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 mol­ecule of the title compound {systematic name: 17,35-bis­[(2-propyn-1-yl­oxy)meth­yl]-2,5,8,11,14,20,23,26,29,32-deca­oxatricyclo­[31.3.1.1 15,19 ]octa­triaconta-1(37),15,17,19 (38),33,35-hex­a­­ene}, C 36 H 48 O 12 , has crystallographic inversion symmetry and adopts a chair-like conformation. The polyether bridges of the macrocycle adopt  gauche  conformations and the cavity of the macrocycle is collapsed. In the crystal structure, there are weak inter­molecular C—H⋯O hydrogen bonds driven in part by the elevated acidity of acetylenyl H atoms.

Bis{5-[(2-propyn-1-yloxy)methyl]-1,3-phenylene}-32-crown-10