[Co(aippma)(amp)Cl][ZnCl4]体系配合物中一异构体的晶体结构解析

用过氧化物分解法合成得到了[Co(aippma)(amp)Cl][ZnCl4](aippma=N-(2-氨异丙基)-2-呲啶甲胺,amp=2-(氨甲基)吡啶)体系中的异构体,解析了其中的一个异构体的晶体结构为面式异构体(f3′″).晶体学参数单斜晶系,空间群P21/n,a=1.080 28(10)nm,b=1.848 43(18)nm,c=1.255 82(12)nm,α=90.00°,β=97.150(2)°,γ=90.00°,V=2.488 1(4)nm3,Dc=1.620 g·cm-3,Z=6,F(000)=1 224,R=0.036 1,wR=0.0974,晶胞中含4个配合物阳离子,4个[ZnCl4]2-阴离子及8个水分子,异构体中Co3+为六配位,且配合物阳离子中具有C-H…π结构.     

夹心结构杂多化合物N(CH3)4Na6[Na3{Co(H2O)}2WOH2O(AsW9O33)2]·35H2O的晶体结构及表征

在 p H≈ 6.5及稀土盐 Gd Cl3 · 6H2 O或 Ce( NO3 ) 3 · 6H2 O的存在下 ,Na2 WO4· 2 H2 O与Na As O2 及 Co( NO3 ) 2 · 6H2 O反应 ,得到了夹层型杂多钨酸盐 N( CH3 ) 4 Na6[Na3 {Co( H2 O) }2 WO( H2 O) ( As W9O3 3 ) 2 ]· 35 H2 O单晶 ,用 X射线单晶衍射法及元素分析确定了其结构 ,晶胞参数为 :a=1 .395 ( 1 8) nm,b=1 .90 ( 2 ) nm,c=2 .2 9( 3) nm,α=1 0 2 .3( 4 )°,β=94.7( 3)°,γ=1 0 5 .3( 3)°,V=5 .65 6( 1 2 5 ) nm3 ,Z=2 ,空间群 Pī,R1=0 .0 60 0 ,w R2 =0 .1 2 0 7( I>2σ)。[Na3 {Co( H2 O) }2 WO( H2 O) ( As W9O3 3 ) 2 ]7-具有 C2 v对称性 ,Co2 +的配位数均为 5 .对题示化合物进行了 IR,UV- Vis表征 ,讨论了其形成条件     

化合物[Ni(tn)3]2 [Re6 Se8(CN)6]的合成与晶体结构

用Na4[Re6Se8(CN)6]与1,3-丙二胺(tn)和氯化镍反应得到化合物[Ni(tn)3]2 [Re6 Se8(CN)6], 对其进行了X-Ray射线晶体结构测定,表明化合物属三斜晶系、P1-空间群,晶胞参数为a=10.7511(4) (A), b=10.7813(6) (A), c=12.7072(8) (A), α=66.294(3)°, β=74.610(3)°, γ=88.801(3)°. Z=1, R=0.0985, wR2 = 0.2386.     

[Co(amp)_2Cl_2]_2[ZnCl_4]体系中一异构体的晶体结构

用单晶X-射线衍射分析方法解析了[Co(amp)2Cl2 ]2 [ZnCl4 ] (amp=2-胺甲基吡啶)体系中一异构体。该晶体属正交晶系,空间群Pccn,a=13 138(5) ,b=13 410(6) ,c=10 954(5) ,α=90°,β=90°,γ=90°,V=1929 8(14) 3,Dc=1 647g/cm3,Z=4,F000 =968,R=0 046,Rw=0 1194。     

一种β-二亚胺钴配合物的合成与结构研究

合成了新的 β-二亚胺钴配合物 Co{ HNC(Ph) CHC[C(CH3) 3]NH} 2 ,其分子结构由单晶 X-射线衍射进行了表征 ,晶体数据如下 :C2 6 H34 Co N4 ,FW =4 6 1.5 ,三斜晶系 ,空间群 P(- 1) ,单胞参数 :a=5 .90 4 3(12 ) ,b=8.3890 (17) ,c=12 .72 4 (3) ,α=75 .75 (3)°,β=83.4 2 (3)°, =78.13(3)°;V =5 96 .5 (2 ) 3,Z=1,De=1.2 85 m g/ m3,μ=0 .739mm- 1 ,F(0 0 0 ) =2 4 5 ,T=2 93(2 ) K,独立衍射点 2 4 33[I>2 sigm a(I) ],R =0 .0 385 m m ,Rw =0 .0 74 9.     

Na_9[Na_3{Co(H_2O)}_3(AsW_9O_(33))_2]·44H_2O的晶体结构及表征

在 p H≈ 6 .5及稀土盐的存在下 ,用 Na2 WO4 · 2 H2 O与 Na As O2 及 Co(NO3 ) 2 · 6 H2 O反应 ,得到了夹层型杂多钨酸盐 Na9[Na3 { Co(H2 O) } 3 (As W9O3 3 ) 2 ]· 44H2 O单晶 ,用 X射线单晶衍射法及元素分析确定了其结构 ,晶胞参数为 :a=1 .40 83 (6 ) nm,b=2 .3 2 4 1 (6 ) nm,c=3 .2 1 97(1 0 ) nm,α=90°,β=98.995 (6 )°,γ=90°,V=1 0 .40 8(6 ) nm3 ,Z=4,空间群 C2 /c,R1 =0 .0 6 0 4 ,w R2 =0 .0 792 (I>2 σ) .[Na3 { Co(H2 O) } 3 (As W9O3 3 ) 2 ]9-具有近似 D3 h对称性 ,Co2 +的配位数均为 5 .对题示化合物进行了 IR,UV- Vis表征 ,讨论了其形成条件     

[Co(amp)2Cl2]2[ZnCl4]体系中一异构体的晶体结构

用单晶X-射线衍射分析方法解析了[Co(amp)2Cl2]2[ZnCl4](amp=2-胺甲基吡啶)体系中一异构体.该晶体属正交晶系,空间群Pccn,a=13.138(5)(A),b=13.410(6)(A),c=10.954(5)(A),α=90°,β=90°,γ=90°,V=1929.8(14)(A)3,Dc=1.647g/cm3,Z=4,F000=968,R=0.046,Rw=0.1194.     

25,27-二间氰基苯甲氧基杯〔4〕芳烃的合成与晶体结构

报道 2 5,2 7-二间氰基苯甲氧基杯〔4〕芳烃 (C4 4H3 4N2 O4 )的合成 ,并用 X-射线研究其晶体结构 ,结果表明 ,该晶体属于六方晶系 ,空间群 R-3 ,a=b=3 5.993 (8) ,c=1 3 .84 2 (3 ) ,α=β=90°,γ=1 2 0°,Dcalc=1 .2 60 m g/cm3 ,Z=1 8,R=0 .0 82 1 ,并且该化合物以 pinched cone构象存在。     

配合物Na_2(4-apyH)_2[CoCl_2(H_2O)_4·(tp)_2]的合成及晶体结构

为了研究过渡金属借助氢键引导的自组装,合成了线性刚性配体对二苯甲酸与钴(II)、4-氨基吡啶和水的配合物Na2(4-apyH)2[CoCl2(H2O)4·(tp)2](tpH2=p-phthalicacid,4-apy=4-aminopyridine).并采用X射线衍射法对配合物进行了晶体结构的测定.结果是结构简式C26H30CoN4O12Na2Cl2,相对分子质量Mr=766 35,三斜晶系,空间群为P1,晶胞参数a=7 875(2) A(1 A=10-10m),b=9 818(2) A,c=10 892(2) A,α=77.26(3)°,β=77 31(3)°,γ=84 22(3)°,V=800 1(3) A3,Z=1,Dc=1 590g·cm-3,μ=0 798mm-1,F(000)=393.结果表明:晶体分子中含三维氢键网状结构,每单元中心都以CoCl2O4六配位方式形成八面体构型.     

一个新型的通过氢键和π…π相互作用形成的三维 Ni(Ⅱ)聚合物[Ni(μ-isophthalate)(CH_3OH) _4]_n(英文)

合成了一个新型的镍 ( )配合物 [Ni(m-path) (CH3OH) 4]n(m-path)为间苯二酸 ) ,并通过 X-射线衍射测得其晶体结构 .晶体属单斜晶系 ,空间群为 C2 /c,晶胞参数 a=1 .693 1 (8) nm,b=1 .2 965 (6) nm,c=0 .73 40(3 ) nm,α=90°,β=1 0 9.3 83 (7)°,γ=76.763 (5 )°,V=1 .5 1 99(1 1 ) nm3,Z=4.相邻的一维之字链通过氢键和 π…π相互作用形成三维的网状结构     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with