Syntheses and Structures of P-Anilino-P-chalcogeno- and P-Anilino-P-iminodiazasilaphosphetidines and Their Group 12 and 13 Metal Compounds
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The P-anilino-P-chalcogeno(imino)diazasilaphosphetidines [Me2Si(-NtBu)2P=E(NHPh)] (E = O (3), S (4), Se (5),N-p-tolyl (6)) were synthesized by oxidizing the P-anilinodiazasilaphosphetidine [Me2Si(NtBu)2P(NHPh)] (2) withcumene hydroperoxide, sulfur, selenium, and p-tolyl azide, respectively. The lithium salt of 4 reacted with thalliummonochloride to produce {[Me2Si(-NtBu)2P=S(NPh)-chars/kappa.gif" BORDER=0 >N-chars/kappa.gif" BORDER=0 >S]Tl} (7), which features a two-coordinate thallium atom.Treatment of 4-6 with AlMe3 gave the monoligand dimethylaluminum complexes {[Me2Si(-NtBu)2P=E(NPh)-chars/kappa.gif" BORDER=0 >N-chars/kappa.gif" BORDER=0 >E]AlMe2} (E = S (8), Se (9), N-p-tolyl (10)), respectively. In these complexes the aluminum atom is tetrahedrallycoordinated by one chelating ligand and two methyl groups, as a single-crystal X-ray analysis of 8 showed. A 2equiv amount of 4-6 reacted with diethylzinc to produce the homoleptic diligand complexes {[Me2Si(-NtBu)2P=E(NPh)-chars/kappa.gif" BORDER=0 >N-chars/kappa.gif" BORDER=0 >E]2Zn} (E = S (11), Se (12), N-p-tolyl (13)). A crystal-structure analysis of 11 revealed a lineartetraspirocycle with a tetrahedrally coordinated, central zinc atom.

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