Self-Discriminating Self-Assembly of Dinuclear Heterochiral Rhombs from Tröger’s Base Derived Bis(pyridyl) Ligands
作者:Torsten Weilandt、Ulf Kiehne、Jens Bunzen、Gregor Schnakenburg、Arne Lützen
DOI:10.1002/chem.200902993
日期:2010.2.22
Five racemic dissymmetric bis(pyridyl) ligands based on 2,8‐ or 3,9‐difunctionalised Tröger’s base derivatives have been synthesised. Only those derived from a 2,8‐difunctionalised scaffold were found to undergo selective self‐assembly to discrete self‐assembled dinuclear metallosupramolecular aggregates of rhomboid shape upon coordination to cis‐protected Pd2+ or Pt2+ ions, as evidenced by ESI mass
合成了基于2,8-或3,9-双官能化的Tröger碱衍生物的五个外消旋不对称双(吡啶基)配体。ESI质量证明,只有那些由2,8-双官能化支架衍生的化合物在与顺式保护的Pd 2+或Pt 2+离子配位后,会发生选择性的自组装,形成离散的自组装的菱形菱形双核金属超分子聚集体。光谱,NMR光谱和单晶X射线衍射。有趣的是,这些过程被发现具有高度非对映选择性,从而以自甄别的方式形成了C 2 v对称的异手性组装体。