漫談鎘之核磁共振圖譜術

An Introduction of Cadmium NMR Spectroscopy

甘魯生(Lou-Sing Kan) ； 盧弘捷(Hung-Chieh Lu)

《科儀新知》 151期 (2006/04) Pp. 76-82

https://doi.org/10.29662/IT.200604.0009

摘要

鎘是有機、無機及生物化學研究和應用上一種重要元素。由於鎘有二同位素具核自旋，也是適於發展核磁共振的元素。本文就鎘的化學差移、Cd-H偶繞常數、自旋－晶格弛豫以及實驗方法做一回顧，並推薦Cd(ClO4)2在無限稀釋的化學差移數為鎘之化學差移標準。除了無機鎘鹽(CdCl2, Cd(ClO4)2)外，再以二種鎘化合物，一為有機金屬，一為金屬硫蛋白(metallo thionein)，藉此說明鎘在核磁共振的應用。

並列摘要

The element of cadmium plays an important role in organic chemistry, inorganic chemistry, and biochemistry. The receptivity of cadmium in NMR is more superior than calcium and zinc. Thus, cadmium is also an important element for NMR other than hydrogen and carbon. In this paper, several characters of Cd NMR such as chemical shifts, Cd-H coupling constants, spin-lattice relaxation, and experimental methods were discussed via the studies of CdCl2, Cd(ClO4)2, Cd2(bis (2-pyridyl)formamidine)3, and metallo thionein. The chemical shift of Cd(ClO4)2 at the infinite dilution is recommended as the standard of Cd NMR universally.