Association of tris(pentane-2,4-dionato)cobalt(III) with chlorinated phenols by hydrogen bonding
Association of tris(pentane-2,4-dionato)cobalt(III) with chlorinated phenols by hydrogen bonding
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三(戊烷-2,4-二酮)钴(III)与氯化酚通过氢键缔合
DOI：
10.1016/s0277-5387(00)81276-0
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发表时间：
1991
期刊：
影响因子：
2.6
通讯作者：
N. Suzuki
中科院分区：
文献类型：
--
作者：
H. Imura;S. Katsuta;N. Suzuki
在庚烷-0.10moldm−_3高氯酸盐水溶液体系中，用液-液分配技术研究了正庚烷中三(戊烷-2，4-二钠)钴[Co(Acac)_3]与氯酚、二氯苯酚、三氯苯酚和五氯苯酚的缔合作用。由分配平衡确定了与氯代酚(HA)的缔合络合物为Co(Acac)3·HA和Co(Acac)3·2ha，并测定了缔合常数。核磁共振氢谱表明，酚类化合物的氢质子与Co(Acac)3之间存在氢键。讨论了苯酚的缔合常数与酸解离常数之间的关系。
Association of tris(pentane-2,4-dionato)cobalt(III) [Co(acac)3] with chlorophenols, dichlorophenols, trichlorophenols and pentachlorophenol in heptane has been studied by the liquid-liquid partition technique in the heptane-0.10 mol dm−3aqueous perchlorate solution system. From the partition equilibrium, the association complexes with the chlorinated phenols(HA) were found to be Co(acaC)3·HA and Co(acac)3·2HA, and the association constants were determined. Existence of the hydrogen bond between the hydroxyl proton of the phenols and Co(acac)3was evidenced from the1H NMR measurement. The relationship between the association constant and the acid-dissociation constant of the phenols is discussed.