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Citation: Wang Jiaguo, Jing Xiping. Influence Factors to the Stability of Covalent Bond[J]. Chemistry, ;2016, 79(9): 864-875. shu

Influence Factors to the Stability of Covalent Bond

Wang Jiaguo ¹ ,
Jing Xiping ²

1.
1. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035;
2.
2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871

Received Date: 13 January 2016
Available Online: 18 April 2016

Although covalent bond strengths in small molecules can be obtained by Gaussian calculations, or available in some databases and handbooks, analysis of the influencing factors on covalent bond is still very important in chemistry teaching. The bond strength has close relations to both the bonding atoms and the bonding surrounding, the former include atomic radii, bonding symmetry, bonding orbitals, relativistic effect, electronegativity, bonding multiplicity, feedback effect, lone pair effect, and so on; the latter include bonding tension effect, delocalization effect, secondary bond effect, induction effect, steric effect, and so on. By this analysis, we can guide students to realize the variation tendency of the covalent bond energies. The influence of the bonding atom and the bonding surrounding on the covalent bond strength are discussed, and the application of this analyzing approach in chemistry teaching are introduced.
- Covalent bond,
- Bonding atom,
- Bonding surrounding,
- Influence factor
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