The Chelating Behaviour of 3‐(4‐X‐Phenyl)‐2‐sulfanylpropenoic Acids with the Pb
<sup>II</sup>
Ion – Relevance of the Lone Electron Pair in the Supramolecular Structures of the 2:1 Complexes
作者:José S. Casas、M. Victoria Castaño、Maria D. Couce、Agustín Sánchez、José Sordo、M. Dolores Torres、Ezequiel M. Vázquez López
DOI:10.1002/ejic.201300633
日期:2013.10
enoic acids [H2(X-pspa); X = –F, –Cl, –Br, –I, –OCH3, –OCF3, –OH] with lead(II) acetate in an alcoholic medium was explored in the search for new chelating agents for the Pb2+ ion. The direct reactions afforded [Pb(X-pspa)] complexes in yields of 67 (X = –Br) to 95 % (X = –OCH3). When the PbII/H2(X-pspa) reaction was performed in the presence of diisopropylamine (Q), the derivatives [HQ]2[Pb(X-pspa)2]
3-(4-X-苯基)-2-硫烷基丙烯酸[H2(X-pspa); X = –F, –Cl, –Br, –I, –OCH3, –OCF3, –OH] 与醋酸铅 (II) 在酒精介质中的探索是为了寻找新的 Pb2+ 离子螯合剂。直接反应以 67 (X = –Br) 到 95% (X = –OCH3) 的产率提供了 [Pb(X-pspa)] 配合物。当在二异丙胺 (Q) 存在下进行 PbII/H2(X-pspa) 反应时,得到衍生物 [HQ]2[Pb(X-pspa)2] (X = Cl, Br)。所有配合物均通过光谱(FAB-MS 和 ESI-MS)和光谱(IR、1H 和 13C NMR 光谱)方法表征,这些方法表明配体与二甲亚砜中金属离子的 O、S 配位的持久性(DMSO) 溶液。H2(Cl-pspa), [HQ]2[Pb(Cl-pspa)2] 和 [HQ]2[Pb(Br-pspa)2] 也通过