Summary.
The influence of the terminal substituents of 2,2′-bidipyrrin ligands on the geometrical and spectroscopic properties of the respective nickel(II) complexes was investigated. Helicity was found to be an intrinsic structural feature of all 2,2′-bidipyrrins studied to date, including a species with minimum helical overlap. Surprisingly, no changes became apparent upon increasing the size of the terminal substituent from methyl to 1,4-butadiyl. t-Butyl groups at the termini, however, were found to be sterically too demanding to allow the formation of stable nickel(II) complexes.
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Received October 5, 2001. Accepted (revised) November 14, 2001
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Bröring, M., Brandt, C. Tuning the Helicity of (2,2′-Bidipyrrinato)-nickel(II) Complexes. Monatshefte fuer Chemie 133, 623–630 (2002). https://doi.org/10.1007/s007060200034
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DOI: https://doi.org/10.1007/s007060200034