Proton magnetic resonance studies of heterocyclic aromatic amine adducts of nickel(II) and cobalt(II) acetylacetonate

機構典藏 > College of Sciences > Graduate Institute & Department of Chemistry > Journal Article > Item 987654321/61696

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/61696

Title:	Proton magnetic resonance studies of heterocyclic aromatic amine adducts of nickel(II) and cobalt(II) acetylacetonate
Authors:	王文竹;Wang, Wen-jwu;Wei, Ho-hsiang;魏和祥
Contributors:	淡江大學化學學系
Date:	1978-12-01
Issue Date:	2013-07-29 13:44:21 (UTC+8)
Publisher:	臺北市：中國化學學會
Abstract:	The proton nmr isotropic shifts of pyridine type ligands coordinated to paramagnetic nickel(II) and cobalt(II) acetylacetonate are reported, and the mechanisms of unpaired electron spin delocalization in these complexes are discussed. It is found that a σ-delocalization mechanism is in dominant, but the π-contribution can not be rule out. The calculations of the geometric factor for Co(II) complexes are done. It is used in the ratio method to separate the contribution of pseudo-contact shift from isotropic shift for Co(II) complexes. The effect of pseudoaromatic chelate ring on contact shift is not so large as previous reported.
Relation:	中國化學會會誌=Journal of the Chinese Chemical Society 25(4)，頁185-194
DOI:	10.1002/jccs.197800031
Appears in Collections:	[Graduate Institute & Department of Chemistry] Journal Article

Files in This Item:

File	Size	Format
index.html	0Kb	HTML	270	View/Open