1)group electronegativity基团电负性
1.In this paper we build up a method for calculating the bond dissociation energies of alkylsiliane derivatives and for calculating the heats of formation of alkylsiliane radicals from their group electronegativity.基于基团电负性用硅烷基的结构参数建立了硅烷基衍生物H3-xRxSi—X键的键离解能以及硅烷基自由基生成热的经验计算方法,利用此方法计算出了一系列H3-xRxSi—X键的键离解能,与已知的28个文献数据比较,平均偏差为4。
2.By employing these parameters, group electronegativity, the charge distribution of some groups containing phosphorus element and the total energies of the groups were calculated.以密度泛函理论和电负性均衡原理为基础,应用修正的电负性均衡方法,并自编程序,用最小二乘法,拟合确定了氢、碳、氧、氟、氯以及磷等各种类型原子的价态电负性、价态硬度和能量的相关参数;从电负性均衡原理的观点,利用这些参数确定了一些含磷元素的基团电负性、电荷分布和总能量,并进行了讨论。
3.A simple method has been built up for calculating the bond dissociation energies of organic compounds containing nitrogen or sulfur by use of group electronegativity.建立了用基团电负性计算含氮含硫有机物的键裂能的简单方法。
英文短句/例句
1.Study on Group Electronegat iv ity I Chemical Shift and Group Electronegativity基团电负性研究Ⅰ——化学位移与基团电负性
2.QUANTIFYING THE SUBSTITUENT EFFECT WITH PENETRATING-SHIELDING CONSTANT(Ⅳ)──the relation of electron binding energy and group electronegativity屏蔽-钻穿常数与取代基效应的定量研究──Ⅳ基团电负性与电子结合能的关系
3.Analysis of Voltage Stability based on Dynamic Load Models基于动态负荷模型的电压稳定性研究
4.Simulink Based Study of the Load Characteristics of Electric Locomotive基于SIMULINK的电力机车负荷特性研究
5.Research of Power System Voltage Stability Based on Load Models基于负荷模型分析的电力系统电压稳定性研究
6.Study of Electrochemical Performance of Silicon-based Negative Electrode Materials for Lithium-ion Batteries锂离子电池硅基负极材料的电化学性能研究
7.The Generation of Oxygen-containing Groups on the Surface of MWNTs and the Hydrogenation Activity of Naphthalene on the Supported Pd-Pt/MWNTs Catalysts;多壁碳纳米管表面含氧基团的生成及负载Pd-Pt的萘加氢活性
8.Additivity of Group Contribution of Electron Correlation Energies in Linear Alkyl Fluorides线性氟代烷烃电子相关能的基团加和性(英文)
9.Research on Short-Term Load Forecasting Model and Method Based on Chaotic Characteristic of Electric Load Time Series;基于电力负荷时间序列混沌特性的短期负荷预测方法研究
10.Studies of Load Model and Identification System of Load Characteristics Based on Virtual Instrumentation;电力负荷模型与基于虚拟仪器的负荷特性测辨系统的研究
11.Edge element computation of load performance of a claw-pole alternator基于棱单元法计算爪极发电机负载特性
12.The Analysis of Power System Stability and Load Modeling Based on PSASP;基于PSASP的电力系统稳定性分析及负荷建模
13.Study on Energy Feedback Type Electronic Load Based on Soft Switching Technology;基于软开关技术馈能性电子负载的研究
14.Preparation and Properties of Antimony-based Anode Materials for Li-ion Batteries;锂离子电池用锑基负极材料的制备及性能研究
15.Study on Optimization of Load Dispatching in Thermal Power Plant Based on Real-Time Unit Performance;基于机组实时性能的火电机组负荷优化调度
16.The Characteristic Analysis and Forecasting of Power Load Based on Fractal Theory;基于分形理论的电力负荷特性研究及预测
17.Short Electric Load Prediction of the Chaotic Character Using Support Vector Machines;基于混沌特性的支持向量机短期电力负荷预测
18.Preparation and Property Improvement of Tin-Based Anode Material for Li-Ion Battery;锂离子电池锡基负极材料的制备及性能改善
相关短句/例句
Bratsch group electronegativityBratsch基团电负性
3)anionic cluster负电团簇
1.By energy orderings and frequency analysis,a cyclic structure was found for the stable equilibrium conformation of neutral cluster while a linear structure was found for the stable equilibrium conformation of anionic cluster.通过经验势得到NH3(H2O)2团簇的十四种初始构型,在HF/6-31+G(d,p)水平上分别对中性团簇和负电团簇进行结构优化,对稳定结构在B3LYP/6-31+G(d,p)水平上继续优化,通过能量比较和频率计算,确定中性团簇稳定构型为环状结构,而负电团簇稳定构型为近似线形结构。
4)electronegative substituent电负性取代基
5)radical electronegativity游离基电负性
6)radical electronegative自由基电负性
延伸阅读
电负性取代基分子式：CAS号：性质：指电负性强的取代基，如—F，—Cl，—Br，—CN，—NO2等基团。
