ダウンロード数 : ?
タイトルヨミ
イオン ト ヨウバイ ノ ソウゴ サヨウ ニ カンスル ケンキュウ 5 アセチルアセトンチュウ ノ エンカブツ イオン ヨウバイ カン ソウゴ サヨウ ニ カンスル ノート
日本語以外のタイトル
Studies on lon-Solvent Interactions(V) : Note on The Chloride Ion-Solvent Interactions in Acetylacetone
ファイル
言語
英語
著者
坂本 一光
岡崎 敏
内容記述(抄録等)
The free energies of transfer (ΔG^0_<tr>) of the chloride ion from water to such alcohols (ROH) as methanol (MeOH), ethanol (EtOH), 1-propanol (1-PrOH), 2-propanol (2-PrOH), and 1-butanol (1-BuOH) have been determined potentiometrically at 25℃ by using a silver-silver chloride electrode as an indicator electrode. The reference electrode used was a siver-silver perchlorate (0.01 mol <dm>^<-3> in acetylacetone (Hacac)) electrode and the salt bridge was the 0.1 mol <dm>^<-3> tetraethylammonium picrate solution of Hacac. Acetylacetone was a less basic and less acidic amphiprotic solvent and was used as the solvent for the reference electrode and salt bridge. It was also used as the reference solvent in the complexing of the chloride ion with water and alcohols. The ΔG^0_<tr> (Cl^- : H_2O→ROH) values in kcal mol^<-1> (1 cal=4.184 J) were 3.4 for MeOH, 5.4 for EtOH, 5.9 for 1-PrOH, 7.1 for 2-PrOH, and 7.0 for 1-BuOH. The ΔG^0_<tr> (Cl^- : H_2O→Hacac) value was estimated to be 8.4 kcal mol^<-1> by using the values of ΔG^0_<tr> (Ag^+ : H_2O→Hacac) and the solubility products of silver chloride in water and Hacac. The complex formation through hydrogen bonding of the chloride ion with water and alcohols have also been studied in Hacac by potentiometry. The maximum coordination numbers of the chloride ion were detected to be 6 for water, 5 for MeOH, 4 for EtOH, 3 for 1- and 2-PrOH, and 2 for l-BuOH, respectively. The solvent effect on the solvent transfer and the complexing of the chloride ion was discussed in connection with the solvent acidity.
掲載誌名
島根大学教育学部紀要. 自然科学
21
開始ページ
137
終了ページ
145
ISSN
05869943
発行日
1987-12-25
NCID
AN00107941
出版者
島根大学教育学部
出版者別表記
The Faculty of Education Shimane University
資料タイプ
紀要論文
部局
教育学部
他の一覧
このエントリーをはてなブックマークに追加