Synthesis and structures of intramolecularly base-coordinated aryl group 15 compounds
1996
Several group 15 compounds of the type EAr3 (Ar = 2-[(dimethylamino)methyl]phenyl; E = As (4), Sb (5), Bi (6)) have been prepared via salt elimination reactions of 2-(Me2NCH2)C6H4Li and ECl3. Treatment of the lithium salt of the 8-(dimethylamino)-1-naphthyl ligand (Ar‘) with AsCl3 afforded a triaryl derivative, AsAr‘3 (7). The X-ray crystal structures of 4−7 are described, and the observed trends in the degree of intramolecular coordination of the nitrogen atoms are discussed. Crystal data for 4: monoclinic, space group P21/c, a = 8.9336(6) A, b = 16.347(2) A, c = 17.875(2) A, β = 102.540(7)°, V = 2548.2(4) A3, Z = 4, R = 0.0579. Crystal data for 5: monoclinic, space group P21, a = 9.288(2) A, b = 18.356(4) A, c = 15.566(2) A, β = 90.28(2)°, V = 2654.1(8) A3, Z = 4, R = 0.0520. Crystal data for 6: monoclinic, space group P21, a = 9.2996(12) A, b = 18.445(3) A, c = 15.601(2) A, β = 90.076(11)°, V = 2676.1(7) A3, Z = 4, R = 0.0783. Crystal data for 7: monoclinic, space group P21/c, a = 9.5744(12) A, b = 16....
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