3-十二烷氧基-2-羟基丙基-三甲基溴化铵的晶体结构测定及性能表征

用脂肪醇与环氯丙烷在碱性条件下合成了季铵盐型阳离子表面活性剂.所得产品用X-射线单晶衍射法测定了晶体结构.该化合物采用双分子层结构,整个化合物由交叉的线性烷基链、季胺阳离子和溴离子组成.用偏光显微镜、差示扫描量热(DSC)技术研究了其液晶行为,证明该化合物为近晶相热致液晶.     

二维异核配位聚合物{[Ag2Fe（SCN）6]（C5H6N）（H2O）}∞的合成与晶体结构

合成了二维异核配位聚合物{[Ag2Fe(SCN)6](C5H6N)(H2O)}∞(化学式:C11H8Ag2FeN7OS6),并对其结构进行了X射线表征.单晶衍射结果表明,该配合物属三斜晶系,空间群P1,晶包参数a=0 76285(4)nm,b=0 84576(4)nm,c=0 91531(3)nm,α=99 953(2)°,β=99 821(2)°,γ=95 479(2)°,V=0 56836(4)nm3,Z=1.八面体配位的Fe(Ⅲ)中心通过六个1,1,3 μ3 SCN-和周围的三个Ag2S2环连接成二维的阴离子网状骨架结构,质子化的吡啶以阳离子的形式和水分子一起存在于晶体结构中.     

有机杂化硫代锑酸盐化合物[Co（en）3]（Hen）SbS4和[Ni（en）3]2Sb2S5的溶剂热合成及晶体结构

利用溶剂热法合成2种有机杂化硫代锑酸盐化合物[Co(en)3](Hen)SbS4(1)和[Ni(en)3]2Sb2S5(2)(en=乙二胺),它们的结构经IR、元素分析和单晶x-射线衍射表征。1是由孤立四面体[SbS4]3-阴离子、质子化有机胺[Hen]+和配阳离子[Co(en)3]2+组成,而2是由孤立二聚阴离子[Sb2S5]4-和配阳离子[Ni(en)3]2+组成.     

(C6NO2H6)6[α-P2W18O62]·10H2O的合成、结构和电化学性质

以Dawson型多金属氧酸盐和异烟酸为原料,合成了一种新的超分子化合物(C6NO2H6)6[α-P2W18O62]·10H2O.通过元素分析、红外光谱、热重分析和X射线单晶衍射确定了该化合物的组成和结构.结构解析表明:该化合物是通过[α-P2W18O62]6-多氧阴离子和质子化的异烟酸阳离子之间的静电引力与广泛的氢键相互作用形成3D超分子结构.同时也进行了电化学及紫外光谱研究.     

十钒酸与二苯并十八冠六加合物的合成及晶体结构研究

合成了含有十钒酸阴离子的超分子化合物[ Na(DB18C6)(H20)2]3V10O28[CH3OH].[H3O]3并通过X射线衍射分析、IR光谱及元素分析对其结构进行了表征.单晶X射线衍射分析表明化合物属于单斜晶系,P21/m空间群,a=15.5520(16) nm,b=18.7581( 19)nm,c=16.3619(18) nm,β=109.0390(10),V=4512.1(8)nm3,Z=2,F(000)=2380,R1=0.0606,wR2=0.1312.化合物的晶体结构单元由一个无质子化的十钒酸根多阴离子、一个甲醇分子、3个[ Na( DB18C6)(H2O)2]+和3个H3O+阳离子组成,并且彼此之间通过静电力和氢键形成稳定的三维结构.     

以磺胺药物为阴离子的离子液体合成及其抑菌性能

以磺胺醋酰药物为阴离子,合成7种离子液体,以1H NMR和IR确证其结构;低温差示扫描量热(DSC)测定熔点或玻璃化转变温度,结果较相应钠盐有较大程度降低;离子液体对大肠杆菌和金黄色葡萄球菌的抑菌性比较发现,大肠杆菌敏感度强于金黄色葡萄球菌,并且此类离子液体抑菌性主要由季铵阳离子种类决定,吡啶离子液体的抑菌力强于甲基咪唑,长链离子液体优于短链离子液体.     

（C6NO2H6）6[α-P2W18O（62）]·10H2O的合成、结构和电化学性质

以Dawson型多金属氧酸盐和异烟酸为原料,合成了一种新的超分子化合物（C6NO2H6）6[α-P2W18O62].10H2O.通过元素分析、红外光谱、热重分析和X射线单晶衍射确定了该化合物的组成和结构.结构解析表明：该化合物是通过[α-P2W18O62]6-多氧阴离子和质子化的异烟酸阳离子之间的静电引力与广泛的氢键相互作用形成3D超分子结构.同时也进行了电化学及紫外光谱研究.     

3-十二烷氧基-2-羟基丙基-三甲基溴化铵的晶体结构测定及性能表征

用脂肪醇与环氯丙烷在碱性条件下合成了季铵盐型阳离子表面活性剂。所得产品用X-射线单晶衍射法测定了晶体结构。该化合物采用双分子层结构,整个化合物由交叉的线性烷基链、季胺阳离子和溴离子组成。用偏光显微镜、差示扫描量热（DSC）技术研究了其液晶行为,证明该化合物为近晶相热致液晶。     

Solid Phase Synthesis and Characterization of Serine Complex of Bismuth(Ⅲ)

通过碘化铋与丝氨酸锂盐间的室温固-固反应合成了纳米丝氨酸铋(Ⅲ)配合物:(C3H6O3N)2Bi( μ-I)2Bi[(C3H6O3N)I]·H2O.经元素分析、X-射线粉末衍射(XRD)、远红外光谱和差热-热重分析(TG-DTA)等进行表征,确定了配合物的组成和结构.同时对XRD衍射数据进行指标化,确定配合物的晶系和晶胞参数:丝氨酸铋配合物的晶体结构属于正交晶系,其晶胞参数为a=0.796 7 nm,b=1.9875 nm,c=2.2034 nm.     

丝氨酸铋(Ⅲ)配合物的固相合成与表征

通过碘化铋与丝氨酸锂盐间的室温固-固反应合成了纳米丝氨酸铋(Ⅲ)配合物:(C3H6O3N)2Bi(μ-I)2Bi[(C3H6O3N)I].H2O.经元素分析、X-射线粉末衍射(XRD)、远红外光谱和差热-热重分析(TG-DTA)等进行表征,确定了配合物的组成和结构.同时对XRD衍射数据进行指标化,确定配合物的晶系和晶胞参数:丝氨酸铋配合物的晶体结构属于正交晶系,其晶胞参数为a=0.796 7nm,b=1.987 5nm,c=2.203 4nm.     

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     

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