化合物

The ESR parameters of 4g strongly indicate that Cu〓 in complex 4g has a trigonal-bipyramidal environment, that is to say, Cu〓 is coordinated to four tertiaty nitrogen atoms and one chloride anion.

为了探测模型化合物中Cu〓的配位情况和几何构型，采用相同的方法合成和表征了杂双核化合物4g，ESR研究结合质谱信息表明在杂双核化合物4g中，Cu〓是五配位的，即它与一个Cl〓和四个叔铵氮原子配位而处于三角双锥场中。

This paper categorizes the different kinds of sulfone antifungal research, emphasizing a review of some of the bioactivity research that has been conducted and discussing the effect on bioactivity of different substituent groups. Sulfone development trends and prospects for future application of sulfone compounds is also discussed.

本文从杀菌剂方面对砜类化合物的生物活性研究进行了分类综述，重点介绍了该类化合物的一些生物活性研究方面的工作，简述了不同取代基对砜类化合物生物活性的影响，并对它的发展趋势和应用前景作了展望。

Four different SPE cartridges were tested for extracting six triazines, including atrazine, simazine, prometryn, desethylatrazine, 2-hydroxyatrazine and desisopropylatrazine, and finally ENVI-18 was selected as optimal. The method for solid phase extraction was further systematically studied for details.

考察了4种不同固相萃取柱对三嗪类化合物的吸附效果，最终选择ENVI-18固相萃取柱用于萃取地表水中的三嗪类化合物；系统研究了环境水样中三嗪类化合物的最佳固相萃取条件，选择洗脱溶剂为甲醇，洗脱溶剂用量5 mL，水样在萃取前不需要添加甲醇，不调节pH值。

The basic concepts of chiral source , chiral pool, chiral intermediates of pesticides, and the rotes for preparation of chiral molecular compounds from chiral pools were introduced.

介绍手性源、手性池和手性分子化合物的基本概念；由手性池化合物制备手性衍生物；比较了手性化合物生物加工与化学加工过程的优、缺点，寻求高效、经济和最合理的综合工艺流程。

The formation mechanism of the cerium compounds on the zinc powder subst rate was preliminarily discussed , and the effect s of the cerium compounds on the cycle and discharge properties of the zinc elect rodes were also investigated.

L Ce (NO 3) 3溶液中成功制得含有铈化合物的锌基复合粉，探讨了铈化合物在锌粉基体上的形成机制，并研究了锌基复合粉中铈化合物对锌电极的循环放电性能的影响。

We synthesized a series of porphyrins with varying side-chain lengths and terminating groups, and tried to understand the relationship between the environments and the properties of compound per se through some case studies.

而卟啉类化合物无论是在光合系统的模拟中，还是光疗化合物中都已成为经典化合物。

Up to date, transition metal phosphites have been extensively studied, the compoundsof V, Fe, Co, Mn, Zn and Cr with their various properties havebeen reported.

迄今为止，过渡金属亚磷酸盐化合物得到了较为深入的研究，一系列 V， Fe， Co， Mn， Zn和 Cr的亚磷酸盐化合物被合成出来，并且一些关于这类化合物的性质也有了相关的报导。

This model not only provides a new method to calculate~(31)P chemical shifts of phosphines,but also establishes the rela...

所建模型不仅在一定程度上阐明了膦类化合物31P NMR谱化学位移与其分子结构信息之间的关系，同时也提供了一种从理论上计算膦类化合物31P NMR谱化学位移的新方法，并对深入了解膦类化合物结构与性能的关系及解析、预测其31P NMR谱提供了一定的理论依据。

Topics covered include phosphines, applications of phosphorus and compounds as reagents in synthesis, the chemistry of phosphorus ylides, applications of the Wittig reaction in the synthesis of heterocyclic and carbocyclic compounds, preparation of Iminophosphoranes and their synthetic applications in the aza-Wittig reaction, phospho-transfer processes leading to bond formation, low valent phosphorus compounds and phosphorus methods in oligonucleotide chemistry.

包括的题目包括phosphines，磷的应用和作为在综合过程中的试剂的化合物，磷ylides的化学，在heterocyclic 和carbocyclic 化合物的综合过程中的威蒂格反应的应用， Iminophosphoranes的准备和在aza-威蒂格反应里的他们的合成申请，phospho 转换过程导致在oligonucleotide 化学方面的契约形成，低的化合价磷化合物和磷方法。

Topics covered include phosphines, applications of phosphorus and compounds as reagents in synthesis, the chemistry of phosphorus ylides, applications of the Wittig reaction in the synthesis of heterocyclic and carbocyclic compounds, preparation of Iminophosphoranes and their synthetic applications in the aza-Wittig reaction, phospho-transfer processes leading to bond formation, low valent phosphorus compounds and phosphorus methods in oligonucleotide chemistry.

包括的题目包括phosphines，磷的应用 Application 和作为在综合过程中的试剂的化合物，磷ylides的化学，在heterocyclic 和carbocyclic 化合物的综合过程中的威蒂格回应的应用 Application ， Iminophosphoranes的准备和在aza-威蒂格回应里的他们的合成申请，phospho 转换过程导致在oligonucleotide 化学方面的契约形成，低的化合价磷化合物和磷方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。