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

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journal contribution
posted on 24.06.2015, 00:00 by Ayako Baba, Tatsuo Kojima, Shuichi Hiraoka
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 nk 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.