JMSSJ On-line, Vol. 45 (1997) No. 3, pp. 471-477
Coordination of Divalent Metal Cation to 1,2-Hexadecanediol to Form Adduct Ion in Fast Atom Bombardment Mass Spectrometry
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    Naoko MORISAKI, Kazuhiko INOUE, and Shigeo IWASAKI*

    * Institute of Molecular and Cellular Biosciences, The University of Tokyo (1-1-1 Yayoi, Bunkyo-ku, Tokyo 113, Japan)

Coordination of metal cation (Mg2+, Ca2+, Ba2+, Mn2+, Fe2+, Co2+) (reagent: MCl2) to oxygens in 1,2-hexadecanediol (L) affords ion peaks [L+M2+-H+]+ (A), [L+M2++Cl-]+ (B), [2L+M2+-H2O+Cl-]+ (C), [2L+M2++Cl-]+ (D) in positive ion fast atom bombardment mass spectrometry. The plausible structures suggest that the divalent metal ions coordinate to two to four oxygens. The metal cation Fe3+ is reduced to Fe2+, which forms the ion peaks B, C, and D.

Key words: Divalent metal cation, Adduct formation, 1,2-Diol, Fast atom bombardment mass spectrometry

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