Abstract
Three acetonitrile solvates of tetramethoxycalix[4]arenes equally substituted on opposite methylene bridges are described with respect to their conformation and packing behaviour. All of the host molecules adopt a 1,2-alternate conformation, their packing architecture seems to be affected by the spatial demand of the bridge substituents only. This results in the synthetically implemented fine-tuning of the molecular arrangement. The engineering of the relevant packing motif, the “synthon” may be discussed most appropriate by the term “synthon engineering” following the expression of crystal engineering.
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Acknowledgments
C. F. acknowledges Prof. Dr. E. Weber for supervision and Dr. T. Gruber for persistent scientific discussion. P. B. acknowledges the support from the National Scientific Research Foundation (OTKA K-100801).
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Fischer, C., Bombicz, P., Seichter, W. et al. Fine-tuning of packing architecture: symmetrically bridge-disubstituted tetramethoxycalix[4]arenes. Struct Chem 24, 535–541 (2013). https://doi.org/10.1007/s11224-012-0104-1
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DOI: https://doi.org/10.1007/s11224-012-0104-1