When the trimethyl derivatives of aluminium, gallium and indium react with glyoximato metallates, (R2C2N2(O)OH)2MetII (R = H, CH3; MetII = Ni, Pd, Pt, Cu), in a molar ratio, 2 mol of methane are evolved and monomeric bis(dimethylmetal(III)glyoximato)metallates(II) (metal(III) = Al, Ga, In) are formed in high yields. The vibrational and NMR spectra of the new complexes were measured and were
... [Show full abstract] partly resolved. The X-ray structure determinations of two of these compounds show non-planar structures of approximate C2h and C2 symmetry, respectively, with weak metal(III)⋯metal(II) π-interactions.ZusammenfassungAluminium-, Gallium- und Indiumtrimethyle reagieren mit Glyoximatometallaten, (R2C2N2(O)OH)2MetII (R = H, CH3; MetII = Ni, Pd, Pt, Cu), im Molverhältnis , wobei neben 2 Mol Methan monomere Bis(dimethylmetall(III)glyoximato)metallate(II) (Metall(III) = Al, Ga, In) in hohen Ausbeuten gebildet werden. Die Schwingungs- und NMR-Spektren der Komplexe wurden vermessen und teilweise zugeordnet. Die Röntgenstrukturanalysen zweier Verbindungen zeigen nicht-planare Strukturen, angenähert der Symmetrie C2h bzw. C2, mit schwachen Metall(III)⋯Metall(II)-π-Wechselwirkungen.