Self-Assembly Process of Dodecanuclear Pt(II)-Linked Cyclic Hexagon

The self-assembly process of a Pt­(II)-linked hexagonal macrocycle consisting of six linear dinuclear Pt­(II) units and six organic ditopic bent ligands was investigated. The process was monitored by 1H NMR, and the intermediates in the self-assembly were analyzed by the n–k analysis. It was found t...

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Published inJournal of the American Chemical Society Vol. 137; no. 24; pp. 7664 - 7667
Main Authors Baba, Ayako, Kojima, Tatsuo, Hiraoka, Shuichi
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 24.06.2015
Subjects
Cyclization
Ligands
Macrocyclic Compounds - chemistry
Models, Molecular
Organoplatinum Compounds - chemistry
Proton Magnetic Resonance Spectroscopy
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Summary:The self-assembly process of a Pt­(II)-linked hexagonal macrocycle consisting of six linear dinuclear Pt­(II) units and six organic ditopic bent ligands was investigated. The process was monitored by 1H NMR, and the intermediates in the self-assembly were analyzed by the n–k analysis. It was found that a 1:2 complex of a dinuclear Pt­(II) unit and an organic ditopic ligand was exclusively observed as an intermediate with a certain lifetime and that the reaction of the 1:2 complex is the rate-determining step in the supramolecular macrocycle formation. The key 1:2 complex was unambiguously characterized by 1H and DOSY NMR and ESI-TOF mass measurement.
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ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.5b04852