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Hydrothermal syntheses, crystal structures and magnetic properties of two copper(ii) complexes involved in situ ligand synthesis

Hydrothermal syntheses, crystal structures and magnetic properties of two copper(ii) complexes... The hydrothermal reaction of Cu(NO), isophthalate (ip) and 2,2′-bipyridine (2,2′-bpy) without or with KCrO affords different complexes, whose structures are controlled only by the addition of the KCrO. The reaction of Cu(NO), isophthalate and 2,2′-bipyridine yields a novel one-dimensional double-chain coordination polymer [Cu(ip)(Hipa)(bpy)] (). However, with the addition of KCrO in the above reaction at the same hydrothermal conditions, a discrete hexanuclear Cu() complex [Cu(ipO)(2,2′-bpy)(HO)]·6HO () (ipOH = 2-hydroxyisophthalate) was isolated. It is interesting to find that the reaction of isophthalate (ip) oxidized to 2-hydroxyisophthalate (ipOH) occurs. KCrO acts as an oxidant. The magnetic properties of and have been investigated by variable-temperature magnetic susceptibility and magnetization measurements, and the results reveal that intramolecular ferromagnetic interactions exist with weak intermolecular antiferromagnetic interactions at very low temperature in and weak antiferromagnetic interactions admixture with strong ferromagnetic interactions in . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Dalton Transactions Royal Society of Chemistry

Hydrothermal syntheses, crystal structures and magnetic properties of two copper(ii) complexes involved in situ ligand synthesis

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References (30)

Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
1477-9226
eISSN
1477-9234
DOI
10.1039/b704327a
pmid
17622419
Publisher site
See Article on Publisher Site

Abstract

The hydrothermal reaction of Cu(NO), isophthalate (ip) and 2,2′-bipyridine (2,2′-bpy) without or with KCrO affords different complexes, whose structures are controlled only by the addition of the KCrO. The reaction of Cu(NO), isophthalate and 2,2′-bipyridine yields a novel one-dimensional double-chain coordination polymer [Cu(ip)(Hipa)(bpy)] (). However, with the addition of KCrO in the above reaction at the same hydrothermal conditions, a discrete hexanuclear Cu() complex [Cu(ipO)(2,2′-bpy)(HO)]·6HO () (ipOH = 2-hydroxyisophthalate) was isolated. It is interesting to find that the reaction of isophthalate (ip) oxidized to 2-hydroxyisophthalate (ipOH) occurs. KCrO acts as an oxidant. The magnetic properties of and have been investigated by variable-temperature magnetic susceptibility and magnetization measurements, and the results reveal that intramolecular ferromagnetic interactions exist with weak intermolecular antiferromagnetic interactions at very low temperature in and weak antiferromagnetic interactions admixture with strong ferromagnetic interactions in .

Journal

Dalton TransactionsRoyal Society of Chemistry

Published: Jul 10, 2007

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