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Fig. 2. ESI-MS mass peaks of the Si9 species (top: measured spectrum, bottom: simulated isotope pattern): (a) {Si(TMS)3}3Si9 (1a), m/z = 996; (b) {Si(TMS)3}2Si9 from mass fragmentation (1b), m/z = 748; (c) (SnCy3)3Si9 (2a), m/z = 1357; (d) (SnCy3)2Si9 (2b), m/z = 989. For details of the measurement, see ESI.‡
.