Derivatographic studies on transition metal complexes. XIX. Thermal isomerization of trans-[CrCl2(en)2](H5O2)Cl2 and trans-[CrCl2(pn)2]Cl 1.5H2O in solid phase.

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概要

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• Thermal <I>trans</I>-to-<I>cis</I> isomerization of [CrCl<SUB>2</SUB>(en)<SUB>2</SUB>](H<SUB>5</SUB>O<SUB>2</SUB>)Cl<SUB>2</SUB> and [CrCl<SUB>2</SUB>(pn)<SUB>2</SUB>]Cl·1.5H<SUB>2</SUB>O was studied in the solid phase by derivatographic and isothermal measurements. The former complex was found to isomerize in anhydrous state after the complete elimination of hydrogen chloride and water, the latter in the temperature range for dehydration. The activation energies for the isomerization of these two complexes were isothermally estimated to be 202 and 193 kJ mol<SUP>−1</SUP>, respectively. The same type of isomerization mechanism is suggested for these complexes, differing from that for the corresponding cobalt(III) complexes in which lattice waters participate.

• 公益社団法人 日本化学会の論文

著者

• Uehara Akira

  Department Of Chemistry Faculty Of Science Kanazawa University

• Kyuno Eishin

  Department of Chemistry Faculty of Science Kanazawa University

• Tsuchiya Ryokichi

  Department of Chemistry, Faculty of Science, Kanazawa University

• Yoshikuni Tadatsugu

  Department of Chemistry, Faculty of Science, Kanazawa University

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