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Synthesis and Characterization of Metal Complexes (M = Al, Ti, W, Zn) Containing Pyrrole‐imine Ligands
Author(s) -
Chen YuCai,
Chiu WanTing,
Hu TingJia,
Lin ChiaHer,
Huang JuiHsien
Publication year - 2015
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201400138
Subject(s) - chemistry , imine , pyrrole , ligand (biochemistry) , medicinal chemistry , metal , yield (engineering) , nuclear magnetic resonance spectroscopy , stereochemistry , crystallography , organic chemistry , catalysis , biochemistry , receptor , materials science , metallurgy
A series of metal compounds (M = Al, Ti, W, and Zn) containing pyrrole‐imine ligands have been prepared and structurally characterized. The reactions of AlMe 3 with one and three equivs of pyrrole‐imine ligand [C 4 H 3 NH‐(2‐CH=NCH 2 Ph)] ( 1 ) generated aluminum compounds Al[C 4 H 3 N‐(2‐CH=NCH 2 Ph)]Me 2 ( 2 ) and Al[C 4 H 3 N‐(2‐CH=NCH 2 Ph)] 3 ( 3 ), respectively, in relatively high yield. Reacting two equivs of 1 with Ti(O i Pr) 4 , W(NH t Bu) 2 (=N t Bu) 2 , or ZnMe 2 afforded Ti[C 4 H 3 N‐(2‐CH=NCH 2 Ph)] 2 (O i Pr) 2 ( 4 ), W[C 4 H 3 N‐(2‐CH=NCH 2 Ph)] 2 (=N t Bu) 2 ( 5 ), and Zn[C 4 H 3 N‐(2‐CH=NCH 2 Ph)] 2 ( 6 ), respectively. All the compounds have been characterized by 1 H and 13 C 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 MN pyrrole and MN imine bond lengths increase in the order of 6 , 3 , 4 , and 5 .