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- W2994785302 abstract "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." @default.
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- W2994785302 date "2020-01-01" @default.
- W2994785302 modified "2023-10-16" @default.
- W2994785302 title "Synthesis, structure and fluxionality of Co(III) complexes containing chelated sulfate" @default.
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- W2994785302 doi "https://doi.org/10.1016/j.poly.2019.114303" @default.
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