配位

The various possible interaction between ligands in coordination compounds both intramolecular or intermolecular were also discussed.

讨论了配位化合物中配体间的各种可能的弱相互作用。

The tetraoxazoline ligands only afforded the-configuration whether monometallic and/or bimetallic palladium complexes were formed upon the complexing process. Using the chelation-induced axially chiral palladium complex as a catalyst, excellent catalytic activities and enantioselectivities in the Wacker- type cyclization of allylphenols with up to 99% ee were gained.

当它与钯离子配位后只得到了轴构型为S的单金属或双金属配合物，并将该配体应用于钯催化的邻烯丙基苯酚的Wacker-type环化反应中，获得了很好催化活性和高达99% ee。

The results showed that coordination occurred between palladium and polymers and the catalyst was stable at room temperature to 200℃.

结果表明，高分子胺配体与钯之间形成配位作用，制备的催化剂在室温～200℃有较好的热稳定性。

The effects of racemate initial concentration, volume ratio of surfactant to organic solvent, pH value in internal or external phase, pH gradient from external to internal phase, ligand metallicion and system temperature on the performances of chiral separation were discussed.

摘 要：研究在含有Cu2+和N-n-十二烷基-L-脯氨酸手性配体的乳状液膜体系中手性萃取分离氧氟沙星对映体的效果，以及外消旋体的初始浓度、表面活性剂与有机溶剂的体积配比、内外水相pH值、从外水相到内水相pH值梯度变化以及配位金属离子与体系温度对液膜手性分离性能的影响。

The fact that the coordination number in the second subshell is smaller than that of α-Fe〓O〓 might be an indication that there is a small amount of FeO mixed with α-Fe〓O〓 in aerosol particles.

同时也发现，在第二配位亚层中的O离子配位数较氧化铁小，源于样品中含有FeO，且与Fe〓O〓物相有一定程度的混杂。

, 80g/l HPZ-Ti solution can be stored stably for more than one year at atmospheric temperature (the highest temp. is 35℃), the precipitation point pH of 0.05M HPZ-Ti solution exceeds 4. 6, the stability can meet the tannage need. The tanning power of HPZ-Ti tanning liquor is better than that of any other titaninum tanning liquors which have been researched.

与钛配位能力适中，在革内有较好的渗透性，HPZ—Ti配合物与胶原有较大的反应活性，HPZ与Ti以0.45mol HPZ/mol Ti比例混和，浓度为80g/l时，在室温下（最高温度35℃）可稳定存放一年以上，浑浊点pH值达4.60以上，其鞣性优于其它配体蒙囿的钛溶液和其它方法制备的钛鞣剂。

This paper is a generalization and summation of some new progress in marine chemistry in the recent decade. The principal contents consist of seven parts:1. Oceanological survey. The oceanological survey covered the China Seas, the Pacific Ocean and the Antarctic Ocean.2. Interaction of minor elements and suspended matter in seawater and the theory of in-terfacial stepwise ion/coordination partical exchange.3. Effect of organic matters on the liquid-solid interfacial exchange and the rule of left-righ...

本文对近十年来海洋化学的若干新进展作了总结，主要包括下述7方面：(1)海洋调查，包括中国近海、太平洋和南极等；(2)海水中微量元素-固体粒子的相互作用和界面分级离子/配位子交换理论；(3)有机物对液-固界面交换的影响和S-型曲线左右移动规律；(4)海水化学模型发展的三个新趋势；(5)海水中金属的络合容量和金属-天然有机配位体络合物的条件稳定常数；(6)海洋有机化学和海洋生物化学；(7)结论，对海洋化学发展的四个特点作了分析和讨论。

The central atom is bridged to each ofthe two external copper atoms through triple triazole ligands.

在5的配阳离子中，中心铜离子处在反对称中心与六个admtrz桥的六个氮原子形成拉长的八面体配位环境。

In the aluminum solution ,the trivalence aluminum ion combi...

另一方面，在这种铝盐溶液中，三价铝离子是以铝水配合物的形态存在，配位水发生水解生成羟基配离子，其通过羟基桥联结，放出水分子，并逐级由单体配合成双核、三核以致形成多核羟基配合物。

In the aluminum solution ,the trivalence aluminum ion combines with water to form the coordination compound and then the coordination waters hydrolyze into hydroxide ions. The hydroxide ions can join up each other by the hydroxide ion bridges so that the double cores, three cores and multiple cores coordination compounds are formed.

另一方面，在这种铝盐溶液中，三价铝离子是以铝水配合物的形态存在，配位水发生水解生成羟基配离子，其通过羟基桥联结，放出水分子，并逐级由单体配合成双核、三核以致形成多核羟基配合物。

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。