配体

Six new ligands and 2 mononuclear,5 binuclear,8 tetranuclear complexes all of which are new havebeen synthesised and characterized by elementalanalysis,electric conductance and IR,UV-Vis spactr-oscopic methods.

本文主要研究多核配合物中的磁交换相互作用。共合成了6个新配体，2个单核。5个双核和8个四核配合物，并用元素分析，红外，紫外一可见。

Part 6 explores the reaction system containing O-phthalate, Mn〓 and α,α'-diimine, and yields six novel complexes 16～20 possessing binuclear and tetranuclear matello-crown aether as well as 1-D linear structures, indicating that O-phthalate is a potentially useful ligand to give manganese species in a discrete form.

研究了邻苯二甲酸/锰/双齿亚胺（2，2'-联吡啶和1，10-邻二氮杂菲）的反应体系，合成出6个新颖的双核、四金属冠醚和一维线性结构的化合物16至20，表明邻苯二甲酸是合成有限核数锰簇的有用配体。

All the ligands and complexes have been characterized with ~1H-NMR, MS and EA.X-Ray single crystal diffraction reveals that zirconium complex containing the tert-butyl substituted N_2O_2 ligand is an oxo- and hydroxyl-bridged dinuclear structure, which is possibly formed by partial hydrolysis of chlorides at one of the zirconium centers. A tetranuclear zirconium complex has been obtained and chacaterized, which is formed by complete hydrolysis of the chlorides at the zirconium centers.

通过研究配合物的单晶结构，我们发现叔丁基取代的不对称N_2O_2配体与ZrCl_4反应生成的锆配合物为氧桥和羟基桥连接的双核锆配合物，中间过程涉及单核锆配合物中氯原子部分水解，并得到氯原子部分水解的双核锆配合物和全部水(来源：8e6eAB67C论文网www.abclunwen.com)解的四核锆配合物的晶体结构，在晶体培养过程中发现双核锆配合物能够以手性自发拆分结晶析出。

By modifying the synthetic methods in literature,four multinuclear copper complexes,that is,dinuclear[Cu_2(H_2tea)_2(C_6H_5COO)_2]·2H_2O, trinuclear[Cu_3(H_2tea)_2(4-OC_6H_4COO)_2(H_2O)]·4H_2O(designated as Cu_2),tetranuclear O?

通过改进合成方法，从硝酸铜原料和三乙醇胺(标记为H_3tea)配体出发，合成了四种多核铜配合物，即双核铜配合物[Cu_2(H_2tea)_2(C_6H_5COO)_2]·2H_2O，三核铜配合物[Cu_3(H_2tea)_2(4-OC_6H_4COO)_2(H_2O)]·4H_2O(标记为Cu2)，四核铜配合物O？

The catalytic activity of the mono- and bi-nuclear complexes, and unsymetric complex 〓〓 MeNTB =tris ( N-methylbenzimidazol-2-ylmethyl amine and tetranuclear complex 〓L = N, N, N', N'-tetrakis (N-methylbenzimidazol-2-ylmethyl-1,4-diaminobutane for oxidation of hexane was examined. Thedi-iron complexes with one exchangeable monodentate ligand and unsym-metric(μ-carboxylato) diiron complex exhibit high catalytic ac-tivity, while mononuclear Fe complex are inactive.

这些单核、双核化合物、不对称化合物〓-三氨和四核化合物〓四-1，4-丁二胺催化氧化环己烷的催化活性被测试，结果表明含有可交换配体氧桥联双核Fe化合物和不对称双核Fe化合物表现很高的催化活性，而单核的Fe化合物是非催化活性的。

The chiralMn complexes, especially Jacobsenscatalyst, display high enantioselectivity for asymmetric epoxidation of conjugated cis-di-, tri-and some tetrasubstituted prochiral alkenes in the NaClO biphasic system, but the epoxidationreaction generally requires a long reaction time even in the presence of an axial ligand.

在NaClO两相体系中，手性Mn配合物，尤其是Jacobsen催化剂，对共轭顺式二取代、三取代和部分四取代烯烃的不对称环氧化具有高的对映选择性，然而即使存在轴向配体，环氧化反应也通常需要长的反应时间。

The chiralMn complexes, especially Jacobsen\'scatalyst, display high enantioselectivity for asymmetric epoxidation of conjugated cis-di-, tri-and some tetrasubstituted prochiral alkenes in the NaClO biphasic system, but the epoxidationreaction generally requires a long reaction time even in the presence of an axial ligand.

在NaClO两相体系中，手性Mn配合物，尤其是Jacobsen催化剂，对共轭顺式二取代、三取代和部分四取代烯烃的不对称环氧化具有高的对映选择性，然而即使存在轴向配体，环氧化反应也通常需要长的反应时间。

The ligand of HL3 differs from HL1 and HL2 in having an ethyl group not methyl group on the triazole ring and having a thienyl group on the substituted amino group, meanwhile there are two kinds of 3 molecules in the crystal structure.

在化合物3中配体与化合物1和化合物2的不同，同时其一个结构单元中还存在两个结构几乎相同的分子，这两个分子只在键长、键角上有轻微差别。

A new macrocyclic ligand was synthesized by the condensation of 1,3-propylenediamine and triamine.

用丙二胺和三-胺，在无水甲醇中进行环缩合反应，生成了一个杂原子大环配体。

All carboxylates from acetate ligands coordinated in tridentate mode and bridge two M centers in adjacent different sheets.

而通过乙酸根配体以三齿模式桥联相邻近的毯子状网络结构的两个金属离子而形成三维网状结构。

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。