离子键

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

表面改性吸附剂是一种在表面有一层化学键合单一分子层的吸附基团，吸附基团提供分子和离子的恢复和洗脱快速动力学。

The other Cu were six coordinated H2O to form the octahedral geometry coordinated cation.

阴阳离子之间除了通过静电力相互作用外，还存在氢键作用。

Therefore, partial least square regression was conducted to distinguish these possible factors and to evaluate their relative importance.

上层土壤中，铝主要来源于有机键合铝，土壤水离子强度是造成铝浓度差异的主导因素。

Some interactions have been found between ions of sodium perchlorate and water molecules.

无机盐高氯酸钠的加入破坏了水分子的氢键结构，阴阳离子分别与水发生相互作用。

The picrate anions are uncoordinated, and bound together by electrostatic attraction and hydrogen bonds.

苦味酸根离子没有形成配合物，它们是通过静电和氢键作用力排列在一起的。

The integrated analytical results show that the novel ligand coexists in ketoform and enolform structures under the measuring conditions, the ketoform structure may change into the enolform structure during the coordination and bonds with the central ion by two O atoms of the enolized hydroxyl group of pyrazolone ring and H2O and the N atom of the imine group and the N atom containing H of benzimidazole ring by losing the proton. And the coordination number of these complexes is four.

综合各种分析结果显示：配体在测试条件下以酮式和烯醇式结构共存，配位时酮式可能转化为烯醇式结构，按去质子的方式以吡唑啉酮环羟基和H2O上的两个O原子以及亚胺基上的N原子和苯并咪唑环上的含氢N原子与中心离子成键，配合物的配位数为4。

It is well reported that human telomeric DNA sequence [AGGG3] can form a well-defined quadruplex structure with the hydrogen bond between guanine bases in the appearance of K+ and Na+. It was reported that the formation and stability of the structure is meaningful for both gene regulation and apoptosis.

据文献报道，人类染色体端粒中的重复序列[AGGG3]可以在钠、钾离子存在的条件下通过四个G碱基间形成平面环状氢键从而折叠成四链结构G-quadruplex，此结构的形成与稳定对基因调控以及细胞的凋亡有着重要意义。

The IR spectra indicated that the functional group—COO〓 in PASP linked to the surface of carbon steel. The pitting corrosion inhibition of tungstate and BTA on carbon steel and the passivation of carbon steel in solutions containing sodium borate were studied by the measurement of polarization curves and the curves of current vs.

失重法研究钨酸钠与聚天冬氨酸对碳钢的协同缓蚀效应发现，钨酸钠与PASP对自来水中的碳钢有协同缓蚀作用，加入锌离子可产生进一步的协同作用，碳钢表面分析表明：聚天冬氨酸是以羧基在碳钢表面成键。

We reviewed the application of ionic liquids in organic synthesis in recent years, including both stoichiometric and catalytic versions.

第二部分对可能在离子液体，和中进行的碳-碳键形成反应进行了系统的研究。

The Mg-O bonds, the Raman frequencies and the number of the v〓-SO〓 band of the ion pair chain〓(n=1-4) increase with the growing of the chain, and it is well consistent with the experiments. It explains that the phenomena of gel appearance in the supersaturate solution of MgSO〓 and the blue shift of Raman spectra, as well as the phenomena of FWHH getting wider.

在〓（n=1-4）离子对链中电荷交替分布，Mg-O键长随链增长而增长，拉曼光谱频率随链增长而增高，最大强度振动波段的数目随链增长而增大，这些计算结果解释了MgSO〓过饱和溶液中出现的凝胶现象和其拉曼光谱的波段蓝移和半峰宽变宽的变化。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。