4'-取代乙酰基苯并-冠-5和双(苯并-15-冠-5)的合成

本文报道了五种4'-取代乙酰基苯并-15-冠-5(其中四种为新化合物)和五种新型双(苯并-15-冠-5)的合成.产物经元素分析、质谱、红外光谱和核磁共振谱(~1H谱和部分~(13)C谱)鉴定,证明与预期的化学结构相符.文中还对合成路线和产物的结构特点进行了讨论.     

稀土冠醚类配合物的研究(Ⅻ)——轻稀土溴化物与苯并-15-冠-5配合物的合成及性质

以热乙睛为介质,合成出轻稀土溴化物与苯并-15-冠-5(B15C5)的配合物Ln(B15C5)Br_3·nH_2O(Ln=L_α-Nd,n=1,2).所得配合物是非溶剂化的,置于空气中吸水很快.通过元素分析、溶解性与摩尔电导、红外光谱、紫外光谱、核磁共振氢谱及差热一重分热析研究了配合物的组成和有关性质.     

Co、Ni、Cu、Zn氯化物单氮杂苯并-15-冠-5固体配合物的合成与表征

研究了Co(Ⅱ )、Ni(Ⅱ )、Cu(Ⅱ )、Zn(Ⅱ )氯化物与单氮杂苯并 - 15 -冠 - 5之间的反应 ,合成了 4个未见文献报道的冠醚配合物 .通过元素分析、摩尔电导、红外光谱、紫外光谱确定了配合物的组成 ,讨论了配合物有关的物理、化学性质     

5-芳甲基-4-叔丁基-2-氨基噻唑的合成与表征

溴化铜在乙醇中溴化4,4-二甲基-1-芳基-3-戊酮,得到α-溴化产物不经分离直接与硫脲环合制得9种2-氨基噻唑类新化合物,收率21.9%~92.9%.目标物2-氨基噻唑类化合物经核磁谱、红外光谱、质谱测定其结构.用单晶X-射线衍射测定了化合物1g.HBr的晶体结构.化合物1g.HBr晶体属单斜晶系,空间群为P2(1)/c,晶胞参数为:a=0.96 713(5)nm,b=1.558 25(8)nm,c=1.306 87(7)nm,Z=4,V=1.665 34(15)nm3,Dc=1.577 g/cm3,F(000)=800,R1=0.0313,ωR2=0.0757,S=1.024.     

高产率合成5-(4-氨基-苯基)-10,15,20-三苯基卟啉

报道了一种非常重要的中间体:5-(4-氨基-苯基)-10,15,20-三苯基卟啉的高产率合成方法,产率达95.2%(以5-(4-硝基-苯基)-10,15,20-三苯基卟啉计),总产率为19.5%(以吡咯计).通过红外光谱、紫外-可见光谱、元素分析对目标产物进行了表征,并且讨论了影响目标产物产率的因素.     

邻香兰素缩对甲苯胺及其醋酸铜配合物的固相合成

在低热固相条件下,由邻香兰素与对甲苯胺合成了Schiff碱配体--邻香兰素缩对甲苯胺(HL,C15H15NO2);用该配体与醋酸铜晶体(Cu(Ac)2·H2O)反应制得了配合物.用元素分析、Ⅹ-射线衍射、差热-热重分析、红外光谱和摩尔电导进行表征,确定配合物的化学组成为CuL2,并推断了其结构,讨论了反应机理.     

4-羟基-4-[2-(炔丙基氧基)苯基]丁-2-酮的合成及晶体结构

将3-溴丙炔分别与水杨醛和香草醛反应,分别获得4-羟基-4-[2-(炔丙基氧基)苯基]丁-2-酮(1)和3-甲氧基-4-(炔丙基氧基)苯甲醛(2).通过元素分析、红外光谱、核磁共振氢谱和X射线单晶衍射等手段对其结构进行了表征.结果表明:化合物1除了苯环C原子以外的剩余C原子都处于苯环的同侧,丁基碳链以锯齿形排布;化合物1和2的炔丙基分别保持在一条直线上.     

(Z)-3-丁烯基-4-羟基苯酞的合成与表征

用 3-羟基邻苯二甲酸酐为原料 ,仅通过两步反应 ,区域和立体选择性地得到天然产物 (Z) -3-丁烯基 -4 -羟基苯酞。并通过 IR光谱、NMR谱和质谱对其组成与结构进行了确认和表征。     

稀土-4′,4′-联吡啶-2-羟基-3-萘甲酸固体配合物的合成与表征

以95%的乙醇为溶剂合成了4,4′-联吡啶(bipy)、2-羟基-3-萘甲酸(HL)与稀土(RE=La,Nd,Sm,Tb)的三元固体配合物.元素分析确定了它们的化学组成为REL3bipy.nH2O(n=2,3).通过摩尔电导、红外光谱、紫外光谱、热分析,对其性质进行了研究.     

甲基苯丙15-冠-5与Na2[M（SCN）4]（M=Pd,Pt）配合物的合成、表征及其与DAN的相互作用

以甲基苯并15-冠-5(MB15-C-5)和Na2[M(SCN)4](M=Pd,Pt)为原料,合成了冠醚配合物:[Na(MB15-C-5)(H2O)]2[Pd(SCN)4]1和[Na(MB15-C-5)(H2O)]2[Pt(SCN)4]2.通过元素分析、红外光谱、核磁共振氢谱、差热-热重(TG-DTA)等测试方法对其结构进行表征.研究了配合物1与小牛胸腺DNA(CT-DNA)的作用,结果表明配合物1与DNA具有较强的相互作用.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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