SUBSTITUTION-REACTIONS OF ALUMINUM ORGANOAMIDE COMPLEXES [AL(MU-NR2)(N)CL3-N](2) (R=ET, PR-I N-LESS-THAN-OR-EQUAL-TO-3) WITH LINR'R'' (R'=R''=PR-I, ET - R'=H, R''=PR-I) - CRYSTAL-STRUCTURE OF [AL(MU-NET2)((NPR2)-PR-I)X](2) (X=CL,H) AND AL(NH3)(NH2)[AL((NPRH)-PR-I)((NPR)-PR-I)CL](2))(2)

As part of our ongoing study of different substituents of Al2N2 ring s ystems, the synthesis, structural characterization, and spectroscopic studies on several amido derivatives of four-coordinated aluminum are described. The compounds Al-2(NEt2)(2)((NPr2)-Pr-i)(2)Cl-2, 1, Al-2((( NPr2)-Pr-i)(4)Cl-2, 2, Al(((NPr2)-Pr-i)(3), 3, Al(NEt2)(3), 4, {Al((NP rH)-Pr-i)(3)}(3), 5, Al-2(NEt2)(2)((NPr2)-Pr-i)(2)H-2, 6, and l(NH3)(N H2)[Al((NPrH)-Pr-i)((NPr)-Pr-i)Cl](2)}(2), 7, were synthesized by subs titution reactions and characterized by mass spectra, IR spectra, elem ental analysis, and H-1, C-13, and Al-27 NMR data. The structures of t hree compounds, viz., 1, 6, and 7, have been determined by single-crys tal X-ray diffraction analysis. Crystal data with Mo K alpha (1 and 7, lambda = 0.710 73 Angstrom) or Cu K alpha (6, lambda = 1.541 78 Angst rom) radiation: (1) Al2N4C20H48Cl2, a = 7.747(2) Angstrom, b = 9.648(2 ) Angstrom, c = 10.110(3) Angstrom, alpha = 102.91(2)degrees, beta = 8 3.54(2)degrees, gamma = 110.19(2)degrees, triclinic, space group P (1) over bar, Z = 1, R = 0.053 for 1789 (I > 3 sigma(I)) reflections; (6) Al2N4C20H50, a = 15.088(2) Angstrom, b = 14.506(3) Angstrom, c = 12.4 39(3) Angstrom, orthorhombic, space group Cmca (No. 64), Z = 4, R = 0. 045 for 701 (I > 3 sigma(I)) reflections; (7) Al7N14C30H86Cl7, a = 29. 914(9) Angstrom, b = 10.197(3) Angstrom, c = 20.525(5) Angstrom, beta = 90.99(4)degrees, monoclinic, space group C2/c, Z = 4, R = 0.042 for 2472 (I > 2 sigma(I)) reflections.