IDENTIFICATION OF ORGANOGERMANIUM COMPOUNDS AS MATRIX COMPLEXES IN FAST-ATOM-BOMBARDMENT MASS-SPECTROMETRY

The application of aqueous matrices to fast atom bombardment mass spec trometry enables the detection of several organogermanium compounds as specific complexes with matrices. In the positive-ion mode, the organ ogermanium compounds showed a dominant ion [M+matrix-3 . H2O+H](+) who se dehydration involved atoms attached to the germanium atom, On the o ther hand, two types of fragmentation were observed in the negative-io n mode, The first was a group of compounds, with a carboxy group, that formed a lactone ring and showed a dominant ion at [M+matrix-3 . H2O- H](-). The other group, without carboxy, attached another matrix molec ule and showed a dominant fragment ion at [M+2 . matrix-3 . H2O-H](-). The investigation of these complex structures was performed using var ious matrices and D2O treatment.