Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 204, Issue 1-3, Pages 185-196Publisher
ELSEVIER
DOI: 10.1016/S1387-3806(00)00365-1
Keywords
transition metal; monosaccharide; electrospray ionization; quadrupole ion trap; mass spectrometry
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Metal(II) N-glycoside complexes of N-acetyl neuraminic acid are synthesized and analyzed by electrospray ionization ion trap mass spectrometry. The dissociation products For various ligands (1,3-diaminopropane and diethylenetriamine) and metals (Co, Ni. Cu, Zn) are compared and contrasted. Most notable were the differences in the cross-ring cleavages: the X-0.4 cross-ring cleavage seems to be favored by the 1,3-diaminopropane ligand, whereas the X-0.2, X-0.4-H2O, and X-0.4 cross-ring cleavages are prevalent in the diethylenetriamine ligand complexes. Dissociation mechanisms are postulated based on the results of H-2 and C-13 labeling experiments. (C) 2001 Elsevier Science B.V.
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