Effects of N-methylated diamine on ion pair formation of bis(2,4-pentanedionato)(diamine) cobalt(III) bromides in nitrobenzene by conductometry.
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概要
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The conductometric study of bis(2,4-pentanedionato)(diamine) cobalt(III) bromides in nitrobenzene at 25 °C indicated that the ion association constant of the chelate salts increases in the order, [Co(acac)<SUB>2</SUB>(<I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tmen)]Br<Bu<SUB>4</SUB>NBr<[Co(acac)<SUB>2</SUB>(<I>N</I>,<I>N</I>-dmen)]Br<[Co(acac)<SUB>2</SUB>(en)]Br<[Co(acac)<SUB>2</SUB>(<I>N</I>,<I>N</I>′-dmen)]Br (acac=2,4-pentanedione anion, diamine: en=ethylenediamine, <I>N</I>,<I>N</I>-dmen= <I>N</I>,<I>N</I>-dimethylethylenediamine, <I>N</I>,<I>N</I>′-dmen=<I>N</I>,<I>N</I>′-dimethylethylenediamine, <I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tmen=<I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tetramethylethylenediamine). The results were discussed from the view points of hydrogen bonds through the N–H protons of the chelate cations to the bromide anion and cation-solvent interactions.
- 公益社団法人 日本化学会の論文
著者
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Yamamoto Yuroku
Department Of Chemistry Faculty Of Science Hiroshima University
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Ito Kazuaki
Department Of Applied Chemistry Nagoya Institute Of Technology
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Iwamoto Etsuro
Department of Chemistry, Faculty of Science, Hiroshima University
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