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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Anomalous Salting-Out Effect of Sodium Perchlorate on fac-Tris(glycinato)cobalt(III)
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Anomalous Salting-Out Effect of Sodium Perchlorate on fac-Tris(glycinato)cobalt(III)

机译：高氯酸钠对fac-Tris（glycinato）Co（III）的异常盐析作用

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摘要

The effect of NaClO_4 on fac- and mer-isomers of tris(amino acidato)cobalt(III) ([Co(aa)_3]) was examined by determining their solubilities in aqueous NaClO_4 solutions.An addition of NaClO_4 increased the solubilities of both the isomers of [Co(aa)_3] except for tris(glycinato)cobalt(III) ([Co(gly)_3]).While the solubility of mer-[Co(gly)_3] was also increased by the addition of NaClO_4,NaClO_4 brought about abnormally large decrease in the solubility of fac-[Co(gly)_3].The addition of NaClO_4 also produced a decrease in the solubility of tris(acetylacetonato)cobalt(III) ([Co-(acac)_3]).The salting-out effect of NaClO_4 on fac-[Co(gly)_3] was compared with that on [Co(acac)_3].While both the enthalpy (DELTA_(tr)H~o) and entropy of transfer (DELTA_(tr)S~o) from water to aqueous NaClO_4 solutions for [Co(acac)_3] were positive,those for fac-[Co(gly)_3] were generally negative.On the basis of these results,an origin for the salting-out effect of NaClO_4 on fac-[Co(gly)_3] is discussed.
机译：通过确定NaClO_4在NaClO_4水溶液中的溶解度来检查三（氨基酸基）钴（III）（[Co（aa）_3]）的正和异构体的影响。添加NaClO_4可以增加两者的溶解度除了三（氨基乙酸）钴（III）（[Co（gly）_3]）以外，[Co（aa）_3]的异构体。mer-[Co（gly）_3]的溶解度也通过添加NaClO_4，NaClO_4导致fac- [Co（gly）_3]的溶解度异常大幅度降低。NaClO_4的添加也导致三（乙酰丙酮基）钴（III）（[Co-（acac）_3 ]）。比较了NaClO_4对fac- [Co（gly）_3]和[Co（acac）_3]的盐析作用。虽然焓（DELTA_（tr）H〜o）和转移熵[Co（acac）_3]从水到NaClO_4水溶液的（DELTA_（tr）S〜o）为正，而fac- [Co（gly）_3]的水溶液的（DELTA_（tr）S〜o）均为负。讨论了NaClO_4对fac- [Co（gly）_3]的盐析作用。

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