含草酰胺桥大环三核配合物的合成、结构及性质研究

以一个草酰胺大环铜配合物为前驱体,设计合成了一个新颖的三核配合物,并对其进行了元素分析、红外光谱,电子顺磁共振以及X射线单晶衍射等表征,晶体结构解析表明:该配合物的组成为[Cr(CuL)2(C2H5OH)2](ClO4)3.配合物属于三斜晶系,P-1空间群.晶胞参数为a=0.918 44(11)nm,6=1.307 90(16)nm,c=1.539 01(18)nm,a=98.389(2)°,β=90.112(2)°,γ=105.312(2)°,F(000)=789,R1=0.094 0,wR2=0.241 3.     

二甘双酰氮甲基苯胺(L)稀土高氯酸盐配合物的合成及表征

在非水介质中合成了5种轻稀土高氯酸盐与配体二甘双酰氮甲基苯胺形成的固体配合物,通式为[Ln(L)2(H2O)2](ClO4)3(Ln=La,Pr,Nd,Sm或Eu).用元素分析、摩尔电导、红外光谱、核磁共振和TG-DTA分析对这些配合物进行了表征.结果表明,在这些新配合物中,配体L表现为三齿配位行为.     

三甘双酰氮甲基苯胺稀土高氯酸盐配合物的合成及表征

在非水介质中由轻稀土高氯酸盐与配体三甘双酰氮甲基苯胺(L)形成的6种具有稀土特征颜色的固体配合物,通式为[Ln(L)2(H2O)n](C1O4)3(Ln=La,Pr,Nd,Sm时,n=2;Ln=Eu,Tb时,n=1;不包括Pm),在这些新配合物中,配体L表现为四齿配位行为.     

稀土硝酸盐与N,N,N’,N’,-四正丁基己二酰胺配合物的红外和拉曼光谱

本文合成了化合物Bu_2 NCO(CH_2)_4 CONBu_2(TBAA),并与稀土硝酸盐制得一系列配合物,其化学式为Ln_2(TBAA)_3 (NO_3)_6 (Ln=La,Nd,Sm,Eu,Gd,Tb,Dy,Tm,Lu)通过元素分析、红外光谱和拉曼光谱等测试研究了该系列配合物有关性质,表明该系列配合物具有相似的红外和拉曼特性,所有的NO_3均为双齿配体.三个有机配体分别以羰基中的氧与两个Ln(Ⅲ)配位,每个Ln(Ⅲ)的配位数为9.     

新型有机-无机杂化杂金属多核配合物[Cd2(CuL)4(V4O12)]·2CH3OH·2H2O的合成与晶体结构

以偏钒酸、大环草酰胺配合物CuL(L=2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-diene)为共配体,利用液液扩散法设计并合成了有机-无机杂化杂金属多核配合物[Cd2(CuL)4(V4O12)]·2CH3OH·2H2O(1).通过元素分析、红外光谱及X射线单晶衍射等方法进行了结构表征.结果表明:该配合物属于三斜晶系,P-1空间群;晶胞参数a=1.048 48(17) nm,b=1.331 7(2) nm,c=1.603 0(3) nm,α=93.662(2)°,β=104.084(2)°,γ=107.987(2)°,V=2.041 3(6) nm3,Z=1.其结构为通过大环草酰胺、V4O124-的配位作用构成的中心反对称的十核杂三金属Cd2 Cu4 V4配合物.     

稀土硝酸盐邻香兰素对甲苯胺Schiff碱配合物的热分解动力学机理分析

合成了邻香兰素对甲苯胺Schiff碱配体(C15H15NO2,以L表示)与稀土硝酸盐Ln(NO3)3·nH2O的9种新的配合物[Ln(NO3)3L2](Ln=Nd、Gd、Dy、Ho、Er、Tm、Yb、Lu、Y),并从一条热重曲线导出该系列稀土硝酸盐邻香兰素对甲苯胺Schiff碱配合物的热分解动力学机理,为相边界收缩圆柱体,并推断出了它们的反应动力学方程式.     

系列双核Ln(Ⅲ)配合物的合成,结构及发光性能

采用水热及水浴加热方法,合成了3种双核Ln(Ⅲ)配合物,[Sm2(p-ClC6H4COO)6(phen)2(H2O)2](1),[Eu2(p-ClC6H4COO)6(phen)2(H2O)2](2),[Tb2(p-ClC6H4COO)6(phen)2](3).通过X-射线单晶衍射确定了它们的晶体结构.3种双核Ln(Ⅲ)的配合物结构上的共同特征是:每个Ln(Ⅲ)离子均为8配位,2个Ln(Ⅲ)离子均由4个对氯苯甲酸根桥联;另2个对氯苯甲酸根均作端配体,配位方式不尽相同.室温下,测定了3种配合物的IR,UV-Vis-NIR和荧光光谱.3种配合物在可见区均表现出较强的Ln(Ⅲ)特征发射,配体的发射大大减弱,甚至完全猝灭,这表明配体与中心离子Ln(Ⅲ)离子间发生了有效的能量传递,即配体有效的敏化了Ln(Ⅲ)的发光.而且,通过对比发现,配合物(2)和(3)中配体的敏化要优于配合物(1),这可能与Ln(Ⅲ)离子自身的能级特点有关.     

水杨醛与丙二胺缩合而成的Schiff碱与过渡金属形成的10个配合物的合成与结构分析

本文合成了10个新的过渡金属配合物,[MnL].H2O(1),[CuL].H2O(2),[Cu4L2Cl4](3),[Mn4L2Cl4](4),[CrL(H2O)2](NO3)(5),[Cd2L'2(CH3OH)2(NO3)2](6),[NiL]3(sal).2H2O(7),[CoL(H2O)2]2.4H2O(8),[CoL'2](C104)(9)和[(UO2)L(CH3OH)]2(10).通过元素分析和单晶X-射线结构分析准确确定了所有这些新化合物的分子结构.     

C2O2-4桥联Cd3ⅡFeⅢ异四核配合物的合成、表征及生物活性

合成和表征了二种新的草酸根桥联的异四核配合物[Cd.Fe(C2O4)3(bpy)6]ClO4)3(1)和[Cd3Fe(C2O4)3(Me2bpy)6](ClO4)3(2),其中bpy表示2,2-联吡啶Me2bpy表示4,4-二甲基-2,2-联吡啶.经元素分析,摩尔电导和红外光谱等手段推定配合物具有草酸根桥联结构.生物活性试验表明,异四核配合物的杀菌活性优于桥配体的杀菌活性.     

乙二胺N,N-二(4-乙酰胺苯甲酸)-二乙酸配合物合成、表征与性能研究

通过乙二胺四乙酸二酐与对氨基苯甲酸的酰化反应合成了乙二胺N,N-二(4-乙酰胺苯甲酸)二乙酸(H4L),并以此为配体分别与稀土离子Sm3+、Gd3+、Eu3+和过渡金属离子Mn2+、Fe3+组装得到系列配合物.用红外光谱、紫外-可见光谱、元素分析及热重-差热分析对配合物进行了组成与结构的表征,配合物的组成可表示为M(HL)?3H2O（M=Sm3+, Eu3+,Gd3+,Fe3+）或者M(H2L)?3H2O（M=Mn2+）.配合物Gd(HL) ?3H2O的荧光发射光谱中没有离子特征谱图,而配合物Eu(HL)?3H2O在618nm处5D07F3跃迁的发射峰最强.配合物Gd(HL)?3H2O的弛豫率为7.43mmol/(L?s),体外弛豫性能明显提高.     

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.     

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     

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

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