Antiferromagnetic Exchange in Triclinic Crystals of Tetra-$\mu $-Benzoato-bis(4-Methylquinoline) Dicobalt II

Show simple item record Boyd, Peter en Davies, JE en Gerloch, MG en 2011-12-20T02:40:52Z en 1978 en
dc.identifier.citation Proceedings A: Mathematical, Physical and Engineering Sciences 360(1701):191-210 1978 en
dc.identifier.issn 1364-5021 en
dc.identifier.uri en
dc.description.abstract The magnetic susceptibilities of tetra-$\mu $-benzoato-bis(4-methylquinoline) dicobaltII have been measured and interpreted within the theoretical model described in the preceding paper. Crystals of the title complex are triclinic, a circumstance which has lead to the development of a new technique for the measurement of triclinic crystal susceptibilities using a Faraday balance. The technique is discussed in general terms and is applicable with Faraday equipment employing either longitudinal or, as here, transverse magnetic fields. The magnetic tensor for this binuclear cobalt complex has been determined throughout the temperature range 20-300 K. Good agreement between these results and those calculated from the quantum mechanical model have been obtained in the temperature range 90-300 K. At lower temperatures, a probable small paramagnetic impurity prevents useful theoretical treatment. There emerges an unambiguous conclusion that the antiferromagnetic coupling between the cobalt atoms is almost completely determined by interaction between metal $xy$ orbitals, presumably via a superexchange process involving the delocalized$\pi $ bonding framework of the bridging carboxylate groups. en
dc.language EN en
dc.publisher The Royal Society en
dc.relation.ispartofseries Proceedings of the Royal Society of London Series A - Mathematical Physical and Engineering Sciences en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
dc.title Antiferromagnetic Exchange in Triclinic Crystals of Tetra-$\mu $-Benzoato-bis(4-Methylquinoline) Dicobalt II en
dc.type Journal Article en
dc.identifier.doi 10.1098/rspa.1978.0063 en
pubs.issue 1701 en
pubs.begin-page 191 en
pubs.volume 360 en
dc.rights.holder Copyright: The Royal Society en
pubs.end-page 210 en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 222632 en
pubs.record-created-at-source-date 2011-12-20 en

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