Počet záznamů: 1

Hydronium perchlorate-dibenzo-18-crown-6 (1/1): monoclinic polymorph

  1. 1.
    0356196 - FZU-D 2011 RIV DK eng J - Článek v odborném periodiku
    Pojarová, Michaela - Fejfarová, Karla - Makrlík, E.
    Hydronium perchlorate-dibenzo-18-crown-6 (1/1): monoclinic polymorph.
    Acta Crystallographica section E - Structure Reports Online. Roč. 66, Part 12 (2010), o3341-o3342 ISSN 1600-5368
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: crystal structure * Jana2006 * polymorph
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 0.413, rok: 2010

    A new polymorph of dibenzo-18-crown-6 oxonium perchlorate, C20H24O6.(H3O)+.ClO4-, was prepared and characterized. The asymmetric unit contains two molecules of dibenzo-18-crown-6 with complexed oxonium ion inside its cavity. Corresponding perchlorate molecules are hydrogen-bounded to the oxonium ion. Both molecules are present in butterfly conformation with approximate symmetry C2v and their cavities are closed by the phenyl ring of the neighbouring molecule. The arrangement is held by CH-pi inter¬actions between the phenyl rings.
    Trvalý link: http://hdl.handle.net/11104/0194783