Lateral <i>cis</i>-1,3,5,7-Tetraazadecalin Podands and their Complexes: Synthesis, Structure, and Strong Binding with Pb(II) and Other Heavy Metal Ions
作者:Ofer Reany、Benzion Fuchs
DOI:10.1021/ic3023166
日期:2013.2.18
probed and showed considerable propensity for heavy metal-ion chelation. The [CdII·(9)] and [PbII·(9)] complexes stood out indeed, and their structure and properties show a particularly interesting 5-amino-1,3-diazane chelation type and strong ligand-ion binding mode, with intramolecular donor exchange in solution, all strongly influenced by the anomeric effect in the ligand.
基于diaminal podands的化学性质和络合行为顺-1,3,5,7-tetraazadecalin(顺式- TAD)进行了阐述,重新评估,和扩展。2,6-双(羟亚甲基)-顺-TAD(9)和2,6-双(α,α'-二甲基-β-羟乙基)-顺-TAD(10)以及适当取代的2的合成布置了6-6-二芳基-顺式-TAD豆荚。对于后者,在探查9和10时检查了给电子或撤出取代基对苯甲醛试剂的影响,并显示出重金属离子螯合的相当大的倾向。[Cd II ·(9)]和[Pb II ·(9)]配合物确实脱颖而出,并且它们的结构和性质显示了一种特别有趣的5-氨基-1,3-二氮烷螯合类型和强配体-离子结合模式,并且在溶液中进行了分子内供体交换,都受到配体中异头作用的强烈影响。