CdI2与TSC加成物的合成及结构

ＣｄＩ２与ＴＳＣ在丙酮溶剂及水中形成加成物ＣｄＩ２（Ｃ４Ｈ１０Ｎ３Ｓ）２·Ｈ２Ｏ,晶体属单斜晶系,空间群为Ｐ２１／ｍ．晶胞参数为ａ＝０．７５３３（３）ｎｍ,ｂ＝１．５３５（２）ｎｍ,ｃ＝０．８４３７（２）ｎｍ,β＝９０．９１（３）°,ｖ＝０．９７６（１）ｎｍ３,Ｍｒ＝６４８．６４,Ｚ＝２,Ｄｃ＝２．２０ｇ·ｃｍ－３,μ（ＣｕＫα）＝４４．５８ｃｍ－１,Ｆ（０００）＝６０８,Ｔ＝２９７Ｋ．用１６２２个Ｉ≥３σ（Ｉ）独立衍射精修结构,最终偏差因子Ｒ＝０．０５７,晶体中存在分离的单核络合物ＣｄＩ２（Ｃ４Ｈ１０Ｎ３Ｓ）２·Ｈ２Ｏ,Ｃｄ原子呈畸变四面体配位．两个Ｃｄ－Ｉ和Ｃｄ－Ｓ键长分别为０．２７３０ｎｍ,０．２７４３ｎｍ和０．２５７５ｎｍ．     

双核铜配合物[Cu（C6H5COO）2（C5H6N2）]2（C4H8O）2的合成,结构和性质

在配体存在下，通过金属铜粉和过氧化苯甲酰的氧化加成反应合成了双核铜配合物［Ｃｕ（Ｃ６Ｈ５ＣＯＯ）２（Ｃ５Ｈ６Ｎ２）］２·，以元素分析、电导、热重－差热分析、红外光谱、磁性及粉末衍射对配合物进行了表征，并经Ｘ－射线单晶结构分析，确定了配合物的结构，晶体属于三斜晶系，空间群为Ｐ—１，分子式为Ｃ４６Ｈ４８Ｎ４Ｏ１０Ｃｕ２，Ｍｒ＝９４３．９３，ａ＝１０．８０６（１）ｋｂ＝１１．１６９（３），Ｃ＝１１．７２９（２）Ａ，α＝７１．９９（２），β＝８９．３８（１），γ＝８１．３７（１）°，Ｖ＝１３３０．１Ａ３，Ｄｃ＝１．１７２ｇ／ｃｍ３，Ｒ＝０．０４３２９，Ｒｗ＝０．０４８６０，Ｆ（０００）＝４９０，μ＝８．５ｃｍ－１，Ｚ＝１，两个铜原子的配位环境相同，由羧酸根的四个氧原子和２－氨基吡啶的氮原子形成五配位的四方锥多面体。     

Tb（Ⅲ）配合物[Tb（C18H20N2O4）（NO3）3]的合成和晶体结构

合成了配合物［Ｔｂ（Ｃ１８Ｈ２０Ｎ２Ｏ４）（ＮＯ３）３］,配体为２羟基３甲氧基苯甲醛与乙二胺缩合而成的双希夫碱．配合物晶体为单斜晶系,空间群Ｐ２１／ｎ,ａ＝１４１８６（３）ｎｍ,ｂ＝１１８４８（２）ｎｍ,ｃ＝１４６２６（３）ｎｍ,β＝１０４３５（３）°,Ｖ＝２３８２（１）ｎｍ３,Ｄｘ＝１８７２ｇ／ｃｍ３,Ｚ＝４,μ＝３０７５５ｍｍ－１,Ｆ（０００）＝１３２０,Ｒ＝００４７,Ｒｗ＝００５６．Ｔｂ（Ⅲ）的配位数为１０,配位几何构型为双帽四方反棱柱．所有配位原子都是氧原子．对该配合物进行了差热热重分析．     

水杨叉乙二胺Schiff碱（SEDA）铜配合物的单晶结构

合成标题化合物［（ｓｅｄａ）Ｃｕ］·ＥｔＯＨ,并得到单晶［ｓｅｄａ＝Ｎ,Ｎ′－二水杨叉基－１,２－二－（４－甲氧基苯基）乙二胺］．Ｘ－衍射结构分析表明,晶体属正交晶系,空间群Ｐｂｃａ,晶体学数据：ａ＝２．０１１５（４）ｎｍ,ｂ＝１．３１９６（３）ｎｍ,ｃ＝２．１０５７（４）ｎｍ,晶胞体积Ｖ＝５．５８９（３）ｎｍ３,分子量５８８．１６,Ｚ＝８,Ｄｘ＝１．３９８ｇ／ｃｍ３,μ＝８．２３９ｃｍ－１,Ｆ（０００）＝２４６５,最终偏离因子Ｒ＝０．０７９,Ｒｗ＝０．０８３,（Δ／σ）ｍａｘ＝０．６８．结构分析表明,配体中二个偶氮甲碱中氮原子和二个酚氧原子与中心Ｃｕ原子配位,形成规则的菱形平面结构．     

二种硼化物的电子自旋共振波谱研究

用ＥＳＲ（ＥｌｅｃｔｒｏｎＳｐｉｎＲｅｓｏｎａｎｃｅ）波谱研究（Ｃ２Ｈ５）４ＮＢ１０Ｈ１０Ｃｕ和（ＣＨ３）４ＮＢ１２Ｈ１２Ｃｕ的结构和化学键．结果表明该系列化合物中１１Ｂ和１４Ｎ核与Ｃｕ２＋之间不是以共价键或者离子键形式直接连接,很可能存在着ＣｕＨＢ桥键,但Ｃｕ２＋和１Ｈ之间的作用比较弱．（ＣＨ３）４ＮＢ１２Ｈ１２Ｃｕ中Ｃｕ２＋位于Ｂ１２Ｈ１２２－轴对称性配位场中,因而有较高的对称性和稳定性;（Ｃ２Ｈ５）４ＮＢ１０Ｈ１０Ｃｕ中Ｃｕ２＋位于Ｂ１０Ｈ１０２－非轴对称性配位场,并且Ｃｕ２＋彼此之间相距较近     

多聚配合物[Cd(β-ala)Cl_2]的合成与晶体结构

多聚配合物［Ｃｄ（β－ａｌａ）Ｃｌ２］用ＣｄＣｌ２与β－丙氨酸（β－ａｌａ，Ｈ３Ｎ＋ＣＨ２ＣＨ２ＣＯ２－）在水溶液反应制得，并用单晶结构分析法测定其结构．该配合物的化学式为Ｃ３Ｈ７ＣｄＣｌ２ＮＯ２，属正交晶系，空间群为Ｐｎｍａ（Ｎｏ．６２），ａ＝６９４．４（１），ｂ＝７９６．３（２），ｃ＝１２９３．１（３）ｐｍ，Ｖ＝０．７１５０（６）ｎｍ３，Ｚ＝４，Ｍｒ＝２７２．４０，Ｄｃ＝２．５３０Ｍｇ／ｍ３，用８３４独立衍射数据对结构进行精化，最后残差因子Ｒ１＝０．０４２１．结果表明，每个镉离子与４个Ｃｌ和２个β－ａｌａ的羧基氧原子配位，呈变形八面体结构．每对镉离子由２个Ｃｌ和１个双齿羧基桥连，形成一维链状聚合结构     

苯甲酰丙酮，氨基吡啶与Cu（Ⅱ）的双核配合物的合成和磁性

合成了含有Ｃｌ－桥联配体的两个新的双核配合物：Ｃｕ２（ａｍｐｙ）２Ｃｌ４·１／２Ｃ２Ｈ５ＯＨ（ａｍｐｙ＝α－氨基吡啶）和Ｃｕ２［Ｎ，Ｎ’ｂｉｓ（ａｍｐｙ）－ｂｚａｃ（Ｈ２Ｏ）］Ｃｌ４·Ｃ２Ｈ５ＯＨ（ｂｚａｃ＝苯甲酰丙酮）．通过元素分析、ＩＲ、ＥＳＲ和室温磁化率表征，测定了这两个配合物的变温磁化率（４～３００Ｋ），其数值用最小二乘法与从自旋Ｈａｍｉｌｔｏｎｉａｎ算符导出的磁化率理论曲线拟合很好；求得了交换积分，对于配合物Ｃｕ２（ａｍｐｙ）２Ｃｌ４·１／２Ｃ２Ｈ５ＯＨ，Ｊ＝－４．７６Ｃｍ－２；对于Ｃｕ２［Ｎ，Ｎ’ｂｉｓ（ａｍｐｙ）－ｂｚａｃ（Ｈ２Ｏ）］Ｃｌ４·Ｃ２Ｈ５ＯＨ，Ｊ＝－４．７２ｃｍ－２，表明两个配合物中Ｃｕ（Ⅱ）－Ｃｕ（Ⅱ）核间有反铁磁相互作用．     

铜（Ⅱ）配合物[Cu（C8H4O2SF3）2]的合成,表征和晶体结构

室温下，金属铜粉和２－噻吩甲酰三氟丙酮在甲醇溶剂中反应生成铜配合物［Ｃｕ（Ｃ８Ｈ４Ｏ２ＳＦ３）２］通过元素分析，红外光谱、热重、Ｘ－射线粉末衍射对其进行表征，并经Ｘ－射线单晶测试该配合物为单斜晶体，空间群为Ｐ２１／Ｃ，晶胞参数ａ＝１０．５８２（１），ｂ＝１１．１６９（２），ｃ＝８．０４４（３）；β＝１０４．６１（２）°；Ｖ＝９１６．７３；ｚ＝２；Ｄｃ＝１．８３３ｇ·ｃｍ－３；Ｒ＝０．０８２，Ｒｗ＝０．０９２。铜原子与四个氧原子配位，形成四方平面     

［Ag_2（α－Ph_2PPy）_2］_2（NO_3）_4的合成和晶体结构

ＡｇＮＯ＿３和ａ－ｐｈ＿２ｐｐｙ，（ａ－（Ｃ＿６Ｈ＿５）＿２Ｐ（ＮＣ＿５Ｈ＿５））在加有少量Ｈ＿２Ｏ＿２和ＮａＯＨ的Ｃ＿２Ｈ＿５ＯＨ水溶液中反应生成标题化合物的灰黑色晶体。属四方晶系，空间群Ｐ４＿１，ａ＝１．３００ｎｍ，Ｃ＝４．０７６ｎｍ，ｖ＝６．８８４ｎｍ￣３，Ｚ＝８，Ｄ＿ｃ＝１．６７ｇｃｍ￣（－３），Ｒ＝０．０５９，ｒ＿ω＝０．０７２．每一不对称单元中存在二套独立而结构基本相同的［Ａｇ＿２（ａ－ｐｈ＿２ＰＰｙ）＿２］￣２＋，它的二个Ａｇ原子和二个ａ－ｐｈ＿２ＰＰｙ中－Ｎ－Ｃ－Ｐ－桥的Ｎ，Ｐ原子联接成为一个稳定非共面八员环，而环内Ａｇ，Ａｇ间距分别是０．３１４，０．３ｌ０（ｎｍ），均未成键。不对称单元中的二个八员环通过的Ｏ原子与环上Ａｇ原子的弱成键而具有结构联系。环内还出现了罕见的三配位Ａｇ原子。     

2′－6′－二乙胺基萤烷的合成及晶体结构研究

利用Ｘ－射线衍射分析测定了标题化合物的晶体结构．Ｃ２４Ｈ２０ＮＯ３Ｃｌ属单斜晶系，空间群Ｐ２１／ｎ，Ｍｒ＝４０５．８８，ａ＝１１．６２５（３），ｂ＝１３．８４４（３），ｃ＝２２．６４３（４）×１０－１０ｍ，β＝９４．８０（２）°，Ｖ＝２０１５．（１）×１０－３０ｍ３，Ｚ＝４，Ｆ（０００）＝８４８，Ｄｃ＝１．３３ｇ／ｃｍ３，Ｒ＝０．０８４和Ｒｗ＝０．０９６．含有氧的六圆环为半椅式构象，五圆环和它相邻的苯环几乎共面．Ｃ（１４）与Ｏ（１），Ｃ（２１）与Ｏ（１）为典型的Ｓｐ２－Ｓｐ２键，使相邻两个苯环之间产生了共轭     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to