Concomitant polymorphism of an antiferromagnetically coupled dicopper(II,II) complex with single strand helical assembly: Synthesis, structure, DSC, magnetic and heterogeneous catalytic studies

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

doi:10.1016/j.poly.2008.12.047

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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

Mijanuddin, Md.;
Jana, Atish Dipankar;
Drew, Michael G. B.;
Hong, Chang Seop;
Chattopadhyay, Basab;
외 6명

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초록

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.

키워드

Cu-II-complexes; Concomitant polymorphism; Antiferromagnetically coupled; Immobilization; Hexagonal mesoporous silica; Heterogeneous catalysis; Epoxidation; RAY CRYSTAL-STRUCTURES; GALACTOSE-OXIDASE; COPPER(II) COMPLEXES; AEROBIC OXIDATION; CU-II; DINUCLEAR COPPER(II); MOLECULAR-CRYSTALS; MACROCYCLIC LIGAND; MESOPOROUS SILICA; PRIMARY ALCOHOLS

제목: Concomitant polymorphism of an antiferromagnetically coupled dicopper(II,II) complex with single strand helical assembly: Synthesis, structure, DSC, magnetic and heterogeneous catalytic studies

저자: 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

DOI: 10.1016/j.poly.2008.12.047

발행일: 2009-03-12

유형: Article

저널명: Polyhedron

권: 28

호: 4

페이지: 665 ~ 672