具有不同类型桥基的双核Cu(Ⅱ)-Schiff碱配合物的合成和晶体结构

合成了３个分别以Ｃ２Ｏ２－４（［Ｃｕ２（Ｌ１）２（ｏｘ）］，１），ＡｃＯ－（［Ｃｕ２（ＡｃＯ）（Ｌ２）２］ＢＦ４，２）和酚氧（［Ｃｕ２（Ｌ３）２］（ＣｌＯ４）２，３）为桥基的双核铜配合物，并测定了１的复配合物［Ｃｕ２（Ｌ１）２（ｏｘ）］·［Ｆｅ（ＯＨ）２（Ｈ２Ｏ）４］ＣｌＯ４·Ｈ２Ｏ（１′）及２和３的晶体结构．Ｘ射线衍射结果表明：１′，２和３分别属于Ｆｄｄｄ，Ｐ２１／ｃ和Ｐ２１／ｃ空间群．晶胞参数：［Ｃｕ２（Ｌ１）２（ｏｘ）］［Ｆｅ（ＯＨ）２（Ｈ２Ｏ）４］ＣｌＯ４·Ｈ２Ｏ，ａ＝２．４３９０（４）ｎｍ，ｂ＝３．０５３８（６）ｎｍ，ｃ＝１．８４９４（６）ｎｍ，α＝β＝γ＝９０．００°；２，ａ＝０．８４７（１）ｎｍ，ｂ＝２．６５４２（８）ｎｍ，ｃ＝１．４１００（６）ｎｍ，β＝９１．３４（６）°；３，ａ＝０．７６４６（３）ｎｍ，ｂ＝１．６９８３（３）ｎｍ，ｃ＝２．４４１７（３）ｎｍ，β＝９７．１１°     

钴(Ⅲ)—邻菲绕啉混配型配合物的合成及结构研究

在不同条件下合成了［Ｃｏ（ｐｈｅｎ）ｍＸｐ］Ｙ１·ｎＨ２Ｏ型配合物，（ｍ＝１，２；ｐ＝１，２；１＝１－３；ｎ＝０－４；ｐｈｅｎ＝邻菲绕啉；Ｘ＝Ｃｌ－，Ｈ２Ｏ，酒石酸（ｔａｒｔ），甘氨酸（ｇｌｙ），α－皮可林酸（ｐｉｃ）．ＤＬ－两氨酸（ａｌａ），Ｌ－亮氨酸（ｌｅｕ），Ｌ－脯氨酸（ｐｒｏ）；Ｙ＝Ｃｌ－，］并进行了元素分析，热重分析，电子光谱，红外光谱和磁化率测定，计算它们的１０Ｄｑ和Ｂ值．Ｘ－ｒａｙ单晶衍射实验证明：［Ｃｏ（Ｐｈｅｎ）２（Ｈ２Ｏ）２］（ＮＯ３）３·２Ｈ２Ｏ，［Ｃｏ（Ｐｈｅｎ）２（ｇｌｙ）］Ｃｌ２·４Ｈ２Ｏ均为顺式结构．［Ｃｏ（Ｐｈｅｎ）（ａｌａ）２］Ｃｌ·３Ｈ２Ｏ，［Ｃｏ（Ｐｈｅｎ）（ｐｒｏ）２］ＣｌＯ４·４／３Ｈ２Ｏ均为ｔｒａｎｓ（Ｎ）结构．在［Ｃｏ（ｐｈｅｎ）２Ｘ２］（ｎ＋）型配合物中，Ｘ反位的键长均长于顺位键长，其反位效应的顺序为：Ｃｌ－＞羧基，ＮＨ２＞Ｈ２Ｏ。     

[C5H4C(CH3)2CH2CH=CH2]Sm(OH)Cl·2MgCl2·4THF的晶体结构分析

用Ｘ－射线晶体结构衍射法测定了［Ｃ５Ｈ４Ｃ（ＣＨ３）２ＣＨ２ＣＨ＝ＣＨ２］Ｓｍ（ＯＨ）Ｃｌ·２ＭｇＣｌ２·４ＴＨＦ的晶体结构。它属三斜晶系,空间群为Ｐ＾－１,ａ＝１０．７７３（２）,ｂ＝１２．８３６（３）,ｃ＝１５．４７８（３）Ａ,ａ＝１１１．４６（３）,β＝１０７．７１（３）,γ＝９２．５４（３）°,Ｖ＝１８６８（１）Ａ＾３,Ｍｒ＝８２７．９１,Ｄｘ＝１．４７２ｇ／ｃｍ＾３,μ＝２．０００６ｍｍ     

一经式异构体[Co(N-(3-Aminopropyl)-1,3-propanediamine)(1,2-diamino-2-methylpropane)Cl][ZnCl4]·2H2O的合成及晶体结构

用过氧化物法合成了新体系［ Ｃｏ（ ３, ３－ｔｒｉ）（ ｉｂｎ） ＣＩ］［ ＺｎＣｌ４］（ ３, ３－ｔｒｉ＝ Ｎ－（ ３－Ａｍｉｎｏｐｒｏｐｙｌ）－ １, ３－ｐｒｏｐａｎｅｄｉａ－ｍｉｎｅ; ｉｂｎ＝１, ２－ｄｉａｍｉｎｏ－２－ｍｅｔｈｙｌｐｒｏｐａｎｅ）中的一经式异构体［Ｃｏ（３, ３ｔｒｉ）（ｉｂｎ）ＣＩ］［ＺｎＣｌ４］·２Ｈ２Ｏ,解析了其晶体结构。晶体学参数：三斜晶系,空间群Ｐ１（＃２）,ａ＝９９．５８（２）ｎｍ,ｂ＝１１４．８３（２）ｎｍ,ｃ＝９８．８１（１）ｎｍ,ａ＝９６．７９（２）°,β＝９７．２４３（１０）°,ｙ＝９６．８９（１）°,Ｖ＝１．１０５５（３）Ｘ １０６ｎｍ３,Ｄｅ＝１．６７８ｇ·ｃｍ－３,Ｚ＝２,Ｆ０００＝５７２．００,μ（ Ｍｏ Ｋａ）＝ ２４． ５９ｃｍ－１, Ｒ＝ ０． ０２５, Ｒｗ＝ ０． ０３４。晶胞中含 ２个配位阳离子, ２个 ［ＺｎＣｌ４］２－阴离子及 ４个水分子。     

含固氮酶钼微环境结构单元O_3MoS_3的Mo－S，Mo－Fe－S化合物的研究

研究了含固氮酶钼微环境Ｏ_３ＭｏＳ_３结构单元四个系列化合物［Ｍｏ（Ｓ，Ｏ－Ｃ_６Ｈ_４－１，２］~－（Ｍ）［Ｍｏ_２（ＣＯ）_３（Ｓ，Ｏ－Ｃ_６Ｈ_４－１，２）_３］~（２－）（Ｄ），［Ｍｏ_３（ＣＯ）_７（Ｓ，Ｏ－Ｃ_６Ｈ_４－１，２）_３］~（２－）（Ｔ），和［Ｍｏ_２Ｆｅ（ＣＯ）_４（Ｓ，Ｏ－Ｃ_６Ｈ_４－１，２）_３Ｃｌ_２］~（２－）（Ｔ_ｆ）的合成化学与结构化学，并通过Ｘ－射线光电子能谱，红外光谱和电化学环伏安研究，深入探讨了它们的混合价，电子迁移和电化学行为，也讨论了有趣的Ｏ_３ＭｏＳ_３结构单元。     

稀土脯氨酸配合物[RE_2(L-Pro)_6(H_2O)_4](ClO_4)_6的标准生成焓测定

合成了两种稀土高氯酸盐与Ｌ－脯氨酸配合物的晶体．经热重、差热、化学分析及对比有关文献,知其组成 是［Ｐｒ２（Ｌ－Ｐｒｏ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６和［Ｅｒ２（Ｌ－ＰｒＯ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６,质量分数为９９．２４％和９８．２０％．选用ＲＥ（ＮＯ３）· ６Ｈ２Ｏ（ＲＥ＝Ｐｒ,Ｅｒ）、ＬＰｒｏ、ＮａＣｌＯ４·Ｈ２Ｏ和 ＮａＮＯ３作辅助物,使用具有恒温环境的反应热量计,以 ２ ｍｏｌ·Ｌ－１ＨＣｌ 作溶剂,分别测定了［２ＲＥ（ＮＯ３）３·６Ｈ２Ｏ＋６Ｌ－ＰｒＯ＋６ＮａＣｌＯ４·Ｈ２Ｏ］和｛ ［ＲＥ２（Ｌ－ＰｒＯ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６＋６ＮａＮＯ３｝在 ２９８．１５ Ｋ时的溶解热．设计一热化学循环求得化学反应的反应焓ｒＨ分别是：６３．９０４ ｋＪ·ｍｏｌ－１和 ９１．０１７ ｋＪ·ｍｏｌ－１,经计算得配合物［ＲＥ２（Ｌ－Ｐｒｏ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６（ｓ）在 ２９８．１５ Ｋ时的标准生成焓（２９８．１５ Ｋ）分别 是－６ ５９４．７８ ｋＪ·ｍｏｌ－１和－６ ５３２．８７ ｋＪ·ｍｏｌ－１。     

对苯二甲酸根桥联的双铜（Ⅱ）和双锰（Ⅱ）配合物的合成和…

合成和表征了４种新型配合物［Ｃｕ２（ＴＰＨＡ）（ＮＯ２－Ｐｈｅｎ）４］（ＣｌＯ４）２·Ｈ２Ｏ、［Ｃｕ２（ＴＰＨＡ）（Ｍｅ－ｂｐｙ）４］（ＣｌＯ４）２、［Ｍｎ２（ＴＰＨＡ）（ＮＯ２－Ｐｈｅｎ）４］（ＣｌＯ４）２·２Ｈ２Ｏ和［Ｍｎ２（ＴＰＨＡ）（Ｍｅ－ｂｐｙ）４］（ＣｌＯ４）２（ＴＰＨＡ：对苯二甲酸根阴离子；ＮＯ２－Ｐｈｅｎ：５－硝基－１，１０－菲绕啉；Ｍｅ－ｂｐｙ：４，４＇－二甲基－２，２＇－联吡…     

μ－4，4＇－联吡啶桥联三核Cu（Ⅱ）配合物的合成和磁性

合成了３种以４，４＇－联吡啶为桥联配体的三核环状Ｃｕ（Ⅱ）配合物［Ｃｕ＿３（４，４＇－ｂｐｙ）＿３·（ｐｈｅｎ）＿３］（ＣｌＯ＿４）＿６·２Ｈ＿２Ｏ（１）、［Ｃｕ＿３（４，４＇－ｂｐｙ）＿３］（ｂｐｙ）＿３］（ＣｌＯ＿４）＿６·Ｈ＿２Ｏ（２）和［Ｃｕ＿３（４，４＇－ｂｐｙ）＿３·（ＮＯ＿２－ｐｈｅｎ）＿３］（ＣｌＯ＿４）＿６·６Ｈ＿２Ｏ（３）。经元素分析、电导、ＩＲ、电子光谱、ＥＳＲ、磁化率等方法进行了表征，推定该配合物具有以４，４＇－联吡啶为扩展桥的结构。利用Ｈｅｉｓｅｎｂｅｒｇ模型求得交换参数Ｊ值为－０．２３ｃｍ－１（１）和－０．９０ｃｍ－１（３），表明配合物中金属离子间仅有很弱的反铁磁交换作用．     

Synthesis and Crystal Structure of Mixed Mo－W Cubane－type Cluster Compound ［Mo_2W_2S_4（μ－OAc）_2（dtp）_3（dtpH）］·CH_2Cl_2

Ｓｙｎｔｈｅｓｉｓ　ａｎｄ　Ｃｒｙｓｔａｌ　Ｓｔｒｕｃｔｕｒｅ　ｏｆ　Ｍｉｘｅｄ　Ｍｏ－Ｗ　Ｃｕｂａｎｅ－ｔｙｐｅ　Ｃｌｕｓｔｅｒ　Ｃｏｍｐｏｕｎｄ　［Ｍｏ_２Ｗ_２Ｓ_４（μ－ＯＡｃ）_２（ｄｔｐ）_３（ｄｔｐＨ）］·ＣＨ_２Ｃｌ_２ＣｈｅｎＱｉｕ－Ｈｕ?..     

THE SYNTHESIS AND CRYSTAL STRUCTURE COMPLEX OF SCHIFF BASE CONTAINING S·N－Cd_3｜CH_3O（O）C_6H_3CH＝NNHC（S）NH_2｜4·（CH_3COO_2·1／2［CH_3S（O）CH_3］·2H_2O

ＴＨＥＳＹＮＴＨＥＳＩＳＡＮＤＣＲＹＳＴＡＬＳＴＲＵＣＴＵＲＥＣＯＭＰＬＥＸＯＦＳＣＨＩＦＦＢＡＳＥＣＯＮＴＡＩＮＩＮＧＳ·Ｎ－Ｃｄ_３｜ＣＨ_３Ｏ（Ｏ）Ｃ_６Ｈ_３ＣＨ＝ＮＮＨＣ（Ｓ）ＮＨ_２｜４·（ＣＨ_３ＣＯＯ_２·１／２［ＣＨ_３Ｓ（Ｏ）ＣＨ_３］·?..     

Determination of curves characterizing the texture of microporous adsorbents

The possibility of determining the curves characterizing the texture of microporous absorbents on the ground of the Dubinin-Stoeckli (DS) equation has been discussed. The DS equation has been shown not to have any universal character. A more general equation of the adsorption isotherm including all cases of isotherms encountered in adsorption studies has been derived.     

超临界氢在活性炭上的吸附等温线研究

通过７７－２９８Ｋ范围内氢在ＡＸ－２１活性炭上的吸附数据，探讨如何用普通Ｉ－型等温线模型处理超临界条件下的吸附等温线，以获取关于超临界吸附系统的正确信息，结果表明，Ｌａｎｇｍｕｉｒ方程虽然可用来表达实验数据，但不能提供关于该吸附系统的任何可靠信息，Ｖｉｒｉａｌ方程虽不是整组数据的最好模型，但却能够可靠地确定Ｈｅｎｒｙ定律常数，然后可从ｖａｎｔＨｏｆｆ标绘决定等量吸附热，通过将实验数据拟合到Ｄｕｂｉ     

Adsorption integral equation via complex approximation with constraints: kernel of general form

For the monolayer adsorption on a homogeneous surface, including arbitrary range lateral interactions, the isotherm can be written as a power series of the Langmuir isotherm. If this isotherm is used as the kernel in the adsorption integral equation, this integral equation can be solved in an analytical form. Because the global isotherm is usually known as a set of experimental values, the use of a numerical method is inevitable. A new numerical method for solving the adsorption integral equation with a kernel of general form is developed. It is based on recent results concerning the structure of the local isotherm and on the ideas of complex approximation with constraints, and allows reduction of the problem under consideration to a linear‐quadratic programming problem. Results of numerical experiments are presented. The method can be useful for the evaluation of the adsorption energy distribution from experimental data. © 2001 John Wiley & Sons, Inc. J Comput Chem 22: 1058–1066, 2001     

一个与吸附剂浓度有关的Langmuir等温式

实验测定了不同吸附剂浓度下, 高岭土对Pb(II)和Cu(II)的吸附作用, 结果表明存在明显的吸附剂浓度效应, 即吸附等温线随吸附剂浓度升高而降低. 采用传统的Langmuir 吸附等温式对实验数据进行拟合表明, 此等温式可准确地描述给定吸附剂浓度下的吸附结果, 但不能预测其吸附剂浓度效应. 根据表面组分活度(SCA)模型, 假设吸附剂颗粒间存在相互作用, 吸附剂表面吸附位的活度系数不等于1, 而应为吸附剂浓度的函数, 推导出了一个与吸附剂浓度有关的Langmuir (Langmuir-SCA)方程. 运用高岭土吸附Pb(II)和Cu(II)以及文献中蛭石吸附Zn(II)和Cd(II)、咖啡吸附Pb(II)的实验数据检验方程的适用性, 结果表明Langmuir-SCA方程可准确地描述所观察到的吸附剂浓度效应. 方程的两个内禀参数, 热力学平衡常数(K_eq)和特征饱和吸附量(Γ_m⁰), 与吸附剂浓度无关, 并可由吸附实验数据拟合求得.     

Adsorption of vapors and gases by carbon sorbents with homogeneous microporous structures in the initial region of the adsorption isotherm

Examination of the adsorption isotherm equation derived from the theory of volume filling of micropores (TVFM) showed that the region of low pressures of experimental isotherms is not always described by this equation. A method for describing the initial region of adsorption isotherms using the parameters of TVFM was proposed.     

Evaluation of adsorption of nonionic surfactants blend at water/oil interfaces

The inherent biocompatibility of Span and Tween surfactants makes them an important class of nonionic emulsifiers that are employed extensively in emulsion and foam stabilization. The adsorption of Span-Tween blend at water/oil surface of emulsion has been investigated using a population balance model for the first time. Destability of emulsion was modeled by considering sedimentation, coalescence and interfacial coalescence terms in population balance equation (PBE). The terms of coalescence efficiency and interfacial coalescence time were considered as a function of surface coverage of droplets by surfactant molecules. The surface coverage at different surfactant concentrations was determined by minimization of difference between the model predictions and experimental average droplet sizes. After optimization, the surface coverage outputs were fitted with different adsorption isotherms to evaluate the adsorption behavior of Span-Tween surfactants blend at water/oil surface. The results show that Freundlich isotherm can predict the adsorption behavior of closer to the experimental observation. Moreover, fitted parameters imply the favorable adsorption of Span-Tween blend at water/oil interface.     

吸附树脂和活性炭对气体中苯的吸附研究

采用了动态吸附实验方法研究了吸附树脂NDA-201和椰壳型活性炭C1对苯蒸汽的吸附行为.对吸附平衡数据采用Dubinill-Astakov方程进行了拟合分析,并根据吸附剂孔结构特征探讨了吸附机理.实验结果表明,两种吸附剂的苯吸附等温线存在交叉现象,对高浓度苯蒸汽吸附治理可采用NDA-201树脂,低浓度则采用椰壳型活性炭C1;Dubinin-Astakov方程能用来对两种吸附剂的等温线进行拟合,表明吸附剂的微孔区域对吸附起着重要作用.微孔体积计算值的比较和特征曲线叠合的程度说明了.Polanyi吸附势理论更适合于描述椰壳型活性炭C1对苯的吸附,这可能是由于椰壳型活性炭C1的孔分布集中于微孔区,而NDA-201树脂除了微孔外还有一定量的中孔和大孔.     

氢气在炭狭缝微孔内吸附的预测

通过边界的平均场近似,推导二平板狭缝孔格子理论Ono-Kondo吸附等温方程.利用格子气模型特性和微观物理学理论,计算氢分子在石墨平面的最大吸附容量.比较由氢分子在石墨平面二典型聚集状态标定的Ono-Kondo方程,并用预测精度较高的方程计算了与文献相同条件下的吸附等温线.在比较了计算结果、试验结果和GCMC分子模拟结果后,对Ono-Kondo吸附等温方程的特点、理论基础作了分析,指出了方程的适用范围.     

Adsorption integral equation via complex approximation with constraints: The Langmuir kernel

The relationship between the measured adsorption isotherm and unknown energy distribution function is described by so‐called adsorption integral equation, a linear Fredholm integral equation of the first kind. We consider the case of the Langmuir kernel when the equation can be reduced to the Stieltjes integral equation. A new method for solving the Stieltjes equation is developed. The method is based on the ideas of complex approximation with constraints. The numerical algorithms constructed on the base of this method allow reduction of the problem under consideration to linear or linear‐quadratic programming problems. The method is compared with the usual regularization methods. The obtained results can be useful for the evaluation of the experimental adsorption energy distribution from experimental data. © 2000 John Wiley & Sons, Inc. J Comput Chem 21: 191–200, 2000     

A new way for calculating the adsorption capacity from surface excess isotherms

 Adsorption of n-butanol and water from butanol–water mixtures is studied on adsorbents of different hydrophobicity (activated carbon and hydrophobized montmorillonites). The shape of the adsorption isotherms of the hydrophobized clay minerals does not indicate preferential adsorption of butanol. Therefore, the adsorption capacity cannot be determined on the basis of the Langmuir isotherm. A new equation for determining the adsorption capacity is derived by combining the free enthalpy of adsorption with the adsorption excess amount. Both collections of data are obtained from the surface excess isotherm. The reliability of the adsorption capacity is checked by X-ray diffraction measurements. Received: 1 November 1997 Accepted: 19 February 1998