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All the compounds are characterized by IR and elemental analysis.we design and prepare a bipyridinium supramolecular compound and six coordination compounds, which are also characterized by IR, elemental analysis and X-ray structure analysis. According to X-ray structure analysis, hydrogen bonds and n-n stocking interactions participate in the architecture of three-dimensional framework [H2L1 (NO3)2 (H2O)2]n; one-dimensional zigzag coordination polymer [Hgl21.5CH3OH]n; binuclear metallamacrocycle (HgI2L2)2 3H2O; helical double-stranded one-dimensional coordination polymer [Co2(L2)2-2CH3OH]n; double-stranded one-dimensional coordination polymer [Co2(L3)2-CH3OH-CH3CN]n; and three-dimensional compound [Cu(C5H4NCOO)2(H2O)2]-H2O with hydrogen bonds, three-dimensional coordination polymer {[Cd(C5H6NCOO)2H2O]-DMF}n, which are indirectly obtained from the precursor ligand L3 through metal ion induced the hydrolysis of diamide and self-assembled with the hydrolyzate.

我们首次合成了一个双吡啶鎓超分子化合物和六个过渡金属配合物，并通过IR谱，元素分析和X-ray晶体衍射分析对它们进行了表征。X-ray晶体结构分析表明：超分子化合物[H_2L1·(NO_3)_2·(H_2O)_2]_n是由多种氢键和芳香环间的π-π堆积作用构建的三维无限结构；[HgI_2(L1)·1.5CH_3OH]_n是一维锯齿状配位聚合物；(HgI_2L2)_2·3H_2O是双核金属大环化合物；[Co_2(L2)_2·2CH_3OH]_n是具有一维双螺旋结构的配位聚合物；[Co_2(L3)_2·CH_3OH·CH_3CN]_n为一维双链结构的配位聚合物；以及由非直线形配体L3在金属离子Cu和Cd的诱导作用下发生水解，并且金属离子与水解产物——异烟酸根离子自组装，形成了三维氢键超分子化合物[Cu(C_5H_4NCOO)_2(H_2O)_2]·H_2O和三维配位聚合物{[Cd(C_5H_6NCOO)_2H_2O]·DMF}_n。

The fluorescence properties of complexes of europium with β-diketone and terbium with benzoic acid and its derivatives were analyzed and the synergic effect of the second ligand was illustrated from the energy matching of the minimum triplet state of ligands and the resonance energy level of rare earth ions.

提出了掺杂离子荧光增强效应的机理。 4。首次采用ab initio CIS方法，在劈裂价层基组3—21G水平上对各配体进行了量化计算，系统分析了前线分子轨道特征和激发态的能级，从配体最低激发三重态能级与稀土离子共振能级的能级匹配，分析了铕与β-二酮的配合物的荧光性能和铽与苯甲酸系列衍生物的配合物的荧光性能，解释了第二配体的协同效应。

As a complicated multidentate ligand, theβ-diketone ligands and their derivatives have played a significant role in the realm of modern coordination chemistry, crystal engineering, supramolecular chemistry and biomedicine.

β-二酮类衍生配体作为一种优良的含氧配体，一直以来都是现代配位化学、晶体工程和材料科学、超分子化学、生物医学等领域的研究热点之一。

In this dissertation, the more denoting β-diketone ligand is used to weaken the electrophilic property of Ti center to obtain a complex for use as a catalyst precursor to polymerize ethylene, vinyl pyridine and acrylonitrile.

如何通过化学或物理化学方法来调节活性中心与非极性烯烃、活性中心与极性单体这两者之间的性能差异，使之同时能适应两类单体聚合无疑是很重要的。

At first by reaction of TiCl〓 with β-diketone (acac: acetylacetone, facac: 1, 1, 1-trifluoroacetylacetone) ligand to yield two kinds of Ti (β-diketone)〓Cl〓, then they are complexed proportionally with Co 〓 or Ni 〓 through different method to get two-metal catalyst precursors.

另外采用具有不同性能两种或多种金属催化剂复合制得催化剂，使其具有多活性中心的综合性能，发挥各金属活性中心的协同作用，已经在聚烯烃的研究工作中深入开展。

That is specifically activated by an artificial ligand called a chemical inducer of dimerization.

它特异性被叫做化学性诱导二聚体的人工配体激活。

The computer simulation showed that the hydroxyl group at β site of adsorbent with dimethylamine ligand could form H bond with endotoxin, as a result an eight-membered ring was formed.

模拟结果显示，以二甲胺为配体的吸附剂，当β位存在羟基时，此羟基可与内毒素分子间形成氢键，并形成一个八元环的稳定结构。

The computer simulation showed that the hydroxyl group at β site of adsorbent with dimethylamine ligand could form H bond with endotoxin, as a result an eightmembered ring was formed.

模拟结果显示，以二甲胺为配体的吸附剂，当β位存在羟基时，此羟基可与内毒素分子间形成氢键，并形成一个八元环的稳定结构。

The effect of divalent cations like 〓 and 〓 on integrin ligand binding ability was investigated.

通过人工设计合成的一段多肽，我们对整合素蛋白与RGD配基的特异相互作用以及〓对该相互作用的影响进行了研究。

A series of double metal cyanide complex catalysts were prepared in two different methods by using β-cyclodextrin, PEG-1000 or Tween-60 as an additional complex ligand respectively, and the effects of different kinds of additives and preparation methods on the appearance, particle diameters, crystal constitution and activity of DMC catalysts were also studied.

分别以PEG-1000、β-环糊精和吐温-60等为助络合剂，采用不同工艺方法制备了具有不同结构的双金属氰化物络合物催化剂，研究了不同助络合剂和不同制备方法对DMC催化剂的形貌、粒径、晶型结构和催化活性的影响。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了