Chiral molecular motion system is of continued interest due to potential application in nano-scaled dynamic molecular architecture. Metal complexes particularly offer a promising strategy for developing the structurally and functionally defined supramolecules due to their characteristic coordination geometry, redox activities and other unique properties [1]. We have demonstrated that kinetically labile Co(II) complex with a chiral tetradentate ligand exhibited dynamic helicity inversion from left-handed helical structure to right-handed one upon achiral nitrate anion [2]. We applied this helicity induction and inversion motion to regulate helical direction of peptide chains [3] and to elastic molecular motion [4]. I will describe the recent examples of chiral metal complexes exhibiting several molecular motions triggered by achiral external stimuli.Ref. H. Miyake et al. [1] Chem. Soc. Rev., 2012 , 41, 6977. [2] J. Am. Chem. Soc., 2004 , 126, 6524. [3] J. Am. Chem. Soc., 2008 , 130, 792. [4] Chem. Eur. J., 2008 , 14, 5393.

Stimuli-responsive molecular motion in optically active metal complexes

246th National Meeting (2013)

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