Acetylene–ammonia–18-crown-6 (1/2/1)

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...

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Main Authors: Tobias Grassl, Markus Hamberger, Nikolaus Korber
Format: Article
Language:English
Published: International Union of Crystallography 2012-10-01
Series:Acta Crystallographica Section E
Online Access:http://scripts.iucr.org/cgi-bin/paper?S1600536812038792
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author Tobias Grassl
Markus Hamberger
Nikolaus Korber
author_facet Tobias Grassl
Markus Hamberger
Nikolaus Korber
author_sort Tobias Grassl
collection DOAJ
description 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.
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spelling doaj.art-492f1f2f91fc403fa6036a678a7013172022-12-21T19:35:31ZengInternational Union of CrystallographyActa Crystallographica Section E1600-53682012-10-016810o2933o293310.1107/S1600536812038792Acetylene–ammonia–18-crown-6 (1/2/1)Tobias GrasslMarkus HambergerNikolaus KorberThe 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.http://scripts.iucr.org/cgi-bin/paper?S1600536812038792
spellingShingle Tobias Grassl
Markus Hamberger
Nikolaus Korber
Acetylene–ammonia–18-crown-6 (1/2/1)
Acta Crystallographica Section E
title Acetylene–ammonia–18-crown-6 (1/2/1)
title_full Acetylene–ammonia–18-crown-6 (1/2/1)
title_fullStr Acetylene–ammonia–18-crown-6 (1/2/1)
title_full_unstemmed Acetylene–ammonia–18-crown-6 (1/2/1)
title_short Acetylene–ammonia–18-crown-6 (1/2/1)
title_sort acetylene amp 8211 ammonia amp 8211 18 crown 6 1 2 1
url http://scripts.iucr.org/cgi-bin/paper?S1600536812038792
work_keys_str_mv AT tobiasgrassl acetyleneamp8211ammoniaamp821118crown6121
AT markushamberger acetyleneamp8211ammoniaamp821118crown6121
AT nikolauskorber acetyleneamp8211ammoniaamp821118crown6121