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Hydro-nium perchlorate-dibenzo-18-crown-6 (1/1): monoclinic polymorph.

ABSTRACT: The asymmetric unit of the title compound, H(3)O(+)·ClO(4) (-)·C(20)H(24)O(6), contains two mol-ecules/ions of each species. Both dibenzo-18-crown-6 mol-ecules have a complexed hydro-nium ion inside their cavity with O-H?O and O-H?(O,O) links between the two species. The associated perchlorate anions also accept O-H?O hydrogen bonds from the hydro-nium ion. Both crown ether mol-ecules are present in a butterfly conformation with approximate C(2v) symmetry and their cavities are closed by the benzene ring of a neighbouring mol-ecule. The packing is consolidated by C-H?O and C-H?? inter-actions.

SUBMITTER: Pojarova M

PROVIDER: S-EPMC3011457 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature

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Hydro-nium perchlorate-dibenzo-18-crown-6 (1/1): monoclinic polymorph.

Pojarová Michaela M Fejfarová Karla K Makrlík Emanuel E

Acta crystallographica. Section E, Structure reports online 20101127 Pt 12

The asymmetric unit of the title compound, H(3)O(+)·ClO(4) (-)·C(20)H(24)O(6), contains two mol-ecules/ions of each species. Both dibenzo-18-crown-6 mol-ecules have a complexed hydro-nium ion inside their cavity with O-H⋯O and O-H⋯(O,O) links between the two species. The associated perchlorate anions also accept O-H⋯O hydrogen bonds from the hydro-nium ion. Both crown ether mol-ecules are present in a butterfly conformation with approximate C(2v) symmetry and their cavities are closed by the ben ...[more]

PMID: 21589614

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