Abstract
Structure, Tris(trimethylsilyl)aluminium, Sodium-tetrakis(trimethylsilyl)aluminate The crystal and molecular structures of three trimethylsilylaluminium compounds -tris(trimethylsilyl)aluminium coordinated to a diethylether molecule (1), sodium-tetrakis-(trimethylsilyl)aluminate coordinated to two toluene molecules (2b) and unsolvated sodium-tetrakis(trimethylsilyl)aluminate (2a) -have been determined by X-ray structure analysis. In all three compounds the aluminium is tetrahedrally coordinated, the Al-Si-distances lying between 2.44 and 2.49 Å. (1) is monomeric and (2a) and (2b) form linear chains resulting from contact-ion pair interactions.
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