English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The cavitand 5,11,17,23-tetra-methyl-4,24:6,10:12,16:18,22-tetra-kis-(methyl-enedi-oxy)resorcin[4]arene functionalized at the upper rim with a carb-oxy-lic acid group, CavCOOH-in , of chemical formula C 37 H 32 O 10 , was synthesized in order to study its supra-molecular inter-actions with acetic acid in the solid state. Crystals suitable for X-ray diffraction analysis were obtained by slow evaporation of a di-chloro-methane-acetone solution of CavCOOH-in , to which glacial acetic acid had been added. The resulting compound, C 37 H 32 O 10 ·2C 2 H 4 O 2 ( 1 ) crystallizes in the space group P and its asymmetric unit consists of one mol-ecule of cavitand and two mol-ecules of acetic acid, one of which is encapsulated inside the aromatic cavity and disordered over two positions with a refined occupancy ratio of 0.344 (4):0.656 (4). The guest inter-acts with the host primarily through its methyl group, which (in both orientations) forms C-H⋯π inter-actions with the benzene rings of the cavitand. The crystal structure of 1 is dominated by O-H⋯O and C-H⋯O hydrogen bonding due to the presence of acetic acid and of the carb-oxy-lic group functionalizing the upper rim. Further stabilization is provided by offset π-π stacking inter-actions between the aromatic walls of adjacent cavitands [inter-centroid distance = 3.573 (1) Å].

Host–guest supramolecular interactions between a resorcinarene-based cavitand bearing a –COOH moiety and acetic acid