Aseries of metal compounds (M = Al, Ti, W, and Zn) containing pyrrole-imine ligands have been prepared and structurally characterized. The reactions of AlMe3 with one and three equivs of pyrrole-imine ligand [C4H3NH-(2-CH=N-CH2Ph)] (1) generated aluminum compounds Al[C4H3N-(2-CH=N-CH2Ph)]Me2 (2) and Al[C4H3N-(2-CH=NCH2Ph)]3 (3), respectively, in relatively high yield. Reacting two equivs of 1 with Ti(OiPr)4, W(NHtBu)2(=NtBu)2, or ZnMe2 afforded Ti[C4H3N-(2-CH=NCH2Ph)]2(OiPr)2 (4), W[C4H3N-(2-CH=NCH2Ph)]2(=NtBu)2 (5), and Zn[C4H3N-(2-CH=NCH2Ph)]2 (6), respectively. All the compounds have been characterized by 1H and 13C NMR spectroscopy. Compounds 3-6 have also been characterized by single-crystal X-ray structural analysis. The biting angles of pyrrole-imine ligand with metals decrease and their related M-Npyrrole and M-Nimine bond lengths increase in the order of 6, 3, 4, and 5.
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