离子键

This is a new development after the discovery of the protonolysis of the C-Pd bond in the presence of halide ions and β-heteroatom elimination in presence of nitrogen-containing ligands in our group.

这是我们小组继发现卤离子效应下质子解淬灭C-Pd键，以及含氮配体下β-杂原子消除再生两价钯的研究后，又一新的进展。

The calculations reveal the different natures of the C-Cl and Si-Cl bonds and show that the barriers for the heterolysis processes in both cases are controlled by the resonance energy.

计算结果表明这两种分子在水溶液中的异解解离能取决于体系的共价-离子共振能RE_(C-I，在键解离过程中其共振能的丧失是反应解离能的主要来源。

S_ demonstrates that the modification of CTMAB to two layers of Lou soil is the coexist of both ionic exchange and hydrophobic bond m.

结果表明，土壤表面的CTMAB和Ca2+/2的总和可以作为一个简便有效的指标用来判断修饰机制的实质，它的研究证实了CTMAB对于塿土2层次土样的修饰是离子交换修饰和疏水键修饰共存的机制。

The ionization potential of an element is a measure of its ability to enter into chemical reactions requiring ion formation or donation of electron s and is related to the nature of the chemical bonding in the compounds formed by elements

为元素参与取得离子形式或移出电子的化学反应能力的量度，也与元素形成化合物中的化学键的性质有关。

The ionization potential of an element is a measure of its ability to enter into chemical reactions requiring ion formation or donation of electrons and is related to the nature of the chemical bonding in the compounds formed by elements

为元素参与取得离子形式或移出电子的化学反应能力的量度，也与元素形成化合物中的化学键的性质有关。

And adsorption of jack bean proteins onto the amphoteric resin was studied in this paper. The amphoteric resin was in innersalt form. The results of adsorption experiments show that when the proteins are adsorpted into the amphoteric resin in the neutral phosphate buffer solution, the diffusion coefficient of protein is near twofold in 0.4 mol/L NaCl phosphate buffer solution than that in solution without salt, and the adsorption capacity of protein also rises at the same ti...

通过盐浓度对吸附的动力学和热力学影响的研究，结果表明，在中性磷酸盐缓冲液中，两性树脂吸附刀豆蛋白，有盐( 0 。4mol/L Na Cl)的比无盐的扩散系数提高将近一半，且吸附量增加，其吸附等温线的效率在最初始部分高于无 Na Cl时的；随着盐浓度( 0～ 1 mol/L Na Cl)的提高，树脂对蛋白的吸附量也变大，盐浓度提高时树脂膨胀体积的增大与蛋白吸附量的增加呈线性关系，内盐型两性树脂对大分子蛋白质的吸附作用与小分子高价离子的相似，同样是通过内盐键破裂吸附。

We have been interested in design and synthesis of macrocyclic lanthanide complexes which are capable of catalytically hydrolyzing phosphodiester bonds. Because of their high thermodynamics stability, low kinetics lability, high coordination numbers, and charge density, macrocyclic lanthanide complexes will be suitable as artificial nucleases.

合成设计能促进磷酸酯键水解的金属错合物，一直是我们实验室很感兴趣的研究领域，尤其是以镧系金属离子大环配位子错合物这方面的研究，因其具有高度的热力学稳定、动力学稳定、高配位数及电子密度等特性，使得镧系金属大环错合物非常适合作为人造水解酶。

In the present work, SDS-PAGE and light scattering method were used to evidence the 〓 and 〓 induced intramembrane aggregation of proteins. The aggregation was found mainly due to the binding of lanthanides to membrane proteins via noncovalent bonding.

本文用SDS-PAGE和光散射方法证明了由〓和〓可引起膜蛋白的聚集，这种聚集主要是由稀土离子以非共价键的与膜蛋白直接结合引起，也有少量以形成二硫键为特征的氧化性交联。

Quantitative analysis on the EXAFS spectra showed that Zn was adsorbed onto the solid surface in form of octahedral hydrated Zn ions, which were linked to the octahedral Mn06 of manganite by sharing oxygen atoms, with an average bond length R(subscript Zn-O)=(2.01±0.01)×10^(-10) m.

EXAFS结果表明，Zn主要是通过共用水合Zn离子的O原子及水锰矿表面上的O原子形成Zn-0键，从而结合到水锰矿固体表面上，其平均Zn-O原子间距为(2.01±0.01)×10^(-10)m。

A surface-modified adsorbent is a support bearing at the surface of a chemically bonded "monomolecular" layer of adsorbing groups, which provides fast kinetics of the recovery and elution of the molecules and ions under study.5–9 SPE by use of alkyl-bonded silica gels has been widely applied in the environmental analysis of polyaromatic hydrocarbons, pesticides, substances of biochemical origin and other organic compounds.

表面改性吸附剂是一种载体，它负载在一层化学键合的单分子吸附性官能团的表层，为所研究的分子和离子的回收和洗脱提供了快速动力。使用含烷基的硅胶的SPE技术已经被广泛应用到芳烃聚合物、农药、生物成因物质以及其他有机化合物的环境分析中。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐