[Co(2,3-tri)(cmen)Cl][ZnCl4]配合物的合成及其两经式异构体的晶体结构

合成了[Co(2,3-tri)(cmen)Cl][ZnCl4](2,3-tri=N-(2-胺乙基)-1,3-丙二胺;cmen=1,2-二胺基丙烷)体系中的部分配合物异构体,解析了其中两异构体的晶体结构.其中晶体(Ⅰ)属单斜晶系,空间群P21/c,a=1.0211(2)nm,b=0.9208(2)nm,c=1.9511(4)nm,β=97.907(4)°,V=1.8161(7)nm3,Dc=1.803g@cm-3,Z=4,F(000)=1000.00,μ(MoKα)=29.66cm-1,R=0.0317,Rw=0.0923,晶胞中含4个配合物阳离子,4个[ZnCl4]2-阴离子;晶体(Ⅱ)属三斜晶系,空间群P1,a=0.90953(18)n,,b=0.9694(2)nm,c=1.1771(2)nm,α=110.669(4)°,β=92238(4)°,y=91.211(4)°,V=0.9697(3)nm3,Dc=1.750g@cm-3,Z=2,F(000)=52000,μ(MoKα)=27.84cm-1,R=0.0365,Rw=0.0975,晶胞中含2个配合物阳离子,2个[ZnCl4]2-阴离子及2个水分子.两异构体中Co3+为六配位,其差异仅表现在二元胺(cmen)中甲基的取向不同.在结构单元中对映体的比例为11.     

[Co(N-(3-Aminopropyl)-1,3-propanediamine)(2-(Aminomethyl)pyridine) Cl][ZnCl4]的一对差向异构体的合成及晶体结构

用过氧化物法合成了[Co(3,3-tri)(amp)Cl][ZnCl4]的两个经式异构体,晶体结构解析表明两者互为差向异构体。其中反式异构体(仲氢相对于C1)晶体属单斜晶系,空间群C2/c,a=2．7663(7)nm,b=0．9505(1)nm,c=1.8288(4)nm,β=105.57(2)°,V=4.632(1)nm3,Dc=1.706g·cm-3,Z=8,F     

[Co(2,3-tri)(een)Cl][ZnCl_4]配合物的合成及部分异构体的晶体结构测定

用过氧化物法合成、分离了Co23trieenClZnCl423tri=N2胺基乙基13丙二胺een=N乙基乙二胺体系中的部分异构体解析了其中两异构体的晶体结构。其中晶体属单斜晶系空间群P21/na=0.86114nmb=1.79069nmc=1.33747nmβ=107.6278°V=1.965316nm3Dc=1.713g·cm-3Z=4F000=1032μMoKα=27.43cm-1R=0.0725Rw=0.1798晶体同属单斜晶系空间群P21/ca=0.97993nmb=2.68159nmc=0.81073nmβ=107.5956°V=2.030511nm3Dc=1.658g·cm-3Z=4F000=1032μMoKα=26.62cm-1R=0.0660Rw=0.1536。两异构体中Co3 为六配位其差异仅表现在二元胺een中乙基的取向不同。晶胞中含4个配合物阳离子4个ZnCl42-阴离子。在结构单元中对映体的比例为1∶1。     

[Co(N-(3-Aminopropyl)-1,3-propanediamine)(2-(Aminomethyl)pyridine) Cl][ZnCl_4]的一对差向异构体的合成及晶体结构

用过氧化物法合成了 [Co(3,3-tri)(amp)Cl][ZnCl4]的两个经式异构体,晶体结构解析表明两者互为差向异构体。其中反式异构体 (仲氢相对于 Cl)晶体属单斜晶系,空间群 C2/c, a=2.7663(7)nm, b=0.9505(1)nm, c=1.8288(4)nm,β =105.57(2)°, V=4.632(1)nm3, Dc=1.706g· cm-3, Z=8, F000=2432.00,μ (MoKα )=23.51cm-1, R=0.033, Rw=0.041;顺式异构体 (仲氢相对于 Cl)晶体属三斜晶系,空间群, a=1.0790(2)nm, b=1.1749(1)nm, c=0.8920(1)nm,α =90.73(1)°,β =109.573(9)°,γ =80.60(1)°, V=1.0500(2)nm3, Dc=1.71g· cm-3, Z=2, F000=548.00,μ (MoKα )=25.73cm-1, R=0.022, Rw=0.030。两异构体中 Co3＋为六配位,其差异仅表现在 3,3-tri仲胺上氢的取向不同。     

[Co(2,3-tri)(amp)Cl][ZnCl4]体系中部分几何经式异构体的结构测定

利用单晶X-射线衍射分析了[Co(2,3-tri)(amp)Cl][ZnCl4](2,3-tri=N-(2-Aminoethvl)-1,3-propanediamine;amp=2-(Aminomethyl)pyridine)体系中的一异构体(m3-[Co(2,3-tri)(amp)Cl][ZnCl4]@2.5H2O)结构,用二维核磁共振DQCOSY和NOESY技术联合解析了另两个异构体(m2-[Co(2,3-tri)(amp)C1][ZnCl4]及m4-[Co(2,3-tri)(amp)Cl]][ZnCl4])在溶液中的结构.结构解析显示它们为该体系的三个几何经式异构体.解析的晶体结构属中心对称的空间群,表明它是外消旋的对映体.     

Co(N-(2-Aminoethyl)-1,3-propanediamine)(2-(Aminomethyl)pyridine)Cl][ZnCl4]配合物的合成及一种异构体的晶体结构

用过氧化物法合成了 [Co(2,3 tri)(amp)Cl]ZnCl4（ 2,3-tri =N-(2-Aminoethyl)-1,3-propanediamine; amp=2-(Aminomethyl)pyridine）中的四个异构体,解析了其中的一个几何异构体的晶体结构：顺式（ 2,3-tri中仲胺上的氢相对于 Cl）经式异构体 (m4)。晶体学参数：单斜晶系,空间群 P21/c, a=12.025(3)?, b=9.792(2)?, c=16.912(2)?,β =93.70(1)°, V=1987(2)? 3, Dc=1.761g· cm－ 3, Z=4, F000=1064.00,μ (MoKα )=27.17 cm－ 1, R=0.030, Rw=0.038。配合物离子中 Co3＋为六配位。晶胞中含 4个配合物离子,对映体的比例为 1∶ 1。     

[Co(2,3-tri)(cmen)Cl][ZnCl4]体系两异构体的晶体结构

用单晶 X-射线衍射分析方法解析了[Co（2,3-tri）（cmen）Cl][ZnCl4]（2,3-tri=N-（2-胺基乙基）-1,3-丙二胺,cmen=1,2-二胺基-丙烷,化学简式:CoCl（C9H25N5）ZnCl4,Mr=492.88）体系中的 2个异构体的晶体结构。其中异构体m2[ZnCl4]晶体属单斜晶系,空间群P21/c,a=10.7741（2）,b=15.3411（7）,c=11.7710（3）A,β=100.928（3）°,V=1909.8（4）A3,Dc=1.714g/cm3,Z=4,F（000）=1000,R=0.0488,wR=0.1301,晶胞中含4个配合物阳离子,4个[ZnCl4]2-阴离子;异构体m4＇[ZnCl4]晶体属三斜晶系,空间群P1,a=8.8472（5）,b=10.0484（7）,c=11.9139（9）A,α=90.456（3）,β=99.972（3）°,γ=112.836（3）°,V=957.8（3）A3,Dc=1.709g/cm3,Z=2,F（000）=520,R=0.0493,wR=0.1174,晶胞中含有2个配合物阳离子,2个[ZnCl4]2-阴离子。两异构体中Co3+为六配位。在结构单元中对映体的比例均为1:1。     

[Co(aipamp或apamp)(amp)Cl][ZnCl4]两体系中四个几何异构体的合成、结构解析以及量子化学计算

利用单晶X射线衍射解析了[Co(aipamp)(amp)Cl][ZnCl4] (aipamp=2-[(2-氨基异丙基)氨基甲基]呲啶,amp=2-(氨基甲基)吡啶)体系中两个异构体Ⅱ的结构和[Co(apamp)(amp)Cl][ZnCl4](apamp=2-[(2-氨基丙基)氨基甲基]呲啶)体系中一异构体Ⅲ的结构.晶体Ⅰ属单斜晶系,空间群P21/n, a=1.08028(10) nm, b=1.84843(18) nm, c=1.25582(12) nm, α=90.00°, β=97.150(2)°, γ=90.00°, V=2.4881(4) nm3, Dc=1.620 g·cm-3, Z=6, F(000)=582, R=0.0361, wR=0.0974,晶胞中含4个配合物阳离子,4个[ZnCl4]2-阴离子;晶体II属三斜晶系,空间群 P1, a=0.9957(2) nm, b=1.0207(3) nm, c=1.1478(3) nm, α= 102.584(5)°, β=91.559(5)°, γ=98.462(5)°, V=1.1240(5) nm3, Dc=1.699 g·cm-3, Z=2, F(000)=580.00, R=0.0449, wR=0.0984,晶胞中含2个配合物阳离子,2个[ZnCl4]2-阴离子.晶体III属三斜晶系,空间群P1, a=0.82423(7) nm, b=1.7199(8) nm, c=1.36399(1) nm, α=86.6350(10)°, β=81.7140(10)°, γ=67.6230(10)°, V=1.10278(15) nm3, Dc=1.734 g·cm-3, Z=2, F(000)=582.00, R=0.0332, wR=0.0823,晶胞中含4个配合物阳离子,4个[ZnCl4]2-阴离子.三异构体中Co3+为六配位,且配合物阳离子中具有C-H…π 结构.用一、二维核磁共振技术解析了第四个配合物在溶液中的结构,论证了该异构体属于[Co(apamp)(amp)Cl][ZnCl4]体系.4个异构体具有共同的结构特征--分子内C-H…π结构.     

[Co(2,3-tri)(cmen)Cl][ZnCl_4]配合物的合成及其两经式异构体的晶体结构

合成了Co23tricmenClZnCl423tri=N2胺乙基13丙二胺cmen=12二胺基丙烷体系中的部分配合物异构体解析了其中两异构体的晶体结构。其中晶体属单斜晶系空间群P21/ca=1.02112nmb=0.92082nmc=1.95004nmβ=97.9074°V=1.81617nm3Dc=1.803g·cm-3Z=4F000=1000.00μMoKα=29.66cm-1R=0.0317Rw=0.0923晶胞中含4个配合物阳离子4个ZnCl42-阴离子晶体属三斜晶系空间群a=0.9095318nmb=0.96942nmc=1.17712nmα=110.6694°β=92.2384°γ=91.2114°V=0.96973nm3Dc=1.750g·cm-3Z=2F000=520.00μMoKα=27.84cm-1R=0.0365Rw=0.0975晶胞中含2个配合物阳离子2个ZnCl42-阴离子及2个水分子。两异构体中Co3 为六配位其差异仅表现在二元胺cmen中甲基的取向不同。在结构单元中对映体的比例为1∶1。     

[Co(3,3-tri)(men)Cl][ZnCl_4]和[Co(3,3-tri)(cmen)Cl][ZnCl_4]两体系配合物的合成及两经式异构体的晶体结构

分别合成了 [Co(3, 3-tri)(men)Cl][ZnCl4]、[Co(3, 3-tri)(cmen)Cl][ZnCl4] (3, 3-tri = N-(3-胺基丙基)-1, 3-丙二胺,men = N-甲基乙二胺,cmen = 1, 2-二胺基-丙烷) 2体系的部分配合物异构体,用单晶 X-射线衍射分析方法解析了2异构体的晶体结构。其中 [Co(3, 3-tri)(men)Cl][ZnCl4] 体系的一异构体Ⅰ的化学简式为 CoCl(C9H27N5)ZnCl4,晶体属正交晶系,空间群 Pca21,a = 16.788(2),b = 7.964(1),c = 14.416(2) 牛琕 =1927.3(4) ?,Dc = 1.747 g/cm3,Z = 4,F(000) = 1032,Mr = 506.91,R = 0.0352,wR =0.0935;[Co(3, 3-tri)(cmen)Cl]2+ 体系的一异构体Ⅱ的化学简式为 CoCl(C9H27N5)ZnCl4稨2O, 晶体属三斜晶系,空间群 P ,a = 9.511(3), b = 9.972(3),c = 11.694(3) 牛琣 = 68.367(5),b = 85.196(6),?= 86.580(5),V = 1026.9(5)?3,Dc = 1.698 g/cm3,Z = 2,F(000) = 536,Mr = 524.92,R = 0.0494,wR = 0.1180。两异构体中 Co3+ 为六配位,晶胞中对映体比例均为1:1。在配合物异构体Ⅰ和Ⅱ中,三元胺以经式排布,三元胺配体(3, 3-tri)仲胺上的氢相对于Cl分别处于顺位(syn-)和反位(anti-);二元胺配体氮(或邻位碳)取代的胺基氮原子(N*)与三元胺配体中的仲氮原子分别处于对位(trans(N*))和邻位(cis(N*))。     

利用手持技术改进测定乙醇分子结构实验

利用压强传感器代替排水集气法,改进测定乙醇分子结构实验的仪器装置,并探索最佳反应条件。另外,设计两个空白实验,结合压强变化曲线对实验误差进行相关讨论。     

Neutral diterpenoids of oleoresins of five species of conifers of Transcarpathia

The compositions of the neutral diterpenoids of the oleoresins of five species of conifers growing in the Transcarpathia have been studied. It has been found that the oleoresins ofAbies alba M.,Larix decidua M., andPicea excelsa L. contain more than 50% of neutral diterpenoids. The group and qualitative compositions of the oxygen-containing diterpenoids have been determined. In the oleoresins ofAbies alba,Picea excelsa, andPicea abies tertiary alcohols — cis-abienol and isocembrol — predominate, while inLarix decidua the main component is the hydroxy ester larixyl acetate. Primary alcohols related to the resin acids have been found in all the oleoresins investigated. Features of the distribution of diterpenoids according to the species of conifers have been revealed. The results obtained are necessary for the chemotaxonomy of conifers of the family Pinceae.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodynkh Soedinenii, No. 6, pp. 812–816, November–December, 1988.     

光谱仪测试范围的扩展

由于石化行业的生产需要，其材质的使用具有多样性和广泛性，经常会出现顾客委托的测试样品的一个或几个元素跨越光谱仪现有测试程序测量范围的情况。本法通过对光谱仪测试原理的认识，根据光谱仪的测试能力及标样的采集，实现了一个或几个元素测量范围的扩展，并对其测量的影响因素进行了研究。     

Influence of viscosity of medium on processes of oxygen quenching of excited states of mesoporphyrin

The oxygen quenching rate constants for singlet and triplet excited states of the dimethyl ester of mesoporphyrin IX increase with decreasing viscosity of the medium and reach a maximum at a viscosity of approximately 0.4 mPa·sec, after which the rate constants begin to decrease. The drop in rate constant with increasing fluidity of the medium may be related to a nonequilibrium character of the elementary act in the interaction of the reactants in the solvent cage. In viscous media such as isopropyl alcohol, isobutyl alcohol, and isoamyl alcohol, the reaction radius is greater than the sum of the radii of the reacting particles. The long-range character of these processes is due to the relatively weak dependence of the quenching probability on distance.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 2, pp. 161–167, March–April, 1989.     

Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran

The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.     

物质分配系数的测定实验改进

实验教学目的是从解决实际问题出发,以实验技术训练和实验设计思想培养为目标。介绍了将单一的物质分配系数测定实验改进为综合实验,提高了实验效果及实验资源利用率。     

Determination of heats of detonation and influence of components of composite explosives on heats of detonation of high explosives

The heats of detonation of 20 simple high explosives and explosive mixtures were determined by means of an adiabatic detonation calorimeter designed by the authors. The results indicated that the performance of the instrument was reliable and the experimental data were very accurate. For explosive mixtures, there was a linear accumulative relationship between the heats of detonation of the explosive mixture and its components. Accordingly, the heats of detonation of explosive mixtures could be calculated directly from the heats of detonation of simple explosives and the characteristic heats of other components. The experiments showed that the gold or brass shell of the cylindrical charge could be substituted by a thick-walled porcelain shell, which had the advantage of cheapness.

     

Effect of the Method of Modification of Zeolite X on Selectivity of Catalytic Methylation of Toluene

Theoretical and Experimental Chemistry - The effect of the method of modification of catalysts based on zeolite X by cesium and magnesium cations (ion exchange and impregnation) on the selectivity...