Metal Chelation Aptitudes of Bis(<i>o</i>-azaheteroaryl)methanes As Tuned by Heterocycle Charge Demands<sup>1</sup>
作者:Alessandro Abbotto、Silvia Bradamante、Antonio Facchetti、Giorgio A. Pagani
DOI:10.1021/jo025696o
日期:2002.8.1
benzimidazole, pyridine, and quinoline derivatives. Depending on the structure and electron properties of the ligand, a vast set of neutral chelates ML(2) were obtained, where the ligand is present in its carbanionic form L(-). Additionally, we have prepared salt complexes [M(LH)(n)]X(m), where the ligand is present as a neutral system. Neutral chelates were typically obtained by the reaction of the ligand with
我们描述了许多1,3,azol-2-yl-,1,3-benzazol-2-yl-和基于azinyl的双(o-azazeteroarylaryl)甲烷的合成(LH,L(-)= Het (2)CH(-))及其对二价过渡金属(Zn,Cu,Co,Ni,Hg,Pd)的配位性能。这项广泛的研究包括基于几种取代和/或未取代的噻唑,苯并噻唑,苯并恶唑,苯并咪唑,吡啶和喹啉衍生物的对称和不对称配体。根据配体的结构和电子性质,获得了大量中性螯合物ML(2),其中配体以其碳负离子形式L(-)存在。此外,我们还制备了盐配合物[M(LH)(n)] X(m),其中配体以中性系统存在。中性螯合物通常是通过配体与金属乙酸盐在酒精溶液中的反应获得的。盐配合物是通过与其他金属盐(如氯化物)反应而形成的。通过基于可变的π电子结构和取代模式的杂芳族化合物探索几种二杂芳基甲烷配体的配位性质,我们证明中性螯合物的形成严格取决于杂芳族