MASS SPECTROSCOPIC INVESTIGATIONS OF SOME [1]TITANOCENOPHANES

The mass spectra of the [1]titanocenophanes Me2Si(C5H4)2TiCl2, MeHSi(C 5H4)2TiCl2, Et2Si(C5H4)2TiCl2, Me2Si(C5H4)(C5H3Me)TiCl2, and Me2SiC5H3 Me)2TiCl2 have been, measured and discussed. The molecular ions decomp ose essentially through the elimination of HCI and Cl forming intense [M-HCl]+, [M-2HCl]+, and [M-Cl]+ ions. The fragment [TiC10H8]+ corresp onding to the titanocene system is present in each spectrum and moreov er in two cases constitutes the most abundant ion. This suggests that the titanocene system is particularly stable.