将“锂键”概念拓展到化学概论课程的氢键知识教学

doi:10.3866/PKU.DXHX202011056

Abstract

Abstract:

When lithium is close to the electronegative atom or group with lone pair electrons (which can also be extended to the less electronegative group), the electrostatic interaction is called lithium bond, which is similar to hydrogen bond. In this paper, the development and the latest progress of lithium bond are reviewed, and meanwhile the similarities and differences between lithium bond and hydrogen bond are discussed, so as to expand the knowledge of hydrogen bond in general chemistry teaching. We aim to deepen the students' understanding of hydrogen bonding concept as well as enhance students' awareness of scientific frontier, students' vision and innovative ability.

Key words: Hydrogen bond, Lithium bond, College chemistry, Reform of education

Hongying Zang, Yonghui Wang, Yangguang Li. Extending the "Lithium Bond" Concept to the Knowledge of Hydrogen Bond[J].University Chemistry, 2021, 36(6): 2011056.

Figures/Tables 3

References 15

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分子或复合物	键长/pm	偶极矩(D)
H-F	91.7	1.82
Li-F	152.8	6.295
Li-Cl	193.3	5.406
	r = 105.8	11.42
	r = 158.8	8.82
	r = 154.0	–

X	X···HF(H-F)	X···H-F	X···LiF(Li-F)	X···Li-F
H₂O	167.3 (95.7)	263	195.4(154.0)	349.4
NH₃	181.2 (95.7)	276.9	208.9(157.6)	366.5

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Extending the "Lithium Bond" Concept to the Knowledge of Hydrogen Bond

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