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Synthesis and Structural Characterization of Mercury(II) Coordination Polymers Based on 1,2,4,5-Tetra(Isopropylthio) Benzene Ligand

机译：1,2,4,5-四（异丙硫基）苯配体的汞（II）配位聚合物的合成与结构表征

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摘要

Toxicological effects of mercury and its compounds are well known. Mercury species are introduced into aquatic waters by anthropogenic activities or through bioalkylation of inorganic mercury by metalloenzymes such as methylcobalamin present in microorganisms. In nature, toxic mercury(II) ions are converted into non-toxic Hg(0) by the enzyme catalyzed reactions. Industries use several methods such as coagulation/flocculation, lime softening, and reverse osmosis for the effective removal of mercury ions. However, at the end of all the processes the mercury ions are discarded into landfills, and these methods not addressing the issue at root level. Broader goal of our research is to develop "sacrificial ligand" for conversion of toxic mercury ions into non-toxic HgS. Mercury sulfides are virtually insoluble in water, and least toxic form of mercury.;In this work, we explored the possibility of 1,2,4,5-tetra(isopropylthio)benzene (L1) as a sacrificial ligand for the conversion of toxic mercury ions into HgS. Ligand L1 has four sulfur donors and have a strong affinity for mercury ions. However, to evaluate binding ability of L1, coordination chemistry with various mercury(II) salts has been investigated. Ligand L1 forms one-dimensional coordination polymers [{L1}HgX2]infinity (2 , X = Cl; 3, X = Br) with HgCl2 and HgBr 2 respectively. Whereas L1 reacts with two equivalent of HgI2 to produce dinuclear mercury complex [I2Hg{ L1}HgI2] (4). The onedimensional coordination polymers complex [Hg{L1}(ClO4-kappaO)]2] infinity (5) and [Hg{L1}(F3CSO 3-kappaO)]2]infinity (6) have been isolated from the reaction of L1 with Hg(ClO4) 2 and Hg(OTf)2 salts, respectively. The present study concludes that L1 has affinity for various inorganic mercury(II) salts, however, it does not coordinate with CH3HgI.
机译：汞及其化合物的毒理学作用是众所周知的。通过人类活动或通过微生物中存在的金属酶（例如甲基钴胺素）使无机汞生物烷基化，将汞物种引入了水域。在自然界中，有毒的汞（II）离子通过酶催化反应转化为无毒的Hg（0）。工业界使用多种方法（例如凝结/絮凝，石灰软化和反渗透）来有效去除汞离子。但是，在所有过程的最后，汞离子被丢弃到垃圾填埋场中，而这些方法并没有从根本上解决这一问题。我们研究的更广泛目标是开发“牺牲配体”，以将有毒的汞离子转化为无毒的HgS。硫化汞实际上不溶于水，并且是毒性最低的汞。;在这项工作中，我们探讨了1,2,4,5-四（异丙硫基）苯（L1）作为有毒物质转化的牺牲配体的可能性汞离子转化为硫化汞。配体L1具有四个硫供体，并且对汞离子具有很强的亲和力。但是，为了评估L1的结合能力，已经研究了与各种汞（II）盐的配位化学。配体L1分别与HgCl2和HgBr 2形成一维配位聚合物[{L1} HgX2]无穷大（2，X = Cl; 3，X = Br）。 L1与两当量的HgI2反应生成双核汞络合物[I2Hg {L1} HgI2]（4）。一维配位聚合物络合物[Hg {L1}（ClO4-kappaO）] 2无穷大（5）和[Hg {L1}（F3CSO 3-kappaO）] 2]无穷大（6）已从L1与Hg（ClO4）2和Hg（OTf）2盐。本研究得出的结论是，L1对各种无机汞（II）盐具有亲和力，但它与CH3HgI不协调。

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  • 作者

    Selby-Karney, Troy.;

  • 作者单位

    Lamar University - Beaumont.;

  • 授予单位 Lamar University - Beaumont.;
  • 学科 Inorganic chemistry.
  • 学位 M.S.
  • 年度 2018
  • 页码 77 p.
  • 总页数 77
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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