Gallium complexes carboxylates

The triazenide anion, RN=N NR, is formally isolobal with the carboxylate anion. However, while there are no well-characterized examples of gallium tris-carboxylates (see Section 8.7), the (hT-diphenyltriazenide) complex Ga(dpt)3 (14) has been isolated and fully characterized. ... 

H. W. Heuer and R. Wehrmann, Five-Coordinate of Gallium(III) Carboxylate Complexes With Blue/Blue-Green Photo- and Electroluminescence, Procedures for their Production as Well as their Use, DE 10225826, 2003. 

Crystals of complex 112 suitable for an X-ray structure determination were obtained on cooling a solution in pentane to — 30 °C. The structure determined is shown in Fig. 7.9. The most remarkable structural feature of 112 is that the gallium center is connected to the zirconium through two different c-carboxylic bridges. One of them contains the cyclo-C6Hg system, which is t]1-bonded to gallium and r 2-coordinated to zirconium. It is noteworthy that carbon atom C-2 is planar tetracoordinate. It is connected to four neighboring atoms in the c-plane, specifically to carbon atoms C-l and C-3 and to both metal centers [175]. 

Gallium. The barrier to rotation about the Ga-N bond in [Me2GaNMe(C6H2-2,4,6-BuS)] has been determined. "" and NMR spectroscopy has been used to demonstrate carboxyl exchange in a gallium citrate complex. " ... 

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