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Issue 1, 1982
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Water-soluble cobalt(II) complexes of NN′-substituted bis(salicylaldimine-5-sulphonic acids). Oxygen-carrying properties and conversion into cobalt(III) organometallic compounds

Abstract

The cobalt(II) complexes of a series of NN′-substituted bis(salicylaldiminesulphonic acids) L =O3SC6H3(O)–CH[double bond, length half m-dash]N–R–N[double bond, length half m-dash]CH–(O)C6H3SO3 with R =(CH2)2, (CH2)3, CH2CH(CH3), and o-C6H4 have been prepared as water-soluble sodium salts, Na2[CoL]. Apart from the spin-free (CH2)3 complex, the remaining spin-paired compounds can be converted into water-soluble organometallic cobalt(III) derivatives. The same cobalt(II) compounds also react readily with oxygen at room temperature to yield mixtures of the superoxo-type [CoL(O2)(OH2)] and peroxo-type [{CoL(OH2)}2(O2)] complexes. The formation of superoxo-type species is reversible at room temperature while the peroxo-species require higher temperatures for dissociation. In the solid state Na2[Co-(SO3-salen)][SO3-salen =NN′-ethylenebis(salicylaldimine-5-sulphonate)] and its ethylenediamine adduct also react to form complexes of the superoxo-type.

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Article type: Paper
DOI: 10.1039/DT9820000109
Citation: J. Chem. Soc., Dalton Trans., 1982,0, 109-116
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    Water-soluble cobalt(II) complexes of NN′-substituted bis(salicylaldimine-5-sulphonic acids). Oxygen-carrying properties and conversion into cobalt(III) organometallic compounds

    K. J. Berry, F. Moya, K. S. Murray, A. M. B. van den Bergen and B. O. West, J. Chem. Soc., Dalton Trans., 1982, 0, 109
    DOI: 10.1039/DT9820000109

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