Synthesis, structure and fluxionality of Co(III) complexes containing chelated sulfate

Show simple item record Mohabeer, Poornasha K Carr, Bronte Hanif, Muhammad Hartinger, Christian Groutso, Tatiana Jelley, Rebecca E Söhnel, Tilo Blackman, Allan G 2021-10-05T05:06:52Z 2021-10-05T05:06:52Z 2020-1-1
dc.identifier.issn 0277-5387
dc.description.abstract The syntheses and characterisation of the complexes [Co(pmea)(O2SO2)]ClO4 and [Co(pmap)(O2SO2)]ClO4 (pmea = bis((2-pyridyl)methyl)-2-((2-pyridyl)ethyl)amine; pmap = bis(2-(2-pyridyl)ethyl)(2-pyridylmethyl)amine), containing chelating sulfato ligands, are reported. These were prepared by oxidation of a solution containing CoSO4·7H2O and the tripodal tetraamine ligand with either (NH4)2[Ce(O2NO)6] (pmea) or Oxone (2KHSO5·KHSO4·K2SO4; pmap), and their structures were confirmed by X-ray crystallography. [Co(pmap)(O2SO2)]ClO4 crystallised as the 6-isomer from aqueous NaClO4 solution, while [Co(pmea)(O2SO2)]ClO4 was obtained as a mixture of the 5- and 6-isomers, with both isomers being able to be resolved in the X-ray structure. Comparison of the IR spectra of [Co(pmap)(O2SO2]ClO4 and [Co(pmap)(O2CO)]ClO4 allowed assignment of IR bands due to the chelated sulfato ligand. Fluxionality in [Co(pmea)(O2SO2)]ClO4 was resolved using 1H VT-NMR, and was found to result from ‘flapping’ of the pyridylethyl arm of the pmea ligand between two possible conformations.
dc.language en
dc.publisher Elsevier BV
dc.relation.ispartofseries Polyhedron
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.
dc.subject Science & Technology
dc.subject Physical Sciences
dc.subject Chemistry, Inorganic & Nuclear
dc.subject Crystallography
dc.subject Chemistry
dc.subject Sulfate
dc.subject Chelate
dc.subject Fluxional
dc.subject Cobalt(III)
dc.subject VT-NMR
dc.subject COBALT(III)
dc.subject REACTIVITY
dc.subject CARBONATE
dc.subject HYDROLYSIS
dc.subject STABILITY
dc.subject CHEMISTRY
dc.subject 0302 Inorganic Chemistry
dc.subject 0306 Physical Chemistry (incl. Structural)
dc.subject 0399 Other Chemical Sciences
dc.title Synthesis, structure and fluxionality of Co(III) complexes containing chelated sulfate
dc.type Journal Article
dc.identifier.doi 10.1016/j.poly.2019.114303
pubs.begin-page 114303
pubs.volume 176 2021-09-18T22:34:35Z
dc.rights.holder Copyright: The author en
pubs.publication-status Published
dc.rights.accessrights en
pubs.subtype Article
pubs.subtype Journal
pubs.elements-id 789815
pubs.number 114303

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