Grassl, Tobias and Hamberger, Markus and Korber, Nikolaus (2012) Acetylene-ammonia-18-crown-6 (1/2/1). Acta Crystallographica Section E : Structure Reports Online E86 (10), o2933.
|License: Creative Commons Attribution|
PDF - Published Version
The title compound, C2H2·C12H24O6·2NH3, was formed by co-crystallization of 18-crown-6 and acetylene in liquid ammonia. The 18-crown-6 molecule has threefold rotoinversion symmetry. The acteylene molecule lies on the threefold axis and the whole molecule is generated by an inversion center. The two ammonia molecules are also located on the threefold axis and are related by inversion symmetry. In the crystal, the ammonia molecules are located below and above the crown ether plane and are connected by intermolecular N-H...O hydrogen bonds. The acetylene molecules are additionally linked by weak C-H...N interactions into chains that propagate in the direction of the crystallographic c axis. The 18-crown-6 molecule [occupancy ratio 0.830 (4):0.170 (4)] is disordered and was refined using a split model.
|Date:||15 September 2012|
|Institutions:||Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Nikolaus Korber|
|Projects:||Open Access Publizieren (DFG)|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||23 Oct 2012 06:38|
|Last Modified:||19 Mar 2013 13:34|