N,N'-DI-TERT-BUTYLETHYLENEDIAMINE-CLNH3-NALNME(3) DERIVATIVES - ALANE-RICH [(H2AL)(2)(MU-N(BU(T))CH2)2] AND STABLE, INTRAMOLECULAR SECONDARY AMINE ALANE COMPLEXES [CLNH2-NAL( N(H)(BU(T))CH(2)CH(2)NBU(T)], N=0,1

Treatment of N,N'-di-tert-butylethylenediamine with two equivalents of H(3)AlNMe(3) in diethyl ether affords a novel alane-rich amido species [(H2Al)(2){mu-N(Bu(t))CH2}2] 1, whereas with one equivalent a stable, intramolecularly coordinated secondary amine adduct of aluminium dihydride results, [H2Al{N(H)(Bu(t))CH(2)CH(2)NBu(t)] 2; the monochloro analogue [Cl(H)Al{N(H)(Bu(t))CH(2)CH(2)NBu(t)] 3 is accessible using ClH(2)AlNMe(3), as a mixture of diastereoisomers in solution.