化合物

In this thesis,with bioassay results in vitro and total contents of flavones as evaluate indexes, the optimal extract method and extract procedure of Bidens parviflora Willd.were firstly studied.

在黄酮类化合物中，又以黄酮醇和黄酮的活性最好，查尔酮、二氢黄酮、橙酮的活性次之，黄酮苷类化合物的活性较弱。

The spectral data suggest that intramolecular carbonyl oxygen to tin coordination in 1 is existent and is not allowedin order to accommodate two and three bidentate dithiocarbamate ligands in 3 and 4 respectively.

波谱数据表明化合物1和2存在着分子内羰基氧原子对锡原子的配位，而在化合物3和4中这一配位则被两个或三个双齿二硫代氨基甲酸配体所替代。

The alkyl groups have little effect on photophysical properties and oxidation potentials, but have biggish effect to thermal properties.

分子中烷基链的长短对化合物的光物理性质和电化学性质影响很小，但对化合物的热稳定性影响较大。

Complex 5 is a binuclear copper iodide, which is firstly determined by X-ray diffraction.

化合物5是一个双核铜碘无机-有机杂化化合物。我们首次对其单晶结构研究。

The mononuclear complex (5) and binuclear complex (2),(4),(7) also investigated via single crystal X-ray diffraction.

单核铜一价化合物(5)和双核铜一价化合物(2)、(4)及(7)已经由X-ray单晶绕射解出其分子结构。

Methyl Sartortuoate and Methyl isosartortuoate are two tetracyclic tetraterpenoids isolated from the sarcophyton tortuosum tixier-durivalt by Chinese scientists. Biogenetically, it could be regarded as a Diels-Alder combination of two cembrenoids, i.

扭曲肉芝甲酯和异扭曲肉芝甲酯是中国科学家从南中国海扭曲肉芝软珊瑚中分离到的一种四环四萜化合物，从生源角度考虑，可能由两个西松烷型二萜化合物经Diels-Alder反应组装而成。

In the complex, the tin atom is hepta-coordinated in a distorted pentagonal bipyramid including a bridging pyridyl N atom, by which the one-dimensional infinite chain is formed.

结果表明，该化合物中锡原子配位数为7，处在畸变五角双锥配位场中，化合物通过吡啶基氮原子的桥连作用形成了一维无限链状结构。

The results indicated that the Sn atom in bistin Schiff base complexes was five-coordinated in trigonal bipyramidal geometries thanks to the existence of intermolecular ligands of Sn←N.

Schiff碱具有良好的配位作用，它们与不同的有机锡化合物配位后可以形成形式多样、结构不同的配合物，而且Schiff碱具有多种生物活性，与有机锡化合物生成配合物后，配合物的生物活性可能更宽广。

The endocyclic Sn atoms exist in a distorted triginal bipyramidal geometry with the coordination number of 5. The exocyclic Sn atoms form 6 significant bonds and exist in a distorted octahedron geometry.

化合物12的X衍射单晶测定表明，化合物是以Sn2O2四元环为中心的中心对称二聚体结构、内环锡为5配位的畸变三角双锥结构、外环锡为6配位的畸变八面体结构。

In this thesis, we synthesize eight new compounds 5, 11, 12, 16, 5-Zn, 11-Zn, 12-Zn, 16-Zn, which can be absorbed on the surface of nanometer size semiconductors (TiO_2) with four ester groups on the bipyridyl ligands.

本文合成了八个新化合物5，11，12和16以及它们的金属锌的络合物5-Zn，11-Zn，12-Zn和16-Zn。这些化合物可以通过联吡啶配体的酯基吸附在纳米二氧化钛表面。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。