查询词典 selenides

Treatment of polystyrene-supported selenium ,bromide with lithium acetylides afforded polystyrene-supported selenoacetylene, which reacted with dicyclohexylborane giving a way for stereoselective synthesis of polymer-supported- vinylic selenides .

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与二环己基硼烷反应制得聚苯乙烯负载顺式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生偶联反应，提供了一种有效的-1，2-二取代乙烯的固相有机合成方法

In early stage, suflides and selenides instead of tellurides were in focus, and little metal-metal interaction exists in these layered chalcogenides.

从结构特征看，已有的层状三组元硫族化合物中没有或少有金属-金属相互作用。

Occasionally, we observed the four-component iodoamination of 1, 2-allenyl selenides with I〓 in MeCN at room temperature.

我们还发现1，2-联烯基硒醚在无水乙腈中可以与碘发生碘胺化反应生成酰胺，在此反应中溶剂乙腈参与了反应。

PbSe is an attractive selenides for wide applications in photoresistors, photodetectors and photoemitters in the infrared range.

硒化铅是一种非常有吸引力的硒化物，在光敏电阻、光电探测器和红外区光电发射器方面具有广泛的应用。

We found that the iodohydroxylation of 1-2-allenyl selenides with I〓 and water can smoothly proceed in aqueous MeCN at 0℃.

我们发现在乙腈水溶液中，1，2-联烯基硒醚可以和碘发生羟碘化作用，碘和羟基高度区域和立体选择性加成到1，2-联烯基硒醚的β，γ-位。

Reactive flux also provide a nearly disoxygen environment which is good for the synthesis of group-5-metal sulfides and selenides.

但是第5族元素极易与氧结合而难以得到硫硒化合物，尤其是多元化合物，而反应性融盐法提供了一个近似绝氧的环境。

The common ultrasonic clean machine was used to prepare nanocrystalline selenides at room temperature and nanocrystalline Ag〓Se, CuSe and PbSe were prepared by this method.

提出了采用普通的超声清洗机制备纳米硒化物的室温制备技术，分别制得了Ag〓Se、CuSe和PbSe等硒化物纳米晶。

Under the condition of 3 time mol equivalent magnesium,CuI 15mo1%, 45℃temperature and 10 hours reaction time, this preparation is notefficient to facilitate unsymmetry selenides.

我们选择溴苯与对溴甲苯在1倍镁量不同的催化剂的条件下反应，我们在光谱数据进行分析对比，可以看出只有溴基硒醚，并不能生成不对称有机硒醚。

Preparation of unsymmetrical selenides via the reaction of arylselenol with alkyl halides needs at least equal molar cesium hydroxide as the base.

通过卤代烃与硒酚反应合成了不对称硒醚，至少要使用等摩尔的氢氧化铯作碱，与氢氧化钾相比，氯化铯价格昂贵。

Alkyl balides react with sodium borohydride and selenium in the presence of solid sodium hydroxide to give dialkyl selenides in excellent yields.

在固体氢氧化钠存在下，卤代烃及用氢化钠与硒粉作用，在乙醇溶液中制得二烃基硒醚。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。