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Estimation of Selectivities and Relative Cationization Efficiencies of Different [Crown+M] + by Electrospray Mass Spectrometry
Author(s) -
Young DunShyurng,
Hung HuanYi,
Liu Lilian Kao
Publication year - 1997
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/(sici)1096-9888(199704)32:4<432::aid-jms497>3.0.co;2-a
Subject(s) - chemistry , selectivity , mass spectrometry , electrospray , electrospray ionization , electrospray mass spectrometry , methanol , ligand (biochemistry) , ion , metal , metal ions in aqueous solution , inorganic chemistry , organic chemistry , chromatography , catalysis , biochemistry , receptor
The selectivity of the lariat crown ethers toward metal ions can be estimated easily using electrospray mass spectrometry. Two lariat crown ethers in the sym ‐dibenzo‐16‐crown‐5 series were shown to be more selective towards Li + than Na + ions in methanol. Calibration for the relative cationization efficiencies of the metallated crowns [crown+M] + was shown to be essential for comparison of the selectivities in ligand–metal interactions. The two sym ‐dibenzo‐16‐crown‐5 ethers show the best selectivity towards Li + ion in methanol with their Li + complexes being the most stable among Li + , Na + and K + ions. © 1997 by John Wiley & Sons, Ltd.