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Abstract
Thermal reactions of Mo(CO)6 with the Schiff base 4-nitro-N-(pyridine-2-yl-methylene)aniline (NPMA) in THF in absence and presence of triphenyl phosphine (PPh3), pyridine (py) or thiourea (Tu) gave the four carbonyl complexes, [Mo(CO)4(NPMA)] (1), [Mo(CO)3(NPMA)(PPh3)] (2) [Mo2(O)2(CO)2(NPMA)2(Py)2] (3), and [Mo2(O)2(CO)4(NPMA)(Tu)2] (4), respectively. Thermal reaction of W(CO)6 with NPMA in THF gave the two complexes [W2(O)6(NPMA)] (5) and [W2(O)6(NPMA)(Py)2] (6) in absence and presence of pyridine, respectively, while under sunlight irradiation the complex [W2(CO)6(NPMA)2] (7) was isolated. Magnetic susceptibility, elemental analyses, and IR, mass, and 1H NMR spectroscopy were studied. Thermal, cyclic voltammetry, catalytic epoxidation, and biological activity were also investigated.
Acknowledgments
The authors gratefully acknowledge the support of Professor Dr. Moustafa Khalil, the Manager of the Central Laboratory, Faculty of Science, Ain Shams University, Egypt.
Funding
Also, the authors express their sincere gratitude to Dr. Ahmed Kotb, Faculty of Science, Cairo University, Egypt, for providing financial support during performing the experimental part of CV in his laboratory.