A metastable solution of GaCl reacts with LiCp or MgCp(2) compounds to
a number of new cyclopentadienylgallium(I) species: GaCp, GaCp(tBu),
GaCp((SiMe3)3) and GaCp((Benzyl)5). They are characterized by their m
ass and NMR spectra (H-1, C-13 and Ga-71). By comparison with analogou
s Al and Mg compounds eta(5)-bonding has to be concluded for air GaCp
derivatives.