1) halogenated alkane
卤烷
3) halogenated methane
卤代甲烷
1.
A study of thermodynamic properties of halogenated methane by the method of chemical bond parameter function
用键参数函数法研究卤代甲烷的热力学性质
2.
Molecular structural parameters including inductive effect index(∑I),equilibrium electronegativity of atom(XE),total electron of atom nuclear external(∑e),total bond length of substituents to center atom(∑d) and electronegativity margin for all substituents(ΔX) were used model the 13C chemical shift of 45 halogenated methane.
利用描述电子效应的诱导效应指数(∑I)、原子的平衡电负性(XE)和反映核外电子云变形程度的总电子数(∑e)、各取代基到中心原子的化学键键长总和(∑d)以及各取代基电负性的和差值(ΔX)等参数对45个卤代甲烷化合物中的碳原子结构进行表征,并与其13CNMR谱化学位移建立了优良的定量结构-波谱关系模型:δC=-7403。
3.
A correlation was investigated between the boiling points and molecular structure of halogenated methanes, and a new method was developed to calculate and predict the boiling points of halogenated methanes.
探讨了卤代甲烷的沸点与其分子结构之间的关系 ,发展了一种既能计算卤代甲烷沸点、又能预测未知卤代甲烷沸点的方法 。
4) trihalomethanes
三卤甲烷
1.
Trihalomethanes in drinking water reduction through air stripping
空气吹脱法去除饮用水中的三卤甲烷
2.
The laboratory-scale and pilot-scale experiments were conducted to investigate the efficiency of controlling trihalomethanes(THMs) yields by combined preoxidation,which was carried out by potassium permanganate composite(PPC) and chlorine using a typical contaminated resource water in northern China.
通过小试和中试实验研究了高锰酸盐复合药剂(PPC)与氯联合预氧化工艺对三卤甲烷(THM s)的控制效果。
3.
Variations of assimilable organic carbon(AOC),trihalomethanes(THMs) and haloacetic acids(HAAs) in two different water distribution systems(DSs) were investigated in Shanghai,a eastern city of China.
研究了上海市2条不同水源水厂配水管网中可同化有机碳(AOC)、三卤甲烷(THMs)和卤乙酸(HAAs)的变化情况,并对饮用水生物稳定性和消毒副产物间的相关性进行了分析。
5) THMs
三卤甲烷
1.
Research on THMs formation kinetics in water network;
给水管网中三卤甲烷数学模型研究
2.
Determination and Evaluation of THMs in Water Supply in Kelamayi City
克拉玛依市自来水中三卤甲烷的测定与评价
3.
Some organic matter that have aromatic structure similar as humic acid are selected to conduct chlorination test,determined the formation of HAAs & THMs of tested matters,researched the relationship of the chemical structure of DBPFP with DBPs formation characteristics.
选择与腐殖酸有相似芳香结构的有机物进行氯化试验,测定其卤乙酸及三卤甲烷生成量,研究前体物化学结构与氯化消毒副产物生成特性的关系。
6) halomethane
[,hæləu'meθein]
卤代甲烷
1.
Effect of Electronegativity and Polarizability on the C 1s Core Ionization Energies of Halomethanes;
原子电负性和极化度对卤代甲烷C 1s电子电离能的影响
2.
The electrostatic effect constants for the substituents in an aromatic system were used firstly to study the bond dissociation enthalpy (BDE) of a halomethane system Y-CHnX3-n (n=0,1,2 and 3; Y=H,F,Cl,Br and I; X=F,Cl,Br and I).
将芳环上取代基的电子效应参数引入卤代甲烷,以卤代甲烷分子Y-CHnX3-n(n=0～3;Y=H,F,Cl,Br,I;X=F,Cl,Br,I)中Y—C键的标准键焓EYs-C与中心C原子相键连原子的场/诱导效应之和ΣFi、共轭效应之和ΣRi以及诱导偶极之和Σ(α×F)为参数,建立了一个定量估算卤代甲烷分子中Y—C键离解能(BDE)的通用模型,BDE(Y—C)=57。
3.
It is observed that the removal efficiencies and the sonolysis rate constants of three halomethanes after 1h ultrasonic irradiation fitted the following increasing order:CHCl3< CHBrCl2<CCl4,and the degradation of halomethanes studied followed the pseudo-first-order kinetics model,respectively.
以饮用水中痕量氯仿、四氯化碳和一溴二氯甲烷3种卤代甲烷为目标化合物,采用超声辐照技术研究它们在不同条件下的去除效果。
补充资料：卤烷基化反应
分子式：
CAS号：
性质：苯或取代苯、醛、卤代烃在路易斯酸的催化下生成α-烷基卤化苄或取代的α-烷基卤化苄的反应。最常用的路易斯酸催化剂是无水卤化锌。卤烷基化反应是芳烃亲电取代反应，当苯环上有间位取代基时，反应很难发生。酚和芳香胺不能进行卤烷基化反应，在此反应条件下容易生成高聚物。
CAS号：
性质：苯或取代苯、醛、卤代烃在路易斯酸的催化下生成α-烷基卤化苄或取代的α-烷基卤化苄的反应。最常用的路易斯酸催化剂是无水卤化锌。卤烷基化反应是芳烃亲电取代反应，当苯环上有间位取代基时，反应很难发生。酚和芳香胺不能进行卤烷基化反应，在此反应条件下容易生成高聚物。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条