3,6-Diazaoctane-1,8-diaminium diiodide
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Date
Authors
Cukrowski, Ignacy
Adeyinka, Adedapo S.
Liles, David C.
Journal Title
Journal ISSN
Volume Title
Publisher
International Union of Crystallography
Abstract
The asymmetric unit of the title salt, C6H20N4
2+ 2I , comprises
half a 3,6-diazaoctane-1,8-diaminium dication plus an I
anion. The dications are symmetrical and lie across crystallographic
centres of inversion. In the crystal, the ions form a
network involving mainly weak N—H I intermolecular
interactions: two H atoms of the ammonium group form
interactions with two I anions and the H atom of the
secondary amine forms a weak interaction with a third I
cation. The third ammonium H atom is hydrogen bonded to a
secondary amine of an adjacent cation. The backbone of the
cation does not form a uniformly trans chain, but is ‘kinked’
[C—N—C—C torsion angle = 71.5 (2) ], probably to accommodate
the direct hydrogen bond between the ammonium
group and the secondary amine in an adjacent cation.
Description
Supplementary data and figures for this paper are available from the
IUCr electronic archives (Reference: JJ2132).
Keywords
Single-crystal X-ray study, T = 180 K, Mean (C–C) = 0.002 A, R factor = 0.023, wR factor = 0.053, Data-to-parameter ratio = 39.3
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Citation
Cukrowski, I, Adeyinka, AS & Liles, DC 2012, '3,6-Diazaoctane-1,8-diaminium diiodide', Acta Crystallographica Section E-Structure Reports Online, vol. E68, no. o2387, pp. sup-1-5.