ORGANOMETAL FLUORIDES OF ALUMINUM, GALLIUM, INDIUM AND THALLIUM

Diorganometal fluorides can be synthesized by reaction of the correspo nding metallanes with synthons like BF3 .(OEt), and Me3SnF. A second g eneral synthesis strategy is the fluoridation of diorganometal halides with alkali metal fluorides or silver fluoride. Organometal difluorid es of Al, Ga and In are either unknown or can be obtained in special c ases only. Arylthallium difluorides are the result of the reaction of arylthallium bis(trifluoroacetates) and alkali or ammonium fluorides. Various types of salts with anions like [R3RM](-), [R2MF2](-), [RMF3]( -) and [R3MFMR3](-) have been synthesized by the treatment of the corr esponding educts R3M, R2MX, RMX2 with salt-like fluorides. The IR and NMR spectroscopical data and the structural investigation show the mai nly ionic character of the metal fluorine bond. (C) 1997 Elsevier Scie nce S.A.