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Chiral Homobimetallic Palladium(II) Complexes Composed of Chirality-Organized Quinonediimines Bearing Amino Acid Moieties

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Abstract

The chirality-organized quinonediimine derivatives bearing amino acid moieties were demonstrated to react with 2 molar equiv. of Pd(OAc)2, resulting in the formation of the chiral homobimetallic palladium(II) complexes. The crystal structures of the chiral conjugated complexes revealed the coordination of the quinonediimine nitrogen to a palladium center and a chiral propeller twist conformation of the π-conjugated backbone. The mirror image relationship of the CD signals around the quinonediimine moieties in acetonitrile was observed between l- and d-derivatives, indicating the preservation of the chirality-organized structures even in a solution.

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Notes

  1. See also the Nobel lectures of Heeger et al.[3].

  2. CCDC 888392 (2- L) and CCDC 888393 (2- D) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.

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Acknowledgments

This work was supported by Grant-in-Aids for Science Research on Innovative Areas (Nos. 23111711 and 24108722) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. One of the authors SDO acknowledges a JSPS fellowship for young scientists.

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Authors and Affiliations

  1. Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, 565-0871, Japan

    Satoshi D. Ohmura, Toshiyuki Moriuchi & Toshikazu Hirao

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  1. Satoshi D. Ohmura
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  2. Toshiyuki Moriuchi
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  3. Toshikazu Hirao
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Correspondence to Toshiyuki Moriuchi or Toshikazu Hirao.

Additional information

This paper is dedicated to Prof. Dr. Hiroshi Nishihara for his outstanding contribution to the field of metal-containing polymers.

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Ohmura, S.D., Moriuchi, T. & Hirao, T. Chiral Homobimetallic Palladium(II) Complexes Composed of Chirality-Organized Quinonediimines Bearing Amino Acid Moieties. J Inorg Organomet Polym 23, 251–255 (2013). https://doi.org/10.1007/s10904-012-9733-5

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