阅读下面的材料并思考价层电子对互斥理论(Valence Shell ElectronPair Repulsion Theory)适用于主族元素间形成的AB_n 型分子或离子。该理论认为,一个共价分子或离子中,中心原子A周围所配置的原子B(配位原子)的立体构型,主要决定于中心原子的价电子层中各电子对间的相互排斥作用。这些电子对在中心原子周围按尽可能互相...
1940年美国的 Sidgwick等人提出了价层电子对互斥理论(valence shell electron pair repulsiontheory),简称 VSEPR法。对于 AX。型分子或离子,其价层电子对指的是中心原子形成σ键的电子对和孤对电子对,其数目等于X原子数n与孤对电子对数之和。该理论认为,AX。型分子或离子的几何构型,主要决定于中心原子的价层电子...
valence-shell electron pair repulsion theory 英 [ˈvæləns ʃel ɪˈlektrɒn peə(r) rɪˈpʌlʃn ˈθɪəri] 美 [ˈveɪləns ʃel ɪˈlektrɑːn per...
Scherer W, Sirsch P, Shorokhov D, McGrady G S, Mason S A, Gardiner M G. Valence- Shell Charge Concentrations and Electron Delocalization in Alkyllithium Complexes: Negative Hyperconjugation andAgostic. Bonding Chem Eur J 2002; 8(10): 2324-2334....
To explain the title "Valence Shell Electron Pair Repulsion," let's do a some review. The valence shell is the outer shell of electrons that are involved in bonding. Valence comes from the same word as "Valiant" meaning courageous and strong. In chemistry, it is these outer electrons that...
Photoionization and photofragmentation studies of formic acid (HCOOH) are performed for the valence shell electron ionization process. The total and partia... MS Arruda,RRT Marinho,AM Maniero,... - 《Journal of Physical Chemistry A》 被引量: 5发表: 2012年 加载更多来源...
Recently, we reported an investigation on the electronic structure of the valence-shell of cyclopropane and presented the angular dependent ionization energy spectrum measured by (e, 2e) spectroscopy. In this work, direct measurements of electron momentum distributions corresponding to individual ionic sta...
1) The electron pairs in the valence shell around the central atom of a molecule repel each other and tend to orient in space so as to minimize the repulsions and maximize the distance between them.2) There are two types of valence shell electron pairs viz., i) Bond pairs and ii) ...
1) valence shell electron 价壳层电子1. A novel quantum topological index QTI is proposed based on adjacency matrix by introducing quantum numbers and topological chemical principle on the basis of valence shell electron structure character and interaction among electrons in this paper. 在基态原子价...
Valence-shell electron-pair repulsion (VSEPR) theory is conventionally used to predict molecular geometry. However, it is difficult to explore the full implications of this theory by simply drawing chemical structures. Here, we introduce... TE Saraswati,S Saputro,M Ramli,... - 《Journal of Phys...