吡啶－2，6－二甲酸钪配合物［Sc（HDPA）（DPA）（H_2O）_2］·5

在水溶液中合成了吡啶－２，６－二甲酸抗配合物的晶体，元素分析结果表明，可用Ｓｃ（ＨＤＰＡ）（ＤＰＡ）·７Ｈ＿２Ｏ表示，用Ｘ射线衍射方法测定了配合物的单晶结构，其结构式为［Ｓｃ（ＨＤＰＡ）（ＤＰＡ）（Ｈ２Ｏ）２］·５Ｈ２Ｏ。晶体属正交晶系，空间群为Ｐｎ２１ａ。晶胞参数如下：ａ＝１．０１６９（２）ｎｍ，ｂ＝１．０１７２（２）ｎｍ，ｃ＝２．０２５４（４）ｎｍ；Ｖ＝２．０９５（１）ｎｍ３，Ｚ＝４，Ｄ＝１．５９ｇ／ｃｍ３。抗离子的配位数为８，其配位多面体为三角十二面体。     

三乙四胺六乙酸镥配合物的合成与结构

在水溶液中合成了｛［Ｌｕ２（ｔｔｈａ）（Ｈ２Ｏ）６Ｌｕ２（ｔｔｈａ）（Ｈ２Ｏ）４］·２１Ｈ２Ｏ｝ｎ , 通过Ｘ 射线衍射确定其晶体结构。该配合物为一无限链状结构, 三斜晶系, 空间群Ｐ１ , 单胞参数ａ ＝ １－０９７８７（７） ｎｍ , ｂ＝１－２７６０３（１０） ｎｍ , ｃ ＝ １－４５９０３（１０） ｎｍ , α３ ＝ ７５－７６９（６）°, β＝ ８５－２８８（５） , γ＝７１－５７７（６）°, Ｖ＝ １－８７９７（２） ｎｍ３ ． Ｚ＝ １ , Ｄｃ ＝ １－９７５ ｇ／ｃｍ３ ． Ｆ（０００） ＝ １１０６ , μ＝ ５－３１２ ｎｍ － １ ,Ｒ１ ＝ ０－０２３９ ,ｗ Ｒ２ ＝ ０－０５２７ 。     

四氢糠基环戊二烯稀土氯化物的合成及表征

报道了四氢糖基环戊烯基稀土氯化物的合成，用元素分析，红外光谱，质谱和核磁共振谱表征这类化合物的组成为（Ｃ４Ｈ７ＣＯＨ２Ｃ５Ｈ４）２ＬｎＣ１（Ｌｎ＝Ｎｄ，Ｇｄ，Ｄｙ，Ｅｒ），测定了（Ｃ４Ｈ７ＯＣＨ２Ｃ５Ｈ４）２ＤｙＣｌ的晶体结构属正交晶系，Ｐ２，２１２１空间群，晶胞参数：α＝１．１８０９（３）ｎｍ，ｂ＝１．２１４９（４）ｎｍ，ｃ＝１．３３７７（５）ｎｍ，ｚ＝４，Ｄｃ＝１．７２ｇ／ｃｍ＾３，Ｒ＝０．０     

（n—C4H9）4N2（OC14H8O2）Mo4O10（OCH3）2的合成和晶体结构

为探讨钼多酸根阴离子在有机化学反应中的催化机理，用菲醌作底物合成了（ｎ－Ｃ４Ｈ９）４Ｎ）２（ＯＣ１４Ｈ８Ｏ）２Ｍｏ４Ｏ１０Ｏ１０（ＯＣＨ３）２）配合物，Ｘ射线单晶结构分析表明，该晶体属单斜晶系，空间群Ｐ２１／ｃ，ａ＝１．３１４９（５）ｎｍ，ｂ＝１．８６６６（８）ｎｍ，ｃ＝１．８９０３（３）ｎｍ，β＝１０４．０６（３）Ｚ＝２．收集到独立衍射点３５０５个，其中１３８２个为可观测点，最终一致性因子Ｒ＝０     

α,ω-双(4-(4′-甲基)-偶氮苯基)苯氧甲基-1,1,3,3-四甲基二硅氧烷的合成和结构

合成了（ＣＨ３（Ｃ６Ｈ４）Ｎ２（Ｃ６Ｈ４）ＯＣＨ２Ｓｉ（ＣＨ３）２２Ｏ,对其晶体结构及分子偶极矩进行了研究．结果表明,晶体属单斜晶系,Ｉ２Ａ空间群,晶胞参数如下：ａ＝２．１７８３４ｎｍ,ｂ＝０．８０３２５ｎｍ,ｃ＝２．０８８９５ｎｍ,β＝１１９．１９１°,Ｖ＝３１８２６ｎｍ３,Ｚ＝４,Ｄｃ＝１．２１６ｋｇ／ｍ３．分子偶极矩μ＝８．９３２×１０－３０Ｃ·ｍ．通过对分子结构和矩值的分析,说明了由刚性基团和柔性基团组成的端介晶基四甲基二硅氧烷的性能与结构之间的关系．     

吡啶—2,6—二甲酸镧钇异核酸合物的合成及晶体结构

合成了吡啶－２，６－二甲酸镧钇异核配合物晶体，元素分析结果表明，化学式为ＬａＹ（ＨＤＰＡ）２．（ＤＰＡ）２．１２Ｈ２Ｏ，ＤＰＡ为吡啶－２，６－二甲酸根。用Ｘ射线衍射法测定了配合物的单晶结构，其结构式为［ＬａＹ（ＨＤＰＡ）２（ＤＰＡ）２（Ｈ２Ｏ）４］．８Ｈ２Ｏ，属单斜晶系，Ｐ２１／ａ空间群，晶胞参数：ａ＝１．２９７５（４）ｎｍ，ｂ＝１．１２６６（３）ｎｍ，ｃ＝１．４０７６（３）ｎｍ；β＝１０２．１５     

钕钇异核谷氨酸配合物的合成及晶体结构

在水溶液中合成发钕钇异核谷氨酸配合物［（Ｎｄ４／３Ｙ２／３（Ｇｌｕ）２（Ｈ２Ｏ）８）４］（ＣｌＯ４）１６．１０Ｈ２Ｏ的单晶，并测定其结构。晶体属单斜晶系，Ｐ２１空间群，晶胞参数：ａ＝１．１０３７（５）ｎｍ，ｂ＝１．６７１０（５）ｎｍ，ｃ＝２．００８６（１０）ｎｍ，β＝１０２．８０（４）°，Ｖ＝３．６１２（３）ｎｍ＾３，Ｚ＝１，Ｄｃ＝２．０７９ｇ／ｃｍ＾３。最终偏差因子Ｒ＝０．０５８。钕和钇对中心位     

吡啶－2，6－二甲酸镧钇异核配合物的合成及晶体结构

合成了吡啶－２，６－二甲酸镧钇异核配合物晶体。元素分析结果表明，化学式为ＬａＹ（ＨＤＰＡ）＿２·（ＤＰＡ）＿２．１２Ｈ＿２Ｏ，ＤＰＡ为吡啶－２，６－二甲酸根。用Ｘ射线衍射法测定了配合物的单晶结构，其结构式为［ＬａＹ（ＨＤＰＡ）＿２（ＤＰＡ）＿２（Ｈ＿２Ｏ）＿４」·８Ｈ＿２Ｏ，属单斜晶系，Ｐ２＿１／ａ空间群。晶胞参数：ａ＝１．２９７５（４）ｎｍ，ｂ＝１．１２６６（３）ｎｍ，ｃ＝１．４０７９（３）ｎｍ；β＝１０２；１５（２）°，Ｖ＝２．０１１９０（１）ｎｍ￣３，Ｚ＝４，Ｄｃ＝１．８３ｇ／ｃｍ￣３，稀土离子的配位数为９，其配位多面体为扭曲的三冠三角棱柱体。     

Mn（Ⅲ）—苯甲酰丙酮缩乙二胺—有机碱配合物的合成及结构

合成了４种锰（Ⅲ）－苯甲酰丙酮缩乙二胺－有机碱配合物：Ｍｎ（ｂｚａｃｅｎ）ＬＣｌＯ４．（Ｌ为哌嗪，吡啶，γ－甲基吡啶和乙腈）。测定了配合物［Ｍｎ（ｂｚａｃｅｎ）（ＣＨ３ＣＮ）ＣｌＯ４］的结构，晶体属正交晶系。空间群Ｐｎｍａ。晶胞参数：ａ＝０．９０７７（１），ｂ＝１．５５６３（１）ｎｍ，ｃ＝１．７２０５（２）ｎｍ，Ｖ＝２．４３０５ｎｍ＾３，Ｚ＝４，Ｄｃ＝１．４８ｇ／ｃｍ＾３，Ｄｍ＝１．４９ｇ／ｃｍ＾     

RE[CH2（CH2）4CONC4H9]3（NO3）3（RE=La,Dy）的合成和晶体结构

采用Ｘ－射线四园衍射仪测定了Ｄｙ「Ｃｈ２（ＣＨ２）４ＣＯＮＣ４Ｈ９」３（ＮＯ３）３和Ｌａ「ＣＨ２（ＣＨ２）４ＣＯＮＣ４Ｈ３」３（ＮＯ３）３的晶体结构。两个配合物具有相似的结构，均属单斜晶系，空间群为Ｐ２１／ｃ。晶体参数：Ｄｙ「Ｌａ」：ａ＝１．８５６４（３）「１．８５６４（２）」ｎｍ，ｂ＝０．９７６９（２）「０．９８３４（１）」ｎｍ，ｃ＝２．１８６３（６）「２．２００３８（７）」ｎｍ，β＝９６．０８     

Furyl- and thienyl-silatranes and germatranes

We review our research on the synthesis and study of the physical and biological properties of furyl- and thienylgermatranes and -silatranes.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 725–732, June, 1992.     

Review and patents and literature

The use of the insect cell/baculovirus expression system for producing recombinant proteins of bacterial, plant, insect, and mammalian origin has become widespread. The popularity of this eukaryotic expression system is due to many factors, including (1) potentially high protein expression levels, (2) ease and speed of genetic engineering, (3) ability to accommodate large DNA inserts, (4) protein processing similar to higher eukaryotic cells (e.g., mammalian cells), and (5) ease of insect cell growth (e.g., suspension growth). The following review of the literature discusses two engineering aspects of recombinant protein synthesis by insect cell cultures: bioreactor scale-up and insect cell line selection. Following this review patent abstracts and additional literature pertaining to expression of recombinant proteins in insect cell culture are listed.     

Ground- and excited-state aromaticity and antiaromaticity in benzene and cyclobutadiene

The aromaticity and antiaromaticity of the ground state (S 0), lowest triplet state (T 1), and first singlet excited state (S 1) of benzene, and the ground states (S 0), lowest triplet states (T 1), and the first and second singlet excited states (S 1 and S 2) of square and rectangular cyclobutadiene are assessed using various magnetic criteria including nucleus-independent chemical shifts (NICS), proton shieldings, and magnetic susceptibilities calculated using complete-active-space self-consistent field (CASSCF) wave functions constructed from gauge-including atomic orbitals (GIAOs). These magnetic criteria strongly suggest that, in contrast to the well-known aromaticity of the S 0 state of benzene, the T 1 and S 1 states of this molecule are antiaromatic. In square cyclobutadiene, which is shown to be considerably more antiaromatic than rectangular cyclobutadiene, the magnetic properties of the T 1 and S 1 states allow these to be classified as aromatic. According to the computed magnetic criteria, the T 1 state of rectangular cyclobutadiene is still aromatic, but the S 1 state is antiaromatic, just as the S 2 state of square cyclobutadiene; the S 2 state of rectangular cyclobutadiene is nonaromatic. The results demonstrate that the well-known "triplet aromaticity" of cyclic conjugated hydrocarbons represents a particular case of a broader concept of excited-state aromaticity and antiaromaticity. It is shown that while electronic excitation may lead to increased nuclear shieldings in certain low-lying electronic states, in general its main effect can be expected to be nuclear deshielding, which can be substantial for heavier nuclei.     

多环芳二酐型聚酯亚胺膜的透气性能

多环芳二酐型聚酯亚胺膜的透气性能李悦生，丁孟贤，徐纪平（浙江大学高分子科学与工程研究所，杭州，３１００２７）（中国科学院长春应用化学研究所）关键词聚醚酰亚胺，聚酯酰亚胺，膜，透气性通常的聚酰亚胺加工性能较差，在芳环二酐的苯环间引入醚键等柔性基团后，其...     

Determination and study on residue and dissipation of benazolin-ethyl and quizalofop-p-ethyl in rape and soil

A QuEChERS (quick, easy, cheap, effective, rugged, and safe) method for the determination of benazolin-ethyl and quizalofop-p-ethyl in rape and soil by high-performance liquid chromatography-tandem mass spectrometry has been developed in this study. The residue and dissipation of benazolin-ethyl and quizalofop-p-ethyl in rape and soil were determined with the developed method. The half-lives of benazolin-ethyl in rape straw and soil were 3.7–5.1 days and 14.3–26.3 days, respectively. The half-lives of quizalofop-p-ethyl in rape straw and soil were 5.0-6.1 days and 0.3–9.7 days, respectively. The residue of benazolin-ethyl and quizalofop-p-ethyl in rapeseed and soil were below the detection limit (i.e., 0.5?mg?kg^?1, the maximum residue level of European Union for quizalofop-p-ethyl).