Mass spectra of metal–metal bonded compounds

Organometallic Compounds: 27 NMR and mass spectra of hexasubstituted dimetals of group IV B

“…The mass spectrum of hexaisapropydisilicium is described in The mass spectra have also been recorded for some trialkylmetal hydrides which have been used for the synthesis of the dirnetals [I] (see table 6). As a conclusion one might say that the fragmentation rules which have been described before [2] [3] 141 [5] [8], are also valid for the compounds which have been examined here.…”

“…Rearrangement ions by group transfer from one metal to the other which have already been described by Glocking for the other dimetals [5] can also be seen on the spectrum of hexamethyldigermaniu~n, which gives the fragment Me,GeCH, +. Ions containing two metals are rather important (30-40 %) and the most intense of these fragments is Me,M,+.…”

“…Rearrangement ions by group transfer from one metal to the other are the most interesting features of these mass spectra [5] [6]. DESCRIPTION A N D DISCUSSION OF T H E MASS SPECTRA Table 1 gives the experimental results obtained for hexamethyldimetals (the sum Table 2 describes the monoisotopic mass spectrum of trimethylsilyltrimethyltin.…”

“…Metastable ions have confirmed decomposition by bond cleavage, alkene elimination, molecule elimination by cleavage of one or two M-X bonds or without M-X bond cleavage [5]. Rearrangement ions by group transfer from one metal to the other are the most interesting features of these mass spectra [5] [6].…”

Mass spectra of bis(trimethylsilyl)- and bis(trimethylgermyl)carbodiimide

“…The elimination of C2H6 from Me,GeNCNGeMe,+ is similar to that noted from Me,GeCl+ in the spectrum of Me3GeC1 (6) and the corresponding transition in the silicon analogue is metastable-confirmed. The elimination of C2H4 from Me3Ge+ is a well established pathway (6,7).…”