SCHEDULED MAINTENANCE
Monomeric, N-functionalised amido complexes of aluminium: synthesis of [ AlCl{NR(8-C9H6N)}2](R = H or SiMe3) and [ Al{N(2-C5H4N)-(2-C5H4N)}3]
Abstract
Routes have been devised to a series of aluminium(III) amide complexes containing either of the bulky, N-functionalised amides NR(8-C9H6N)–(R = H or SiMe3) or N(2-C5H4N)2–. Reaction of the lithium amides [{[graphic omitted])]}2](R = H or SiMe3) with AlCl3 afforded [[graphic omitted])}2](R = H or SiMe3) respectively. The crystal structure of five-co-ordinate [[graphic omitted])}2] shows it to be monomeric in the solid state with intramolecular dative interactions between the aluminium centre and both aromatic nitrogen atoms. Treatment of NH(2-C5H4N)2 with [AlH3(NMe3)] yielded the six-co-ordinate complex [[graphic omitted])(2-C5H4N)}3], the crystal structure of which confirms it to be monomeric with intramolecular Al–N (aromatic) dative bonds from one pyridyl functionality of each amide ligand. In solution this complex exhibits fluxional behaviour which has been investigated by variable-temperature 1H NMR spectroscopy.
Please wait while we load your content...
