Syntheses,structures and catalytic activities of molybdenum carbonyl complexes based on pyridine-imine ligands |
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| Authors: | Chen Li Zhihong Ma Suzhen Li Zhangang Han Xuezhong Zheng Jin Lin |
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| Institution: | 1.The College of Chemistry and Material Science,Hebei Normal University,Shijiazhuang,China;2.School of Pharmacy,Hebei Medical University,Shijiazhuang,China;3.Hebei College of Industry and Technology,Shijiazhuang,China |
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| Abstract: | Thermal treatment of pyridine imines C5H4N-2-C(H)=N-C6H4-R] R = H (1), CH3 (2), OMe (3), CF3 (4), Cl (5), Br (6)] with Mo(CO)6 in refluxing toluene provided six novel mononuclear molybdenum carbonyl complexes of the type (η2-2-C5H4N)CH=N(C6H4-4-R)]Mo(CO)4 R = H (7); CH3 (8); OMe (9); CF3 (10); Cl (11); Br (12)]. All of these complexes were separated by chromatography and fully characterized by elemental analysis, IR, and NMR spectroscopy. The crystal structures of complexes 7, 8 and 10 were determined by X-ray crystal diffraction analysis. In addition, the catalytic performance of these complexes was also tested, and it was found that these complexes had obvious catalytic activity on Friedel–Crafts reactions of aromatic compounds with a variety of acylation reagents. |
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