查询词典 compounds
- 与 compounds 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Two ferrocenyl and trimethylsilyl substituted cyanohydrin ethers have been prepared by the addition of trimethysilyl cyanide to two acetyl-substituted ferrocenes: 1-(1-cyano-1-trimethylsilyloxyethyl)-ferrocene (1) and 1, 1'-bis(l-cyano-1-trimethylsilyloxyethyl)ferrocene (2). The structures of these two compounds were characterized by elemental analysis, IR, 1H NMR and X-ray crystallography.
通过两种取代的乙酰基二茂铁与三甲基氰硅烷的加成反应,得到两种取代二茂铁基三甲基硅烷基氰醇醚的晶体:1-(1-氰基-1-三甲基硅烷氧基乙烷基)二茂铁(1),1,1-二(1-氰基-1-三甲基硅烷氧基乙烷基)二茂铁(2),用X射线单晶衍射、元素分析、红外光谱和核磁共振氢谱对分子结构进行了表征。
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Cyclodextrin is a cyclic compound of glucosan formed through cyclizatjon of starch and its relevant compounds under the working of starch enzyme in Baccillus macerans. It has great potentialities in food industry.
环糊精是利用一种细菌Bacillus macerans内的特殊淀粉酶,把淀粉和其有关化合物以环化结合而形成的环状聚葡萄糖化合物,在食品工业上有很大的应用潜力。
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The electrochemical behaviors of this kind of compounds in DMF have been discussed by using cyclic voltammetric method.
同时,利用循环伏安法研究了该类化合物在溶液中的电化学行为。
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We also find that CuBr2 could also promote this cyclization reaction to give compounds 56 and 57 in 36 and 26 % yields.
同时我们也发现在上述的条件中加入二溴化铜进行催化反应可以得到化合物56和57,并且其产率提高至36和26 %。
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The reaction conditions and the spectral properties of cyclized compounds were researched, and a possible mechanism for the cyclization reaction was put forward.
探讨了反应进行的条件和产物的波谱性质,提出了可能的环化反应机理。
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Discussion of the solvent effect on oxidative free radical cyclization reaction of hemiacetal compounds 96 and 97
最后,研究半缩醛化合物96、97进行自由基反应之溶剂效应。
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In the present study, Hartree-Fock and Density Functional Theory with different basis sets were employed to calculate the structural and thermodynamic parameters of 66 thiophenyl, phenyl sulfoxide and phenylsulfonyl cycloalkane carboxylates. With the statistic software SPSS11.5 for windows and GQSARF2.0, the QSAR models relating physicochemical properties of these compounds to their structural and thermodynamic parameters were successfully obtained, using multiple stepwise regression method. The physicochemical properties observed in this work include octanol/water partition coefficient, chromatographic capacity index, toxicity (EC50 and LC50), and solubility etc.
本文采用从头算方法中的Hartree-Fock 方法、密度泛函理论方法(Density functional theory,简称DFT)中的不同基组,计算了苯硫基、苯亚砜基和苯砜基含硫芳香羧酸酯三类共66 个化合物的结构参数和热力学参数,利用SPSS11.5 for windows 统计软件和GQSARF2.0 软件,采用多元逐步回归法拟合得到与溶质-溶剂相互作用有关的物理化学性质与结构参数和热力学参数之间的QSAR 方程,这些物理化学性质包括辛醇/水分配系数、色谱容量因子、毒性(EC50和LC50)、溶解度等。
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It provides the theoretical basis and the feasible process parameters for the industrialization of expoxy cyclohexane compounds.
为绿色催化合成环氧环己烷系化合物的工业化合成新工艺开发提供了理论依据和可行的工艺参数组合。
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Diacylhydrazine cyclopropane compounds were synthesized from cyclopropane carboxylic acids which have comparable characters in the structures.
以结构上有可比性的环丙烷羧酸为原料,合成了环丙烷双酰肼化合物,结构经红外和核磁验证。
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Cyclopropane compounds areimportant reaction intermediates of organic systhesis and cyclopropane subunits arefound in many natural or unnatural products.
环丙烷衍生物是有机合成中常用的一类重要的反应中间体,手性的环丙烷衍生物在不对称合成中很有价值。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力