Synthesis and Characterization of Metal Complexes (M = Al,Ti, W,Zn) Containing Pyrrole‐imine Ligands |
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| Authors: | Yu‐Cai Chen Wan‐Ting Chiu Ting‐Jia Hu Chia‐Her Lin Jui‐Hsien Huang |
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| Institution: | 1. Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan, Tel: +886‐4‐7232105 ext 3512;2. Department of Chemistry, Chung‐Yuan Christian University, Chun‐Li 320, Taiwan |
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| Abstract: | A series 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 AlC4H3N‐(2‐CH=N? CH2Ph)]Me2 ( 2 ) and AlC4H3N‐(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 TiC4H3N‐(2‐CH=NCH2Ph)]2(OiPr)2 ( 4 ), WC4H3N‐(2‐CH=NCH2Ph)]2(=NtBu)2 ( 5 ), and ZnC4H3N‐(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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| Keywords: | Pyrrole‐imine Bis‐(pyrrole‐imine) aluminum Tungsten compound Titanium Zinc |
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