Een reis zonder wederkeer. Opmerkelijke notities in handschrift Oxford, Bodleian Library, Can. Misc. 278

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Pyridine Directed Assembly of Di-<i>O</i>-Alkyl-tris-<i>p</i>-Carboxylatocalix[4]arenes

Crystallization of four di-<i>O</i>-alkyl-tris-<i>p</i>-carboxylatocalix­[4]­arenes from a series of pyridine derivatives has been carried out to investigate the effect of introducing alkyl groups around the pyridine guest/template. Where single crystals were obtained, for 12 of 24 possible structures, in all but one case the calixarenes assemble with the pyridine derivative into hydrogen-bonded head-to-head dimers within extended bilayer or nanotubular arrays

Pyridine Directed Assembly of Di-<i>O</i>-Alkyl-tris-<i>p</i>-Carboxylatocalix[4]arenes

Crystallization of four di-<i>O</i>-alkyl-tris-<i>p</i>-carboxylatocalix­[4]­arenes from a series of pyridine derivatives has been carried out to investigate the effect of introducing alkyl groups around the pyridine guest/template. Where single crystals were obtained, for 12 of 24 possible structures, in all but one case the calixarenes assemble with the pyridine derivative into hydrogen-bonded head-to-head dimers within extended bilayer or nanotubular arrays

Introducing Defects into Metal-Seamed Nanocapsules Using Mixed Macrocycles

The synthesis and single-crystal X-ray diffraction structure of a dimeric zinc-seamed nanocapsule using a mixed pyrogallol/resorcinol[4]­arene are presented. The use of “mixed” macrocycles results in an incomplete seam of coordination bonds around the nanocapsule’s typically octa-metalated belt. The self-assembly of the nanocapsule occurs such that the single resorcinol moiety of each macrocycle aligns transversely. This yields a hepta-metalated capsule where the defect occurs in such a way as to provide minimal disruption to the overall structure of the nanocapsule

Introducing Defects into Metal-Seamed Nanocapsules Using Mixed Macrocycles

The synthesis and single-crystal X-ray diffraction structure of a dimeric zinc-seamed nanocapsule using a mixed pyrogallol/resorcinol[4]­arene are presented. The use of “mixed” macrocycles results in an incomplete seam of coordination bonds around the nanocapsule’s typically octa-metalated belt. The self-assembly of the nanocapsule occurs such that the single resorcinol moiety of each macrocycle aligns transversely. This yields a hepta-metalated capsule where the defect occurs in such a way as to provide minimal disruption to the overall structure of the nanocapsule