PUB - Publikationen an der Universität Bielefeld

The introduction of a number of unsaturated fluorinated and chlorinated substituents onto gallium and indium was investigated. Gallate, [GaR4]-, and indate, [InR4]-, anions with trifluorovinyl (CF=CF2), 1-chloro-2,2-difluorovinyl (CCl=CF2), (E)-pentafluoropropen-1-yl (E-CF=CFCF3), 3,3,3-trifluoropropynyl (C equivalent to C-CF3) and dichloromethyl (CHCl2) substituents were synthesized and isolated as the respective tetraphenylphosphonium salts. The respective gallate and indate salts were characterized by various methods, including NMR spectroscopy, mass spectrometry and X-ray diffraction analysis. The generation of the respective organyllithium reagents, required for the syntheses of the gallate and indates, was performed starting from commercially available materials. This series of novel gallate and indate salts extends the chemistry of electron withdrawing groups to gallium and indium compounds. A host of perfluorinated unsaturated electron withdrawing groups are introduced to gallium and indium in the form of novel gallate and indate salts. These gallates and indates constitute an important first step for future investigations into the respective strong Lewis acids.image