金刚乙胺缩水杨醛Schiff碱铟配合物的合成、表征及抑菌活性研究

利用四水合三氯化铟与金刚乙胺缩水杨醛Schiff碱(即配体L)进行反应,合成了新的配合物.用核磁共振、红外光谱、元素分析等测试手段,对新配合物进行了结构表征.测试了四个不同浓度下配体及配合物对金黄色葡萄球菌、大肠杆菌的抑菌活性.     

金刚乙胺邻香草醛Schiff碱铟配合物的合成与表征

利用四水合三氯化铟与金刚乙胺缩邻香草醛Schiff碱(即配体L)进行反应,合成了新的配合物.用核磁共振、红外光谱、元素分析及热重分析等测试手段,对新的配合物进行了结构表征.结果表明,配合物的组成为InCl3L.C2H5OH,即每个配合物分子由1个三价In离子、1个配体L、3个氯离子,以及1个乙醇分子以类似结晶水的形式共同组成.配体中酚羟基上的H原子与N原子相吸形成了分子内氢键,并以氢键连接构成了一个新六元环.由配体形成配合物时,配体上原来成键模式完全保留了下来.配体分子内亚胺基中的氮未参与配位,而配体上酚羟基的氧及甲氧基的氧同时与中心原子In配位,形成双齿螯合配位构型.配合物中In原子为五配位的.     

钯（Ⅱ）混配合物的稳定性和配体堆积作用研究

用ｐＨ电位滴定法测定了三元混配合物把（Ⅱ）／腺苷５’－三磷酸／配体Ａ（Ａ＝１，１０－邻菲淋，２，２’－联吡啶和Ｌ－色氨酸）在４０％（Ｖ／Ｖ）二哑烷－水溶剂中的稳定常数（Ｉ＝０．１，ＫＮＯ３；２５±０．１℃）；比较和讨论了三元混配合物和二元配合物的稳定性差异；用＇ＨＮＭＲ法研究了三元混配合物体系中分子内芳环配体之间的堆积作用，计算得到的堆积度和参与堆积的芳环大小顺序一致。     

角度重迭模型的应用(Ⅰ)

本文依据角度重迭模型的基本原理,首先计算了d过渡系金属离子与单齿配体形成的不同构型配合物的d~*轨道能量:接着,为了使参数单一化,将配体分为三类,计算了各类配合物的d~*轨道能量。得到了一套非常实用的数据。     

以β－二酮类为配体的铟有机配合物的合成及表征

用3种β-二酮为配体与Et2In按摩尔比1∶1和2∶1反应,合成了6种新的有机铟配合物.对这6种配合物进行了元素分析、MS和IR分析,并对这些配合物的热稳定性和溶解性作了初步探讨.根据IR光谱分析,含有β-二酮基的有机铟配合物的结构为:β-二酮基中的两个O原子与In配位,形成螯合的6员环.根据MS分析,发现配合物1-6,在升温过程中,都有歧化现象,歧化反应朝着β-二酮基增多的方向进行.因此,含有β-二酮基和乙基的有机铟配合物的热稳定性大小为:EtIn(β-diket)2>Et2In(β-diket).     

双(吡咯-2-甲烯胺)配体的超分子自组装研究

以2-吡咯甲醛和反-1，4-环己二胺为原料合成一种新的双（吡咯-2-甲烯胺）配体，然后与相应的金属醋酸盐或者金属氯化物反应制备配合物．通过质谱、红外光谱、紫外-可见光谱、X-Ray单晶衍射以及元素分析等测试手段确定了配体的结构；介绍了其配合物的一般合成方法，讨论了决定其金属配合物构型的影响因素以及影响其空间堆积方式的氢键作用．     

四氮唑钴配合物的合成及结构表征

以四氮唑乙酸为原料,经schiff碱缩合反应合成酰腙配体。在常温下,通过溶剂挥发法制备配合物,其化学式为C18H14CoN14O2。利用CCD X-射线单晶衍射仪对配合物进行结构表征,结果表明此配合物为单核Co六配位,借助分子间氢键的弱作用力形成网络堆积结构。     

钴希夫碱配合物的合成和载氧性质

合成了以水杨醛,邻香兰素与１,３－丙二胺及邻苯二胺缩合的希夫碱配体及钴（Ⅱ）的配合物ＣｏｓａｌｐｒＨ２Ｏ、ＣｏｖａｎｅｎＨ２Ｏ、Ｃｏｓａｌｏｐｈｅｎ２Ｈ２Ｏ、Ｃｏｖ－ａｎｏｐｈｅｎ２Ｈ２Ｏ．用元素分析,红外光谱进行了表征,通过测定配合物在正戊醇溶液中吸收氧气的体积,计算了氧合反应的化学计量比、平衡常数及热力学参数ΔＨ０,ΔＳ０．考察了温度、碱及配体结构对配合物载氧性质的影响,发现低温、强碱对配合物双氧亲和有利,配体的位阻和共轭效应对吸氧不利．     

堆积饱和规律及其应用(Ⅱ)

堆积饱和规律上文已作了介绍.本文用此规律解释部分f 电子组元素配合物和金属有机化合物的结构.先计算有关化合物SAS 值,然后绘制堆积图进行系统分析.图1是堆积图的一种.图中以Y 轴表示配合物的立体角系数和,以X 轴表示配合物的表观配位数.金属离     

Zn^2＋—bipy—PCA^—体系芳环堆积作用的研究

采用萃取方法研究了Ｚｎ＾２＋－ｂｉｐｙ－ＰＣＡ＾－体系中配体间的芳环堆积作用，讨论了堆积百分率与配体中碳链长短及芳环大小的关系，合成并表征了混配配合物。     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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