THE NMR STUDIES ON DIAMAGNETIC IONS COORDINATED TO SOME AMINO ACIDS

Chinese Journal of Magnetic Resonance ›› 1994, Vol. 11 ›› Issue (1): 49-55.

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THE NMR STUDIES ON DIAMAGNETIC IONS COORDINATED TO SOME AMINO ACIDS

Hu Jiehan¹, Qu Ming¹, Han Xiuwen¹, Xu Yongting², Yang Kaihai²

1. Dalian Institude of Chemical Physics, The Chinese Academy Sciences, Dalian 116023;
2. Experimental Center, Liaoning Normal University, Dalian 116022

Received:1993-02-01 Revised:1993-06-14 Published:1994-03-05 Online:2018-01-20

Abstract

Abstract: The coordinations of diamagnetic ions, Zn²⁺ and Cd²⁺ with alanine in the present of Fe³⁺ ions,have been investigated by means of NMR T₁ method. The Fe³⁺ ions make T₁ values of Carbons of ligand obviously decreased. After addition of diamagnetic ions,T₁ values are increased due to the competition of coordination and the replaeements of Fe³⁺ ions by diamagnetic ions.The relative coordinating ability of those diamagnetic ions can be elucidated according to the variation of T₁ values.Here a new parameter △ is introduced to represent the coordinating ability of diamagnetic ions.

Key words: Diamagnetic ions, Amino acid, NMR

Hu Jiehan, Qu Ming, Han Xiuwen, Xu Yongting, Yang Kaihai. THE NMR STUDIES ON DIAMAGNETIC IONS COORDINATED TO SOME AMINO ACIDS[J]. Chinese Journal of Magnetic Resonance, 1994, 11(1): 49-55.

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THE NMR STUDIES ON DIAMAGNETIC IONS COORDINATED TO SOME AMINO ACIDS

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