查询词典 acetylide

Fourthly, based onour experiments and the literatures', the necessities of endohedralmetallofullerenes' formation are the existence of well graphitized of carbonand metal acetylide.

四在实验和文献报导的基础上，提出原料中完好石墨化的碳和电石型金属碳化物的存在是形成Fullerene笼内金属包合物的必要条件。

It was found that copolymerization of selected acetylenes with different polarity by using palladium acetylide complex catalysts is an effective method for improving solubility of polymers, especially doped polymers, which makes the above mentioned polymers and doped ones a new type of π-conjugated sensing material for preparation of thin film humidity sensor.

研究发现，以新型过渡金属钯-炔配合物为催化剂，通过选择具有不同极性的取代乙炔单体进行共聚，可有效地提高聚合物的溶解性，尤其掺杂聚合物的溶解性，实现可溶酸掺杂，继而开发出上述系列新的π-共轭型聚炔湿敏材料，用以制备薄膜型湿敏元件。

Taking double-layer paracyclophane derivatives, platinum acetylide chromophores, porphyrin derivatives, C60, C70 and octupolar molecule as the example, our research results have been reported.

以双层二聚二甲苯邻甲酸衍生物、铂乙炔化物、卟啉衍生物、C60、C70、八极矩分子为例，报道了我们在这方面的研究结果。

An electron-rich acetylide ligand would render the metal center more electron-rich and hence raise the dπ orbital energy, leading to decrease energy of the MLCT excited state.

证明通过改变乙炔基配体取代基的电子效应，能够调节最低激发态MLCT态的能量。

Alkylation of Acetylide Anions.

乙炔基离子的烷基化。

Nucleophilic opening of the terminalepoxide 57 by a lithium acetylide from 27 in the presence of BF3·EtO furnishedcompound 58, which had the skeleton of target molecule, subsequent conversionsinvolved the introduction of γlactone gave Annonacin.

然后以三氟化硼参与的炔负离子开环氧反应建立分子骨架，得到化合物58。随后经氢化，引入α，β不饱和丁内酯环、去保护等几步反应，就得到Annonacin。

ABSTRACT Homopolymerization and copolymerization of substituted acetylenes with different polarity by the transition metal acetylide complex catalysts PPO, Pd (PPh〓〓〓; PPB, Pd〓 C≡CC (CH〓〓OH 〓etc.

首次以过渡金属钯-炔配合物为催化剂（PPO，Pd〓〓；PPB，Pd〓〓等），实现了具有不同极性取代乙炔单体的均聚和共聚。

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。