Abstract
The first crystal structure of a potassium cation complex with dicyclohexano-18-crown-6 is reported. The potassium 2-nitrophenoxide complex ofsyn-cis-syn dicyclohexano-18-crown-6 crystallizes in the triclinic space group P\(\bar 1\) with cell constantsa=8.604(2),b=10.772(4),C=16.123(5)Å, α=73.86(3)°,β=77.61(3)°, γ=82.68(3)° andZ=2 forD c =1.31 g cm−3. Least-squares refinement based on 2742 observed reflections led to a final conventionalR value of 0.040. Dicyclohexano-18-crown-6 has the shape of a saddle with the potassium cation sitting at the saddlepoint. The structure of the 2-nitrophenoxide anion is dominanted by the quinoid resonance contributor. Because the complex is devoid of significant intercomplex interactions, it is a prototypical 1:1:1 complex.
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Supplementary Data relating to this article are deposited with the British Library as Supplementary Publication No. SUP 82043 (26 pages).
Now Mrs. K. M. Balo.
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Fronczek, F.R., Gandour, R.D., Gehrig, L.M.B. et al. Crystal structure of dicyclohexano-18-crown-6 potassium 2-nitrophenoxide. Journal of Inclusion Phenomena 5, 379–383 (1987). https://doi.org/10.1007/BF00665371
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DOI: https://doi.org/10.1007/BF00665371