Please use this identifier to cite or link to this item: https://repository.cihe.edu.hk/jspui/handle/cihe/2089
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dc.contributor.authorBligh, Annie Sim Wanen_US
dc.contributor.otherChoi, N.-
dc.contributor.otherGeraldes, C. F. G. C.-
dc.contributor.otherKnoke, S.-
dc.contributor.otherMcPartlin, M.-
dc.contributor.otherSanganee, M. J.-
dc.contributor.otherWoodroffe, T. M.-
dc.date.accessioned2021-12-21T04:57:47Z-
dc.date.available2021-12-21T04:57:47Z-
dc.date.issued1997-
dc.identifier.urihttps://repository.cihe.edu.hk/jspui/handle/cihe/2089-
dc.description.abstractA new 18-membered hexaaza macrocyclic ligand with four pendant methylenephosphonates has been synthesized <i>via</i> the Mannich reaction. The protonation behaviour of this macrocycle has been followed by <sup>31</sup>P and <sup>1</sup>H NMR spectroscopy. The initial protonation pattern of the N-functionalised macrocycle is rather like its corresponding macrocyclic amine. The proton NMR spectrum of its lanthanum(III) complex in aqueous solution indicates that the complex adopts only one of the five possible conformations, either <i>SSSS</i> or <i>RRRR</i>. The crystal structure of the novel macrocyclic ligand shows an extended hydrogen-bonded structure in its solid state. The macrocycle has an unusual conformation with the pendants alternating ‘up’ and ‘down’ round the ring. The La<sup>III</sup> complex has a unique ten-co-ordinate geometry with all pendant arms co-ordinated to the La<sup>III</sup> ion which is in the plane of the six macrocyclic nitrogen donors.en_US
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.ispartofJournal of the Chemical Society, Dalton Transactionsen_US
dc.titleA novel hexaaza macrocycle with methylenephosphonate pendant arms: A potential useful chelate for biomedical applicationsen_US
dc.typejournal articleen_US
dc.identifier.doi10.1039/A703678G-
dc.contributor.affiliationSchool of Health Sciencesen_US
dc.relation.issn1477-9234en_US
dc.description.issue21en_US
dc.description.startpage4119en_US
dc.description.endpage4126en_US
dc.cihe.affiliatedNo-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.cerifentitytypePublications-
item.openairetypejournal article-
item.languageiso639-1en-
crisitem.author.deptS.K. Yee School of Health Sciences-
crisitem.author.orcid0000-0002-4757-2159-
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