1,5-双(5-溴水杨醛)缩二氨基硫脲二丁基锡配合物的合成,晶体结构和杀菌活性研究

利用1,5-双(5-溴水杨醛)缩二氨基硫脲席夫碱与二丁基氧化锡为原料,在苯-甲苯混合溶剂中回流反应合成了一种新的有机锡席夫碱配合物,分子式为C23H28Br2N4O2SSn,用元素分析、红外光谱、核磁共振谱对目标化合物结构进行了表征,并用X-射线单晶衍射对其结构进行了确证。晶体结构解析表明,标题配合物的晶体属单斜晶系,P21/c空间群,每个独立单元中含有两个分子结构单元,晶胞参数:a=17.9191(9),b=18.791(1),c=17.9453(9),β=115.447(1)°,V=5456.2(5)3,Z=4,Dcalc=1.709g/cm3。分子间经典的N-H...N氢键使分子相互结合形成了二聚体,后者再通过范德华作用力结合堆积形成完成的晶体结构。抑菌活性测定结果表明,标题化合物及其类似物的抑菌活性具有较大的选择性,对苏云金杆菌(B.thuringiensis)和枯草杆菌(B.Subtilis)的抑菌能力较高,而对大肠杆菌(E.Coli)和金黄色葡萄球菌(S.Aureus)的抑菌能力较低。     

稀土钐邻香草醛缩甘氨酸席夫碱配合物的合成及表征

以六水氯化钐、邻香草醛缩甘氨酸席夫碱、8-羟基喹啉为原料,合成了邻香草醛缩甘氨酸席夫碱8-羟基喹啉稀土钐的三元配合物,通过元素分析、红外光谱、紫外光谱、热分析对配合物的结构进行了表征.实验表明,席夫碱脱质子以羧酸根的O原子与稀土Sm3+配位,而8-羟基喹啉脱质子后以酚羟基O和环上的N双齿配位,形成五元螯环.差热分析结果表明配合物热稳定性较好,不含结晶水,在300℃与550℃时,依次完全失去两种配体,最终分解产物为Sm2O3.初步推断该配合物化学式为Sm(C10H1 0NO4)2C9H6NO.     

不对称双缩二氨基硫脲席夫碱荧光探针的合成及其性能研究

利用噻唑-5-甲醛与单缩二氨基硫脲为原料,合成了一种新型不对称双席夫碱结构荧光探针N'-(4-氯亚苄基)-2-(噻唑-5-基亚甲基)肼基-1-硫代碳酰肼(L1),并对其结构进行了表征(NMR,IR,MS).在缓冲溶液(p H=7. 0)中,探针L1可以高选择性荧光识别Zn~(2+),检测限为5. 8×10~(-6)mol/L,p H适用范围为5~9.当Zn~(2+)与探针L1配位时,生成1:2型配合物(L-Zn2+),在365 nm紫外灯照射下,由无色变成亮绿色强荧光,具有潜在的应用价值.     

柔性配体构筑两个新的Dawson型超分子化合物的合成、结构以及性能研究

选用两个柔性配体,在水热条件下成功的得到两个新的基于Dawson多酸的超分子化合物,[H_6(L_1)_3(P_2W_(18)O_(62))]_2·5H_2O(1)和[H_6(L_2)_3(P_2W_(18)O_(62))]·3H_2O(2),L_1=1,4-双(5-(4-吡啶基)四唑基)-丁烷,L_2=1,1-双(3,5-二甲基-1H-吡唑基)甲烷.通过红外光谱、元素分析和单晶X-射线对化合物1和2的结构进行了表征.结构分析表明,化合物1的晶胞参数a=42.862,b=15.655,c=29.881(5),α=90°,β=93.72°,γ=90°,V=20008.33,Z=4,R1=0.0565,ωR2=0.1442.化合物2的晶胞参数a=15.020,b=26.347,c=23.177,α=90°,β=106.69°,γ=90°,V=9892(4)3,Z=4,R_1=0.0486,ωR_2=0.1279.化合物1包含两个Dawson多酸阴离子,配体通过氢键环绕在多酸阴离子周围.在化合物2中,配体L_2和Dawson多酸阴离子存在氢键作用拓展成一维超分子链结构,相邻的一维超分子链通过氢键作用形成二维超分子层结构.同时研究了两个化合物的电化学和光催化性质.     

几个新席夫碱的合成及性质研究

合成了5个新的席夫碱:牛磺酸缩2-噻吩甲醛席夫碱、牛磺酸缩邻香草醛席夫碱、牛磺酸缩5-硝基水杨醛席夫碱、牛磺酸缩5-溴水杨醛席夫碱、牛磺酸缩氧化胡椒醛席夫碱.它们的化学式分别为C7H8NS2O3K·H2O、C10H12NSO5K·H2O、C9H9N2SO6K·H2O、C9H9NSO4BrK·H2O、C10H10NSO5K·H2O.并测定了它们的相关性质.     

2,4,6-三巯基均三嗪单钠盐Na(H_2O)_3C_3H_2N_3S_3的合成及晶体结构

以三聚氯氰、Na2S和NaOH为起始原料,在pH值5～8的条件下,得到了2,4,6-三巯基均三嗪单钠盐的晶体,并对其进行了红外光谱、元素分析测试及单晶结构表征.晶体学参数为:单斜晶系,P2(1)/c空间群,a=10.479(4),b=12.761(5),c=7.822(3),β=109.623(6)°,V=992.8(7)3,Z=4,Dc=1.695 g.cm-3,R1=0.044 4,wR2=0.136 0(I>2σ),GOF=1.128.     

两个基于[P_2W_(18)O_(62)]~(6-)和[V_(10)O_(28)]~(6-)超分子化合物的合成及性能研究

采用水热合成技术,合成了两个基于不同类型的多金属氧酸盐和柔性双咪唑配体的超分子化合物(Hbtx)_3[H_3P_2W_(18)O_(62)]·H_2O(1)与(Hbtx)_3[H_3V_(10)O_(28)](2)(btx=1,4-双(咪唑基-1-甲基)苯),并通过X-射线单晶衍射、红外光谱以及元素分析等手段对化合物进行了表征.X-射线单晶衍射数据分析表明化合物1属于三斜晶系,P 1空间群,晶胞参数a=12.951(5),b=14.442(5),c=23.806(5),α=90.349(5)°,β=93.047(5)°,γ=108.160(5)°,V=4224(2)3,Z=2.化合物2属于单斜晶系,P21/n空间群,晶胞参数a=12.175(5),b=17.151(5),c=16.472(5),β=107.200(5)°,V=3285.8(19)3,Z=2.化合物1与2中,多酸阴离子[P2W18O62]6-和[V10O28]6-分别与柔性有机双咪唑配体btx通过分子间的氢键弱作用连接形成二维层状超分子网络.     

几个新席夫碱的合成及性质研究

合成了5个新的席夫碱牛磺酸缩2-噻吩甲醛席夫碱、牛磺酸缩邻香草醛席夫碱、牛磺酸缩5-硝基水杨醛席夫碱、牛磺酸缩5-溴水杨醛席夫碱、牛磺酸缩氧化胡椒醛席夫碱.它们的化学式分别为C7H8NS2O3K·H2O、C10H12NSO5K·H2O、C9H9N2SO6K·H2O、C9H9NSO4BrK·H2O、C10H10NSO5K·H2O.并测定了它们的相关性质.     

Keggin型多酸诱导合成的两个超分子化合物的水热制备

报道了两例水热条件下合成的Keggin型多金属氧酸盐和柔性双吡啶四氮唑配体构筑的多酸基超分子化合物:[La1.5PMo12O40](1)(La=1,4-双(5-(3-吡啶基)-四唑基)丁烷)和[Lb2Si Mo12O40](2)(Lb=1,3-双(5-(3-吡啶基)-四唑基)丙烷),并通过单晶X-射线衍射、元素分析和红外光谱对两种晶体进行了表征.结构分析表明化合物1属于三斜晶系,P 1空间群,晶胞参数a=13.575(5),b=14.060(5),c=15.754(5),α=73.136(5)°,β=80.084(5)°,γ=73.048(5)°,V=2739.9(17)3,Z=2,R1=0.0529,ωR2=0.1407.化合物2属于正交晶系,Cmca空间群,晶胞参数a=23.392(5),b=0.451(5),c=25.013(5),V=6115(3)3,Z=4,R1=0.0395,ωR2=0.0923.在两个化合物中,Keggin多酸阴离子和有机双吡啶四氮唑配体La和Lb通过分子间非共价键的氢键弱作用连接形成超分子网络.我们研究了两个化合物的电化学和光催化性能.     

混合配体构筑的二维镍配位聚合物的研究(英文)

通过水热反应合成了一个具有二维层状结构的配位聚合物[Ni(bbim-4)(L1)]n(bbim-4=1,4-双(咪唑-1-基)丁烷,L1=对苯二乙酸阴离子),经元素分析、红外光谱、粉末和单晶XRD对产物进行了表征.晶体属于单斜晶系,空间群为P21/n,主要晶胞参数:a=9.772 8(3),b=8.634 0(3),c=11.154 0(3),β=92.755(2),Z=2,V=940.07(5)3,Dc=1.558 mg.mm-3,μ(CuKα)=1.804 mm-1,F(000)=460.此配位聚合物具有二维聚合物层,层与层之间通过范德华力形成一个三维的超分子结构.由热重分析研究了配位聚合物的热稳定性.     

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