螯合得到N-氧化-2-巯基吡啶锌盐.通过熔点、核磁氢谱及X射线单晶衍射对产物进行了表征及晶体结构分析.分析结果表明,该晶体属于单斜晶系,P21/C空间群,a=0.84010(17)nm, b=1.0184(2)nm,c=1.3736(3)nm,α=90.00°,β=97.23(3)°,γ=90.00°,Dx=1.810g/cm3,Z=4,F(000)=640,μ=2.453 mm-1.最终偏差因子分别为R=0.0325,wR =0.0728.     

四氟硼酸氯·[三(2-氨基乙基)胺]合锌(Ⅱ)的合成和晶体结构

氯化锌、三(2-氨基乙基)胺及四氟硼酸钠在甲醇介质中反应,合成单核锌配合物{[(tren)ZnCl]BF4},用IR和1H NMR等手段对该化合物的结构进行表征.单晶x衍射法测得其晶体结构为单斜晶系,空间点群为P2(1)/c,晶体学参数为a=1.068 0(3)nm,b=1.153 2(3)nm,c=1.103 4(3)nm,α=90.00°,β=102.453°,γ=90.00°,V=1.327 0(7)nm3,Dc=1.671 g/cm3,Z=4,F(000)=680,μ=2.083 mm-1.     

基于4-吡啶氰原位合成的四氮唑铜配合物研究

本文以4-吡啶氰和一价铜盐,在溶剂热条件下原位自组装合成了一个新的配合物.通过X射线单晶衍射测定了其结构,该配合物属于单斜晶系,空间群为P2（1）/c,a=5.7（nm）,b=15.9（nm）,c=10.8（nm）,a=90°,β=93.8,V=984.2nm3,配体为刚性配位,形成一个三维的具有孔道的结构,还测定了该配合物的荧光性质。     

配合物[Zn(SA)2(H2O)2]的合成及晶体结构

在乙醇和水的混合体系中合成了锌配合物[Zn(SA)2(H2O)2](SA=水杨酸根),通过元素分析及X-射线单晶衍射对其进行了表征。结果表明该化合物属于单斜晶系,P21/c空间群,晶胞参数为a=1.55051(15)nm,b=0.53522(10)nm,c=0.91962(14)nm,α=90.00°,β=93.567(2)°,γ=90.00°,晶胞体积V=0.7617(2)nm3,Z=2,Dcalc=1.638 g.cm-3,F(000)=384,μ=1.652 cm-1,R=0.0298,wR=0.0710。     

异金属Cu-Zn配合物的合成、晶体结构及光谱表征

在溶剂热条件下,利用配合物配体CuL与高氯酸锌反应,合成了一例新的异金属配合物[(CuL)2Zn(ClO4)2],其结构经X-射线单晶衍射、元素分析、红外光谱,紫外—可见光谱等表征.配合物属于单斜晶系,C2/c空间群.晶胞参数分别为a=1.5756(2)nm,b=1.7660(2)nm,c=1.5570(2)nm,α=90°,β=94.137(2),γ=90°.配合物通过分子间氢键连成一维链状结构.     

3-羧基水杨醛缩2-氨甲基吡啶合铜配合物的合成、表征和晶体结构

合成了3-羧基水杨醛缩2-氨甲基吡啶(H2SP)及其Cu(Ⅱ)配合物[Cu(HSP)(H2O)2]ClO4,通过红外光谱、紫外光谱、X射线单晶衍射分析等手段对配合物的结构进行了表征.该配合物属于单斜晶系,P-1空间群,晶胞参数为:a=0.871 53(12)nm,b=1.017 05(15)nm,c=1.939 3(3)nm,β=93.3°,V=1.716 13 nm3,Z=4,Dc=1.758 12 g/cm3,Mr=454.27,F(000)=924.00,R1=0.072 5,wR2=0.092 2.配合物中铜离子为五配位,处于变形的四方锥形配位环境中.分子间通过π-π堆积和氢键作用形成双分子链,然后通过π-π堆积形成二维层状结构,最后通过C-H…O弱氢键形成三维结构.     

双(2-苯并咪唑基)辛烷的合成及其晶体结构

以邻苯二胺和癸二酸为原料合成了双(2-苯并咪唑基)辛烷,其结构经1H NMR,IR,元素分析和x-射线单晶衍射表征.1属Monoclinic晶系,C2/c空间群,晶胞参数为:a=22.334(9)nm,b=9.638(4)nm,c=9.899(4)nm,a=90.00°,β=114.431(6)°,γ=90°,Dc=1...     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~     

Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has