Voltammetric study of the transfer of fluoride ion at the nitrobenzene | water interface assisted by tetraphenylantimony
Voltammetric study of the transfer of fluoride ion at the nitrobenzene | water interface assisted by tetraphenylantimony
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DOI：
10.2116/analsci.20.553
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发表时间：
2004-03-01
影响因子：
1.6
通讯作者：
Tatsumi, H
中科院分区：
文献类型：
--
作者：
Katano, H;Murayama, Y;Tatsumi, H
用离子转移伏安法研究了有机金属络合物四苯基锑(TPhSb+)辅助F-离子通过极化的硝基苯水(Nb I W)界面的转移。当四苯基四(4-氯苯基)硼酸锑和氟离子分别存在于Nb和W中时，在Nb-I-W界面的电位窗口内观察到一个明确的伏安波。伏安图可以解释为F-离子通过与Nb中的Sb原子配位形成TPhSbF络合物，从而促进F-离子的可逆转移。测定了TPhSbF在Nb中的形式生成常数为10(10.95+/-0.2)M-1。在电势窗口内没有观察到TPhSb+辅助转移其他阴离子，如Cl-、Br2-、I-、NO3、CH3COO-和H2PO4离子的伏安波。
The transfer of F- ion assisted by an organometallic complex cation tetraphenylantimony (TPhSb+) across the polarized nitrobenzene I water (NB I W) interface has been studied by means of ion-transfer voltammetry. A well-defined voltammetric wave was observed within the potential window at the NB I W interface when tetraphenylantimony tetrakis(4-chlorophenyl) borate and F- ion were present in NB and W, respectively. The voltammogram can be interpreted as being due to the reversible transfer of F- ion assisted by the formation of the TPhSbF complex through the coordination of F- to Sb atom in NB. The formal formation constant of TPhSbF in NB has been determined to be 10(10.95+/-0.2) M-1. No voltammetric wave due to the TPhSb+-assisted transfer of other anions such as Cl-, Br-, I-, NO3, CH3COO- and H2PO4 ions has been observed within the potential window.