5-甲基四氮唑铜(Ⅰ)配合物的合成、晶体结构及性质

以乙腈和叠氮化钠反应生成的5-甲基四氮唑(Mtta)为配体,以乙酸铜作为金属离子源,通过溶剂热法合成了一个金属铜配合物[Cu(Mtta)]n(1),并通过元素分析、红外和X-射线单晶衍射对其结构进行表征。配合物1为单斜晶系,P2/c空间群,晶胞参数a=0. 941 02(4) nm、b=1. 606 23(6) nm、c=1. 119 62(5) nm、β=124. 08(8)°、V=1. 401 69(10) nm3,晶胞个数是4个,密度为2. 084 g·cm-3,吸收系数为4. 523 mm-1,残差因子为0. 020 1,可观测衍射点的拟合优度为1. 03。配合物1中的每个Cu原子分别与四个不同的5-甲基四氮唑配体上的一个N原子进行配位,形成一个四面体构型Cu N4。对配合物1的荧光光谱结果进行分析,配合物1的DMF溶液(浓度为5×10-7mol/L)在发射波长为579 nm处,具有较强的荧光性。     

Cu(Ⅱ)-邻-N-水杨醛烯基苯酚配合物的结构和荧光性质

以合成的邻-N-水杨醛烯基苯酚和咪唑为配体,与Cu( )离子自组装形成配合物Cu(C13H9NO2)(C3H4N2).X-射线单晶衍射表明,配合物晶体属正交晶系,空间群为Pca21,晶胞参数:a=0.93944(1.4)nm,b=1.7579(0.3)nm,c=1.8261(0.3)nm,V=3.0158(8)nm3,Mr=342.84,Z=4,ρcalc=1.510mg/m3,R1=0.0641,wR2=0.1357.在配合物结构中,三齿Schiff碱配体中的两个氧原子、一个氮原子和咪唑的一个氮原子分别与铜( )离子配位,形成扭曲的平面正方形结构.配合物分子通过π-π堆积作用形成三维堆积超分子结构.晶体的荧光光谱表明,配体共轭体系在配位后扩大了共轭面,从而使波长红移,刚性面的增加使荧光强度增强.     

3-溴-5-氯水杨醛缩2,4-二甲基苯胺铜配合物的合成及晶体结构研究

目的合成一种新Schiff碱铜配合物。方法以3-溴-5-氯水杨醛,2,4-二甲基苯胺和金属Cu(II)离子为原料合成一种新的Schiff碱金属铜配合物,用X-射线单晶衍射法对其结构进行表征。结果标题化合物属于单斜晶系,空间群P21/c,晶胞参数a=1.219 4(1)nm,b=1.221 2(1)nm,c=1.993 4(2)nm,β=94.830(1)°,V=2.957 8(5)nm3,Dc=1.659 g/cm3,Z=4,μ=3.651mm-1,F(000)=1 468,R=0.037 7,wR=0.073 7。结论该化合物由2个双齿Schiff碱配体和1个Cu(II)离子组成。中心Cu(II)离子与2个双齿Schiff碱配体的2个亚氨基N原子及2个酚氧基O原子配位,配位数为4,呈平面四方构型。     

一个新型三硫醚配体-银（I）配位聚合物的合成、表征与晶体结构

报道了一个基于柔性三硫醚配体(L=1 ,3,5 -三(苯基硫代亚甲基) - 2 ,4,6-三甲基苯)的新型Ag 配合物{[Ag3 (L ) 2 (Cl O4) 2 ](Cl O4) }∞(1 )的合成与结构表征.X-射线单晶衍射结果表明,配合物1为单斜晶系,C2 /c空间群,晶胞参数为a=3.4931 (7) nm,b=2 .1 5 84(8) nm,c=2 .8782 (4)nm,β=1 2 3.688(1 0 ) o,V=1 8.0 5 6(3) nm3 ,Z=8.配合物1的不对称单元中存在3个晶体学独立的Ag 离子,其中一个为四配位,另外两个具有线性二配位模式.每个配体中的3个硫原子通过与其邻近的3个Ag 离子配位,形成由6个金属离子和6个配体所组成的六边形48元大环重复单元,并且通过这种重复单元构成具有(6,3)拓扑结构的二维无限蜂窝状配位网络     

新型三吡唑硼酸根和二吡唑硼酸根混合配体“三明治”型铜（Ⅱ）配合物

合成了一种新型Ⅱ三吡唑硼酸根和二吡唑硼酸根混合配体的"三明治"型铜(Ⅱ)配合物[TpcuⅡBp] (Tp:三吡唑硼酸根,hydrotris(pyrazolyl)borate;Bp:二吡唑硼酸根,bihydrobis(pyrazolyl)borate).配合物的晶体结构由单晶X-射线衍射确定,配合物属于正交晶系·Pbca空间群,其晶胞参数为a=1.541 1(4)nm,b= 1·365 9(4)nm,c=1.873 2(5)nm,Z=8,R1=0.041 7,wR2=0.085 6.配合物中Cu(Ⅱ)分别与Tp的三个吡 唑环上的三个N原子、Bp的两个吡唑环上的两个N原子配位,形成变形四方锥配位环境(τ=0.069),Tp的一个吡唑环上的N(5)原子占据着轴向位置.用红外光谱、紫外一可见光谱、电子顺磁共振等对配合物进行了表征.     

一维链状Cd(Ⅱ)金属有机配合物的合成与晶体结构

通过水热法合成了一个金属有机配合物[Cd(C6H5N2O4)(C10H8N2)],通过元素分析和X射线单晶衍射技术对该化合物进行了结构表征.结果表明该化合物晶体属正交晶系,空间群为Pbca,a=1.052 75(5)nm,b=1.528 02(8)nm,c=1.973 83(10)nm,α=β=γ=90°,V=317.51(8)nm,Z=8,Dc=1.827g.cm-3,μ=1.406mm-1,F(000)=1 728,R=0.027 4,wR=0.063 4.它是由一个Cd(II)、2个2-甲基-4,5-咪唑二羧酸配体和1个2,2′-联吡啶配体构成,通过2个Cd(II)中心金属离子分别与同一个2-甲基-4,5-咪唑二羧酸配体的2个羧基相连接形成一维链状结构.     

水杨醛缩乙醇胺Schiff碱铜配合物的晶体结构和电化学性质

合成了具有二维层状结构的乙醇胺Schiff碱铜配合物[Cu(Hsae)2](H2sae=水杨醛缩乙醇胺).单晶衍射结果表明,该配合物属于单斜晶系,空间群P2(1)/c,晶胞参数:a=1.832 90(8)nm,b=0.481 11(2)nm,c=1.979 45(7)nm,β=98.884 0(10)°,Z=4.中心铜原子通过Schiff碱配体的两个氧原子和两个氮原子形成平行四边形的配位环境.配合物通过分子间氢键形成二维层状结构.循环伏安实验表明配合物在-0.79 V和-1.19 V处分别出现两个不可逆还原峰.     

基于4-(1H-1,2,4-三氮唑)苯甲酸的Zn(Ⅱ)配合物的合成及晶体结构

以4-(1H-1,2,4-三氮唑)苯甲酸(HL)为配体合成了新型配合物[ZnL_2(H_2O)_4](1),并用红外光谱、元素分析和X射线单晶衍射进行了表征.单晶结构分析表明:该配合物属三斜晶系,P-1空间群,晶胞参数:a=0.615 60(5)nm,b=0.698 49(6)nm,c=1.209 01(11)nm,$=80.649 0(10)°,β=87.959(2)°,%=72.057 0(10)°,V=0.487 95(7)nm~3.配合物中Zn(II)与来自于两个4-(1H-1,2,4-三氮唑)苯甲酸根的两个N原子以及四个配位水分子的O原子配位,处于变形八面体环境中;配合物1通过分子间氢键形成三维超分子结构.     

一维螺旋配合物{[AgL](ClO4)(H2O)}n的合成和晶体结构

二硫醚配体2,3-二苯硫甲基喹喔啉与高氯酸银反应合成出配合物{[AgL](ClO4)(H2O)}n.用X射线衍射方法测定了配合物的晶体结构.配合物为四方晶系,空间群为I4(1)/a,晶体学参数:a=2.375 5(2)nm,b=2.375 5(2)nm,c=2.369 5(4)nm,V=13.371(2)nm3,Z=16.晶体结构研究表明配合物为一维螺旋结构.     

铋(Ⅲ)-8-羟基喹啉配合物的合成、晶体结构及荧光性质

在乙醇体系中,由硝酸铋和8-羟基喹啉(HQ)反应,合成了[Bi(NO_3)Q_2]·H_2O铋(Ⅲ)-8-羟基喹啉配合物.用元素分析、红外光谱、粉末X-射线衍射和单晶X-射线衍射对配合物进行了表征和结构分析.单晶X-射线衍射分析结果表明,该配合物属于单斜晶系,C2/c空间群,a=2.445 04(13)nm,b=0.819 6(4)nm,c=2.071 8(10)nm,β=118.406(5)°,V=3.651 9(3)nm3,Z=8,F(000)=2 192,μ(Mo Kα)=9.698 mm-1.测定了配体、标题配合物及铕掺杂(摩尔分数:5%,10%,15%,20%)配合物的荧光光谱,结果表明,无论是标题配合物还是铕掺杂的配合物均显示配体的荧光,既没有铋离子的特征发射,也没有铕离子的特征发射.说明配合物的荧光是配体的荧光;而配合物的荧光强度大于配体,说明金属离子对配体的荧光有敏化作用.     

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.     

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.     

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.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.