Abstract
The ionic cis-dichloroplatinum(II) complexes of glycine, phenylalanine, and tyrosine; and the non-ionic complexes with methyl methionate, methyl leucylmethionate, and leucylmethionamide were analyzed by fast atom bombardment, field desorption, and desorption chemical ionization mass spectrometry. Negative ion fast atom bombardment spectra of the ionic complexes contained (M-K) and (M-H) ions, considerable fragmentation, and adduct ions with water and the glycerol matrix. No useful results were obtained for the non-ionic complexes. While technically more difficult, field desorption analyses were successful for both ionic and non-ionic complexes. Information was limited to a determination of the molecular weight due to the absence of fragment ions. Desorption chemical ionization spectra were successful only with the non-ionic complexes. Spectra contained protonated molecular ions and structurally significant fragments.
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