查询词典 anion

An amide-based fluorescent acyclic receptor (II -1) consisting of anthryl group was synthesized, and the anion binding property was studied in CHCI3 by fluorescence, UV-vis and H NMR spectra.

合成了带有蒽荧光团的非环状酰胺受体分子Ⅱ-1，通过荧光、UV-vis光谱等研究了受体在CHCl_3中识别阴离子的性质。

The calculations indicate that Co should be inside of Ge〓, and bicapped tetragonal antiprism structure with D〓 symmetry is found to be the most stable structure of the cluster anion CoGe〓, which has the higher bonding energy and embedding energy.

激光双重烧蚀反应表明Co原子不在Ge〓团簇的外表面，量子化学计算表明，Co原子应在Ge〓团簇的内部，具有D〓对称性的双戴帽反四棱柱构型是幻数团簇离子CoGe〓势能面上的最低点，且具有较低的结合能和内包覆能。

Go into discovers , air is hit by a positive ion to be mineral ion , nitrogen ion etc. much, the anion is oxygen ion and aquation OH group ion etc.

研究发现，空气中正离子多为矿物离子、氮离子等，负离子多为氧离子和水合羟基离子等。

A method for the simultaneous determination of arsanilic,nitarsone and roxarsone in animal feed was developed by anion solid-phase extraction and high performance liquid chromatography.

采用强阴离子固相萃取柱净化样品，建立了固相萃取/高效液相色谱法同时测定饲料中的阿散酸、硝苯砷酸和洛克沙砷的分析方法。

Based on Karl-Fisher titration, the ratio of water molecules to aurocyanide anion is four.

Karl-Fisher滴定表明每萃入一个Au〓阴离子，同时伴随四个水分子进入有机相。

The purpose of this project is to develop some new azonium moleculars and to investigate the anion recognition, enantioselective recognition and supramolecular catalysis of azoniums.

本项目按申请研究内容在设计合成新型氮鎓分子，研究它们对客体的识别作用及超分子催化作用等方面取得一系列创新结果。

Keywords: azonium; imidazolium; selective synthesis; anion recognition; benzoin condensation

中文关键词：氮鎓；咪唑鎓；选择性合成；阴离子识别；苯偶姻缩合

The experimental results from cyclic voltammetry and constant-potential electrolysis show that the mechanism of the reaction was two molecules and three steps electrochemical process with eight-electrons transferred: anion radical arose in the first step; two-electrons were transferred in the second step and accompanied with coupling reaction of radicals and protonation and dehydrate, the main product was azoxybenzene; two-electrons were transferred in the third step, and azobenzene was achieved.

研究结果表明，硝基苯在铂电极上的电还原反应为双分子八电子三步骤电化学过程：第一步反应为准可逆单电子转移步骤，产生阴离子自由基；第二步为二电子转移步骤，并伴有随后的双分子不可逆自由基偶合反应和快速质子化及脱水反应，主要产物为氧化偶氮苯；第三步是二电子转移产生偶氮苯的过程。

Autoclaved lightweight concrete waste ; silicate anion ; structure ; nuclear magnetic resonance ; belite

压蒸轻质硅酸盐板材废渣；硅酸盐阴离子；结构；核磁共振；硅酸二钙

Inaddition, an unexpected synthesis of an α,β,γ,δ-unsaturated ketone due to an abnormalopening of benzylidene acetal by bromide anion was achieved.

另外，在合成BC环的过程中，由于一步反常的溴负离子开苄叉反应，我们还意外地合成了一个α，β，γ，δ-不饱和酮化合物。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷