两个新的镍和铜配位聚合物的合成与表征

通过 1,4 二 (1 H 苯并三氮唑基 )丁烷 (L)与KSCN和Ni(NO3 ) 2 ·6H2 O或L与Cu(CH3 COO) 2 ·2H2 O自组装得到了两个配位聚合物 过元素分析 ,IR ,UV和热分析确定它们的化学式分别为 [NiL2 (NCS) 2 ]n(a)和[CuL(CH3 COO) 2 ]n(b) .     

含有半胱氨酸配体的钼硫配合物的合成、光谱及电子结构

报道了以半胱氨酸配体的Mo/S（O）配合物K2[Mo2O2S2（SCH2CH（NH2）COO）]·4H2O·CH3OH的合成、结构及表征,并用EHMO方法研究了配合物的电子结构,首次把羧基的键序与该配合物的羧基红外振动峰相关联,较好地解释了该配合物的羧基红外振动峰是一宽峰且有劈裂的特点.     

羧酸铕配合物的合成、表征及光致发光

合成了Eu( )与β-苯甲酰丙酸,β-苯甲酰丙烯酸,邻苯甲酰苯甲酸的固态配合物.经元素分析、稀土络合物滴定、核磁共振氢谱和热谱分析确定其组成为:OOCHCHCOO)3.H2O、EuCEu(C6H5CH2CH2COO)3.H2O、CEu(C6H5O(CC6H5C6H4COO)3·H2O.红外光谱表明,配体通过羧基氧与铕离子配位,羧基以双齿配位.配合物的荧光光谱表明,邻苯甲酰苯甲酸铕的荧光发射强度在三个系列中最强,并从配体结构出发,探讨了该荧光强弱顺序的成因,合理的解释了实验结果.     

有机-无机杂化纳米材料的制备、表征及性质

利用低温固相反应首次制备了 [(CH3 ) 4 N] 3 PW12 O4 0 ·6H2 O(Ⅰ ) ,[(CH3 ) 4 N] 6P2 Mo18O62 ·9H2 O(Ⅱ ) ,[HMTAH2 ] 2 ·SiW12 O4 0 ·7H2 O(Ⅲ )等纳米粒子 ,并用红外光谱、透射电镜、X射线粉末衍射等手段进行表征 .结果表明 ,粒子大小均一 ,平均粒子直径为 4～ 8nm ,并具有潜在的电荷转移盐性质及非线性光学性质 .     

簇合物[Et4N]4[WS4Cu5.5Br3.5(NCS)4(H2O)0.5]·0.5Et2O的合成及其晶体结构

报道了由[Et4N]2WS4、CuSCN、Et4NBr和NH4SCN合成的标题簇合物[Et4N]4[WS4Cu5.5Br3.5(NCS)4(H2O)0.5]·0.5Et2O(1),并测定了其晶体结构.该晶体属三斜晶系,空间群为P-1,a=1 29581(11)nm,b=1.35388(9)nm,c=1.9644(2)nm;α=79.769(9)°,β=89.080(13)°,γ=86.063(13)°,V=3.3834(5)nm3,Z=2.该簇合物阴离子[WS4Cu5.5Br3.5(NCS)4(H2O)0.5]4-是由两个网兜状[WS3Cu3]骨架和两个"半开口"立方烷状[WS3Cu3Br]骨架组成的混合结构.W…Cu距离在0.2664(2)～0.2716(2)nm之间.     

稀土金属离子钇(Ⅲ)-氨基多羧酸配合物结构的研究

介绍了稀土金属离子YⅢ 与一系列氨基多羧酸类配体形成配合物的合成及分子结构和晶体结构 ,并讨论了这些配合物的配位规律及形成原因 .发现具有 0 .10 4nm离子半径和d0 电子结构的稀土金属YⅢ离子一般情况下与氨基多羧酸类配体形成九配位结构的配合物 ,如K3 [YⅢ(nta) 2 (H2 O) ]·6H2 O(nta =氨三乙酸 ) ,Na[YⅢ(edta) (H2 O) 3 ]·5H2 O(edta =乙二胺四乙酸 ) ,K2 [YⅢ(dtpa) (H2 O) ]·7H2 O(dtpa =二乙三胺五乙酸 ) ,K4[YⅢ2 (Httha) 2 ]·14H2 O(ttha =三乙四胺六乙酸 )和 (NH4) 2 [YⅢ(NH4ttha) ]·5H2 O等 ,但与具有一定刚性的环己烷环的cydta(=反式 1,2 环己二胺四乙酸 )配体却形成了八配位NH4[YⅢ(cydta)(H2 O) 2 ]·4 .5H2 O配合物 .另外 (NH4) 2 [YⅢ(NH4ttha) ]·5H2 O配合物中具有可用于修饰的未配位的自由羧酸基 ( CH2 COO-) .     

配位聚合物[Ni（4，4′-bpy）（H2O）4]·（SO4^2-）·（CH3OH）·（H2O）的合成与晶体结构

通过NiSO4·6H2O与4,4'-联吡啶在H2O-CH3OH混合溶液中反应,制备了配位聚合物[Ni(4,4′-bpy)(H2O)4]·(SO42-)·(CH3OH)·(H2O),并使用X射线单晶衍射技术对其结构进行了表征.此配合物含有三种分别沿[100]、[010]、[110]方向排列的无限长链,并通过其配位水分子与位于层间位置的SO42-形成氢键而连接成为超分子结构.     

羧基桥联的双核Cu（Ⅱ）配合物的合成及性质初步研究

合成了二个新的一个分子中含有二个羧基桥联的双核 Cu(Ⅱ)配合物[Cu(Phen)(HCOO)]_2·(NO_3)_2·3H_2O(1),[Cu(Phen)(CH_3COO)]_2·(NO_3)_2·3H_2O(2)和一个一分子中含有一个羧基桥和一个羟基桥的双核 Cu(Ⅱ)配合物[Cu_2(OH)(C_2H_5COO)(Phen)_2]·(NO_3)_2·H_2O(3)以及单核 Cu(Ⅱ)配合物[Cu(Phen)(CF_3COO)]·(NO_3)·H_2O(4)(其中 Phen 为2,9-=甲基-1,10-啡罗啉).通过元素分析,等离子光谱、红外光谱,TG 及 X-射线粉末衍射分析对四个配合物进行了初步表征,测定了它们的氧化还原电位及电导.通过分析讨论,确定了配合物中羧基的配位方式.     

水杨酸锰的流变相合成及其热分解机理

用流变相反应法合成了水杨酸锰配合物.通过元素分析、TG确定该配合物的组成为Mn(HSal)2·2.5H2O(HSal=o-OHC6H4COO);XRD确定该配合物为单斜晶系,晶胞参数为a=1.8935(4)nm,b=6.1790(2)nm,c=17.3256(1)nm,β=114.93°,V=1.8382(3)nm3,Z=6,Dcalc=1.775kg/dm3,Dexp=1.769kg/dm3;IR研究表明配合物中羧酸根与Mn2+是以双齿螯合方式配位.样品的热分解实验表明该配合物的热分解机理为Mn(HSal)2·2.5H2O90～160℃Mn(HSal)2180～270℃MnSal+H2Sal;MnSal290～335℃MnO+有机化合物.+2.5H2O;Mn(HSal)2     

含钼、钨和钒的Keggin结构杂多酸荷移配合物的合成与表征

合成了 2个Keggin结构混合多阴离子的喹啉电荷转移配合物 .经元素分析和热重分析 ,确定了其元素构成和配合物的分子组成 .并对其进行了IR ,UV ,DRUV Vis,XPS和ESR表征 .结果表明 ,在受体多酸和给体喹啉之间存在较强的相互作用并发生了电子转移 ,(C9H7N) 4 H3 PMo6W6O40 ·9H2 O中Mo+ 6为电子受体并被部分还原为Mo+ 5,而 (C9H7N) 5 5H5PMo1 0V2 O40 ·5 5H2 O·CH3 CN中V+ 5为电子受体并被部分还原为V+ 4 ,2种电荷转移配合物中杂多阴离子都仍然保持Keggin结构     

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…     

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。     

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     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

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.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.