Reaktionen der Digalliumverbindung R2Ga–GaR2 [R = CH(SiMe3)2] mit Wasser und Carbonsäuren – Synthese von μ‐Hydroxo‐μ‐carboxylatodigallium‐Verbindungen unter Erhalt der Ga–Ga‐Bindungen |
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Authors: | Werner Uhl Prof Dr Henrik R Bock Alexander Hepp Friedhelm Rogel Matthias Voß |
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Institution: | Institut für Anorganische und Analytische Chemie, Universit?t Münster, Corrensstra?e 30, 48149 Münster, Germany |
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Abstract: | Treatment of the digallium compound R2Ga–GaR2 1 , R = CH(SiMe3)2] with a broad variety of functionalized carboxylic acids in the presence of water yielded μ‐hydroxo‐μ‐carboxylatodigallium compounds ( 2 – 10 ) containing intact Ga–Ga bonds in high to moderate yields. The compounds form dimeric formula units in which the unsupported Ga–Ga bonds are bridged by two hydroxo and two carboxylato ligands. Each gallium atom is terminally coordinated by a bulky alkyl group. NMR spectroscopy revealed mixtures of two isomeric compounds in solution in all cases. The second component may show a different bridging mode with each Ga–Ga bond bridged by a bidentate carboxylato ligand to form Ga2O2C five‐membered heterocycles. |
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Keywords: | Gallium Subvalent compounds Gallium– gallium bonds Carboxylates NMR spectroscopy |
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