Metal Complexes with Oligo(Salen)‐Type Ligands
作者： Shigehisa Akine
DOI: 10.1002/9780470682531.PAT0909
关键词:
摘要: Various kinds of metal complexes having oligo(salen)-type ligands have been designed, synthesized, and characterized. Convergent arrangement two or more metallosalen units contributes to the programmed formation multi-metal structures. The oligo(salen) compounds are classified into three types: macrocyclic, acyclic (helical), cage-like systems. In macrocyclic systems, metalation salen moieties significantly enhances guest ion binding in cavity. This enables controlled synthesis homo- heterometallic cluster-like makes ligand molecules adopt a helical conformation. These structures provided new site, at which ions recognized based on exchange protocol. dynamic feature is utilized for stimuli-responsive systems that can change helicity upon with chemical species. Metal obtained from three-dimensional cavity suitable size-selective recognition. cooperative by taking advantage convergent discussed this chapter will be useful achieve sophisticated responsive functions, intrinsic properties structural conversions multimetallic core complexes. Keywords: salen; host-guest chemistry; ion recognition; metallohost; macrocycle; helical structure; helicity control; molecular cage; cooperative effect; template
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