Abstract
AbstractAl2X6Mg[N(C2H5)2]2( X = Cl, Br), A12X4(NR2)2 (R = C2H5, i‐C3H7, X=Cl, Br), AlX3HNR2(R=i‐C3H7) were characterized by means of mass, infrared, and 1H, 13C and 27Al NMR spectra and elemental analyses. The crystal structures of two aluminum complexes, Al2Cl4[N(C2H5)2]2 and AlCl3HN(i‐C3H7)2, were determined by means of single‐crystal X‐ray diffraction, Al2Cl4[N(C2H5)2]2 crystallized in space group Pmcn with unit‐cell dimensions a = 10.577(2), b = 11.799(3) and c = 13.219(4) Å; structure analysis resulted in a final R = 0.043 for 999 observations. AlCl3HN(i‐C3H7)2 crystallized in space group Pcab with unit‐cell dimensions a = 10.545(7), b = 14.630(4) and c = 15.255(2) Å; structure analysis resulted in a final R = 0.041 for 1054 observations. The Al atoms in both structures show a tetrahedral bonding geometry with Al‐N lengths in the range 1.927(3) −1.956(4) A, and Al‐Cl lengths in the range 2.092(3) −2.128(3) Å. The four‐membered ring of Al2N2 in Al2Cl4[N(C2H5)2]2 is almost planar.
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