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Self-sorting of multicomponent Pt(II) metallacages

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Abstract

Using a social self-sorting phenomenon, two Pt(II)←pyridyl, carboxylate heteroleptic metallacages cage 1 and cage 2 have been constructed in nearly quantitative yields from a single reaction that contained twenty-eight communicative precursors, including five unique species 3–7 in a 2:4:16:2:4 molar ratio. The success of this reaction has been established by multinuclear NMR (31P and 1H), UV/Vis absorption and fluorescence emission spectroscopies. The process depends on various factors such as the energetic preference for Pt←N,O coordination over the Pt←N,N and Pt←O,O coordination motifs, the appropriate selection of stoichiometry and directionality of the precursors, as well as maximum site occupancy while keeping entropic costs as low as possible.

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Acknowledgments

P.J.S. thanks NSF (Grant 1212799) for financial support.

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The authors declare no competing financial interest.

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Authors and Affiliations

  1. Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, UT, 84112, USA

    Mingming Zhang, Manik Lal Saha & Peter J. Stang

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  1. Mingming Zhang
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  2. Manik Lal Saha
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  3. Peter J. Stang
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Corresponding authors

Correspondence to Mingming Zhang, Manik Lal Saha or Peter J. Stang.

Additional information

Dedicated to Professor George A. Olah on the occasion of his 90th birthday.

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Zhang, M., Saha, M.L. & Stang, P.J. Self-sorting of multicomponent Pt(II) metallacages. Struct Chem 28, 453–459 (2017). https://doi.org/10.1007/s11224-016-0859-x

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