The reaction of N,N’-bis(trimethylsilyl)ethylenediamine with H3Al . NMe(3) gives products based on metalation (H-2 elimination), [{[CH2N(SiMe(3))]2AlH}(2)] (1) and [{CH2N(SiMe(3))}2AlN(SiMe(3))CH2CH2N(H)SiMe(3)] (2), as well as products derived from N-Si bond cleavage and metalation, [{[CH2N(SiMe(3))]2AlH}(2){HAlN(SiMe(3))CH2CH2NAlH2}] (4) and [H2Al{CH2N(SiMe(3))}2AlN(SiMe(3))CH2CH2NAl(H)(2) . NMe(3)}] (5). Similarly, [Me(3)SiN(H)CH2CH2N(SiMe(3))AlCl2] (3) was isolated as the redistributed/metalated product from the reaction of the same diamine with H2Al(Cl). NMe(3). The following crystal data were obtained : (1) monoclinic, space group P2(1)/c (No. 14), a = 13.636(4) Angstrom, b = 9.565(3) Angstrom, c = 22.683(4) Angstrom, beta = 105.67(2)degrees, Z = 4; (2) monoclinic, space group C2/c (No. 15), a = 31.887(3) Angstrom, b = 10.145(6) Angstrom, c = 17.718(3) Angstrom, beta = 100.36(1)degrees, Z = 8; (3) triclinic, space group P (1) over bar (No. 2), a = 11.762(3) Angstrom, b = 11.927(3) Angstrom, c = 7.288(2) Angstrom, alpha = 107.46(2)degrees, beta = 95.29(2)degrees, gamma = 110.41(2)degrees, Z = 2; (4) triclinic, space group P (1) over bar (No. 2), a = 13.884(4) Angstrom, b = 15.379(4) Angstrom, c = 11.044(2) Angstrom, alpha = 102.11(2)degrees, beta = 103.85(2)degrees, gamma = 109.28(2)degrees, Z = 2; (5) triclinic, space group P (1) over bar (No. 2), a = 10.925(5) Angstrom, b = 11.060(5)Angstrom, c = 12.726(4) Angstrom, alpha = 92.38(3)degrees, beta = 95.67(2)degrees, gamma = 96.90(2)degrees, Z = 2.