Počet záznamů: 1

2,2´-(1,3-Diazinane-1,3-diyl)diacetonitrile: a second monoclinic polymorph

  1. 1.
    0365917 - FZU-D 2012 RIV DK eng J - Článek v odborném periodiku
    Rivera, A. - Maldonado, M. - Ríos-Motta, J. - Fejfarová, Karla - Dušek, Michal
    2,2´-(1,3-Diazinane-1,3-diyl)diacetonitrile: a second monoclinic polymorph.
    Acta Crystallographica section E - Structure Reports Online. Roč. 67, Part 10 (2011), o2734/sup6 ISSN 1600-5368
    Grant ostatní:AV ČR(CZ) AP0701
    Program:Akademická prémie - Praemium Academiae
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: crystal structure * X-ray diffraction
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 0.347, rok: 2011

    A new monoclinic polymorph of the title compound, C8H12N4, in the space group P21/n is reported. The previously known form was also monoclinic, P21/c, but the unit cell parameters and crystal packing were different [Shoja & Saba (1993). Acta Cryst. C49, 354–355]. The hexahydropyrimidine ring of the title compound adopts a chair conformation with a diequatorial substitution and with the CH2-CN groups oriented nearly parallel and in the same direction [NC-CH2...CH2-CN pseudo torsion angle = 6.27 (18)°]. In the crystal, intermolecular C-H... N hydrogen bonds connects the molecules into a chain along the b axis.
    Trvalý link: http://hdl.handle.net/11104/0201048