THE NATURE OF THE CHEMICAL SHIFTSOF ACETYLENIC PROTONSAND CARBONS

Chinese Journal of Magnetic Resonance ›› 1998, Vol. 15 ›› Issue (6): 533-538.

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THE NATURE OF THE CHEMICAL SHIFTSOF ACETYLENIC PROTONSAND CARBONS

Li Linsheng

Institute of Applied Chemistry, Nothwest Institute of Light Industry, Xianyang 712081

Received:1998-05-11 Revised:1998-07-13 Published:1998-12-05 Online:2018-01-17

Abstract

Abstract: The patterns of ¹H and ¹³C chemical shifts in acetylenic compounds (Including acylic、alicylic、conjugative、aromatic and heterocyclic compounds) were system atically discussed.The π-electron circulation model is not reliable.The deformation and variation of density of electron clouds around nuclei is a reasonable model.

Key words: Chemical shifts, ¹H NMR, ¹³C NMR, Acetylenic bond, Acetylenic compound, Cycloalkyne, Marcrocycloalkyne, Benzyne, Cyano-group, Acyliumion. deformation of electron clouds around nuclei, Circulation model

Li Linsheng. THE NATURE OF THE CHEMICAL SHIFTSOF ACETYLENIC PROTONSAND CARBONS[J]. Chinese Journal of Magnetic Resonance, 1998, 15(6): 533-538.

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THE NATURE OF THE CHEMICAL SHIFTSOF ACETYLENIC PROTONSAND CARBONS

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