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Concomitant polymorphism of an antiferromagnetically coupled dicopper(II,II) complex with single strand helical assembly: Synthesis,structure, DSC,magnetic and heterogeneous catalytic studies |
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| Authors: | Md. Mijanuddin Atish Dipankar Jana Michael G.B. Drew Chang Seop Hong Basab Chattopadhyay Monika Mukherjee Mahasweta Nandi Asim Bhaumik Madeline Helliwell Golam Mostafa Mahammad Ali |
| Affiliation: | 1. Department of Chemistry, Jadavpur University, Kolkata 700 032, India;2. Department of Physics, Sripat Singh College, Jiaganj, Murshidabad, WB 742 123, India;3. Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK;4. Department of Chemistry and Center for Electro- and Photo-Responsive Molecules, Korea University, Seoul 136-701, Republic of Korea;5. Solid State Physics Department, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India;6. Department of Materials Science and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India;g Department of Chemistry, University of Manchester, Manchester M13 9PL, UK;h Department of Physics, Jadavpur University, Kolkata 700 032, India |
| Abstract: | Two concomitant polymorphic coordination complexes (dark blue – I and black – II) with the formula (Cu2C44H60N4O4) have been synthesized and characterized crystallographically. Magnetic measurements show the presence of a strong antiferromagnetic interaction and the 2J value corresponds extremely well to the theoretically calculated one, indicating the fact that it follows nicely the magneto-structural relationship. Immobilization of the copper(II) complex 1 on a 2D-hexagonal mesoporous silica showed good catalytic efficiency in the liquid phase partial oxidation of olefins in the presence of TBHP as an oxidant. |
| Keywords: | CuII-complexes Concomitant polymorphism Antiferromagnetically coupled Immobilization Hexagonal mesoporous silica Heterogeneous catalysis Epoxidation |
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