ESTIMATION OF SELECTIVITIES AND RELATIVE CATIONIZATION EFFICIENCIES OF DIFFERENT [CROWN PLUS M](-SPECTROMETRY() BY ELECTROSPRAY MASS)

Authors
YOUNG DS HUNG HY LIU LK
Citation
Ds. Young et al., ESTIMATION OF SELECTIVITIES AND RELATIVE CATIONIZATION EFFICIENCIES OF DIFFERENT [CROWN PLUS M](-SPECTROMETRY() BY ELECTROSPRAY MASS), Journal of mass spectrometry., 32(4), 1997, pp. 432-437
Citations number
20
Categorie Soggetti
Chemistry Inorganic & Nuclear",Spectroscopy,Biophysics
Journal title
Journal of mass spectrometry. → ACNP
ISSN journal
10765174
Volume
32
Issue
4
Year of publication
1997
Pages
432 - 437
Database
ISI
SICI code
1076-5174(1997)32:4<432:EOSARC>2.0.ZU;2-#
Abstract
The selectivity of the lariat crown ethers toward metal ions can be es timated easily using electrospray mass spectrometry. Two lariat crown ethers in the sym-dibenzo-16-crown-5 series were shown to be more sele ctive towards Li+ than Na+ ions in methanol. Calibration for the relat ive cationization efficiencies of the metallated crowns [crown + M](+) was shown to be essential for comparison of the selectivities in liga nd-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. (C) 1997 by John Wil ey & Sons, Ltd.