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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
- Authors
- Mijanuddin, Md.; Jana, Atish Dipankar; Drew, Michael G. B.; Hong, Chang Seop; Chattopadhyay, Basab; Mukherjee, Monika; Nandi, Mahasweta; Bhaumik, Asim; Helliwell, Madeline; Mostafa, Golam; Ali, Mahammad
- Issue Date
- 12-3월-2009
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Cu-II-complexes; Concomitant polymorphism; Antiferromagnetically coupled; Immobilization; Hexagonal mesoporous silica; Heterogeneous catalysis; Epoxidation
- Citation
- POLYHEDRON, v.28, no.4, pp.665 - 672
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYHEDRON
- Volume
- 28
- Number
- 4
- Start Page
- 665
- End Page
- 672
- ISSN
- 0277-5387
- 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 I 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. (C) 2009 Elsevier Ltd. All rights reserved.
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