配合基

Antioxidative activity of three naringin-metal complexes was characterized by applying methods of 1,1-diphenyl-2-picrylhydrazyl radical and thiobaribituric acid.

采用二苯代苦味肼基自由基法和硫代巴比妥酸法对3种柚皮苷-金属配合物的抗氧化活性进行了测定。

Have had the intense function fromthis the explanation preparation and DNA, matched the body the planearyl residue groups and bases to insert the DNA double spiral plane,caused the plane aryl residue groups and bases the electronic clouddensity to have the change.

由此说明配合物和DNA发生了强烈作用，配体的平面芳基基团插入了DNA的双螺旋平面，导致平面芳基基团的电子云密度发生改变。

Thirdly,in the view of some different results between the reaction of complexes(2)、(3)and[(Me_3Si)_2N]_3LnLi_3 with aromatic aldehydes, the reaction of 2 equiv of aromatic aldehydes with 1 equiv of lithium amide(1) catalyzed by the YCl_3 was subsequently studied,and better yields of the corresponding amides and alcohols can be isolated.These results indicated that the enolate ligand in complexes(2)、(3)may have impact on the Cannizzaro disproportionation reaction.

第三，鉴于上述配合物2、3和[(Me_3Si_2)2_N]_3LnLi_3与芳香醛反应结果上的一些差别，我们又以三氯化钇为催化剂，将两当量的芳香醛与一当量化合物1的锂盐直接进行反应，结果以较好的产率得到了相应的酰胺和醇，这说明配合物2、3中所含的乙烯醇基可能对此Cannizzaro-型歧化反应存在一定的影响。

The results show that during oxidation, a methoxyl group in the ligand ring broke, and the phenoxy- and water-bridged Cu complex formed.

实验结果表明：在Cu配合物氧化过程中，能使配体环上的一个甲氧基发生断裂，形成苯氧桥和水桥联的Cu配合物。

In this mechanism, a phosphine ligand in the Ru hydride complexes is replaced by protonic solvent ROH to generate the chain carrier.

三、反应机理论文提出，在固载Ru基催化剂上的scCO〓加H〓生成HCOOH的反应中，CO〓的活化在Ru配合物的作用下，以反插入Ru-H键，生成金属-羧酸配合物的形式进行。

Eight complexes of light rare earths with dioctyldithiocarbamate,〓 xH〓O (RE=La-Tb, except for Pm) and Nine complexes of rare earths with 5-phenyl pyrazoline dithioformate, Na RE〓·xH〓O (RE=La-Dy, Y, except for Ce and Pm) have been synthesized in air and dry N〓atmosphere, respectively.

分别在空气和氮气保护条件下，合成出八种稀土与二正辛基二硫代氨基甲酸形成的配合物〓（RE=La-Tb，除Pm外）和九种稀土与5-苯基吡唑啉二硫代甲酸的固态配合物NaRE〓（La—Dy、Y、除Ce、Pm外）。

The results from ultraviolet spectroscopy and photo -luminescence spectroscopy revealed that:(1) Europium complexes based on neutral ligands, such as azaphenanthroline 2-aryl-5-(α-pyridyl)-1,3,4-ozadiazole had a strong UV absorbance at the wavelength of 290-350 nm and the characteristic PL spectrum of europium ion at 613 nm respectively;(2) The structures of ligands had a critical role influence on PL intensity of europium complexes.

紫外光谱和光致发光光谱研究表明：(1)以氮杂邻菲罗啉、2-芳基-5--1，3，4-噁二唑为中性配体的铕配合物在290～350nm左右都有强烈的紫外吸收，且在紫外光的激发下都能产生铕离子的特征光谱(613nm)；(2)配体的结构是影响铕配合物发光强度的关键因素之一。

Fluouricil is usually used as anticancer drug, its derivative, 5-fluoro-uracil-1- acetic acid has good biological activity. Its complexes were presented in literatures. However, the coordination modes of it are paradox in literatures. The single crystal structure was resolved to clarify the confusion. The result indicates the carboxylic group coordinates to zinc ion in unidentate, and the heteroatoms of pyrimidine ring are not involved in coordination. Antitumor activity against SMMC-7721 was also examined.

7.5-氟尿嘧啶是临床上广泛使用的抗癌药物，它的衍生物5-氟尿嘧啶-1-乙酸亦具有良好的生物活性，有关它的金属配合物亦有报道，但其结构指认相当混乱，为此研究了它与锌的配合物单晶结构，证明了5-氟尿嘧啶以单齿羧基与锌配位，而嘧啶环氮并未配位，也研究了它对SMMC-7721细胞株的抗肿瘤作用。

Two novel Schiff-base ligands containing ferrocenyl and their transition metal complexes were synthesized and characterized by 1H NMR, IR, elemental analysis, thermal analysis and molar conductivity measurements.

合成了两个新型含有二茂铁基的Schiff碱配体及其8种过渡金属配合物，并通过1H NMR，IR，元素分析，热分析和摩尔电导对其结构进行表征，提出了配合物的可能结构。

In addition to cationic gold complexes bearing bulky biphenyl phosphines, a gold complex with tris(2,6-di-tert-butylphenyl)phosphite is exceptionally reactive as a catalyst for this reaction.

在与有大体积连苯基膦配体的金正配合离子加成反应中，三(2，6－二叔丁基苯)亚磷酸盐的金配合物异常活泼并充当该反应的催化剂

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