Fine-tuning of packing architecture: symmetrically bridge-disubstituted tetramethoxycalix[4]arenes

Fischer, Conrad and Bombicz, Petra and Seichter, Wilhelm and Weber, Edwin (2013) Fine-tuning of packing architecture: symmetrically bridge-disubstituted tetramethoxycalix[4]arenes. STRUCTURAL CHEMISTRY, 24 (2). pp. 535-541. ISSN 1040-0400

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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 spacial demand of the bridge substituents only. This results in the synthetically implemented finetuning 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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