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Analysis and Isolation of Cationic Rhenium(I) and Ruthenium(II) Multinuclear Complexes Using Size-Exclusion Chromatography

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Abstract

Various cationic rhenium(I) and ruthenium(II) mono- and multinuclear complexes were successfully separated by size-exclusion chromatography (SEC), using a 50:50 (v/v) mixture of methanol and acetonitrile with CH3CO2NH4 as an eluent. The logarithms of the molecular weights were accurately linear in the distribution coefficients: for linear-shaped rhenium(I) multinuclear complexes, log MW =–2.86KSEC + 5.24 (r = −0.990 and n = 15); for ring-shaped rhenium(I) multinuclear complexes, log MW = −2.94KSEC + 5.40 (r = −0.999; n = 5); for bimetallic complexes including ruthenium(II), log MW = −0.40KSEC + 3.37 (r = −0.959; n = 6). This separation method is applicable to the preparative-scale separation of cationic multinuclear complexes from a mixture.

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Correspondence to Osamu Ishitani.

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Takeda, H., Yamamoto, Y., Nishiura, C. et al. Analysis and Isolation of Cationic Rhenium(I) and Ruthenium(II) Multinuclear Complexes Using Size-Exclusion Chromatography. ANAL. SCI. 22, 545–549 (2006). https://doi.org/10.2116/analsci.22.545

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  • DOI: https://doi.org/10.2116/analsci.22.545

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