Adsorbabilities of diacidotetrammine type cobalt(III)complex ions on a cation exchanger

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  • Adsorbabilities of diacidotetrammine type cobalt III complex ions on a cation exchanger

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<jats:title>Abstract</jats:title> <jats:p>Additional elution experiments for confirming the fact that the trans ions of the diacidotetrammine-type complexes are always eluted faster than the corresponding cis ions have been performed by using several diacido-type complexes which are relatively unstable. By comparing the elution maxima for the whole complex ions which have been used to date, the relative adsorbabilities of the isomeric ions on a cation exchanger have been predicted as follows:</jats:p> <jats:p>For the trans ions,</jats:p> <jats:p>[Co en2(NCS)2]+&lt;[Co en2(NO2)2]+\simeq</jats:p> <jats:p>[Co en2Br2]+&lt;[Co en2Cl2]+\simeq</jats:p> <jats:p>[Co en2NO2Cl]+&lt;[Co(NH3)4(NO2)2]+&lt;</jats:p> <jats:p>[Co en(NH3)2Cl2]+</jats:p> <jats:p>For the cis ions,</jats:p> <jats:p>[Co en2Cl2]+&lt;[Co en2(NCS)2]+&lt;</jats:p> <jats:p>[Co en(NH3)2Cl2]+\simeq[Co en2NO2Cl]+&lt;</jats:p> <jats:p>[Co en2(NO2)2]+&lt;[Co(NH3)4(NO2)2]+</jats:p> <jats:p>A part of the present work was supported by a grant-in-aid from the Ministry of Education.</jats:p>

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