Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data

The title salt, C4H6N3O+·C4H3O4−·C4H5N3O, has been redetermined from the data published by Benali-Cherif, Falek & Direm [Acta Cryst. (2009), E65, o3058–o3059]. The improvement of the present redetermination consists in the discovery of the splitting of one of the H atoms into two disordered posi...

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Main Author: Jan Fábry
Format: Article
Language:English
Published: International Union of Crystallography 2016-04-01
Series:Acta Crystallographica Section E: Crystallographic Communications
Subjects:
Online Access:http://scripts.iucr.org/cgi-bin/paper?S2056989016003923
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author Jan Fábry
author_facet Jan Fábry
author_sort Jan Fábry
collection DOAJ
description The title salt, C4H6N3O+·C4H3O4−·C4H5N3O, has been redetermined from the data published by Benali-Cherif, Falek & Direm [Acta Cryst. (2009), E65, o3058–o3059]. The improvement of the present redetermination consists in the discovery of the splitting of one of the H atoms into two disordered positions, the occupancies of which are equal to 0.55 (2) and 0.45 (2). These H atoms are involved in an N...N hydrogen bond and are shifted towards its centre. The disorder of these H atoms is in agreement with a similar environment of the two independent, but chemically equivalent, cytosinium/cytosine molecules.
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spelling doaj.art-2c28b670cc684a7b99a8739a1b6794e82022-12-22T04:09:33ZengInternational Union of CrystallographyActa Crystallographica Section E: Crystallographic Communications2056-98902016-04-0172450951110.1107/S2056989016003923su5280Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original dataJan Fábry0Inst. of Physics of the Czech Academy of Sciences, Na Slovance 2, 182 21 Praha 8, Czech RepublicThe title salt, C4H6N3O+·C4H3O4−·C4H5N3O, has been redetermined from the data published by Benali-Cherif, Falek & Direm [Acta Cryst. (2009), E65, o3058–o3059]. The improvement of the present redetermination consists in the discovery of the splitting of one of the H atoms into two disordered positions, the occupancies of which are equal to 0.55 (2) and 0.45 (2). These H atoms are involved in an N...N hydrogen bond and are shifted towards its centre. The disorder of these H atoms is in agreement with a similar environment of the two independent, but chemically equivalent, cytosinium/cytosine molecules.http://scripts.iucr.org/cgi-bin/paper?S2056989016003923crystal structureredeterminationhydrogen bondingrefinement constraintsrefinement restraintsCambridge Structural Database
spellingShingle Jan Fábry
Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data
Acta Crystallographica Section E: Crystallographic Communications
crystal structure
redetermination
hydrogen bonding
refinement constraints
refinement restraints
Cambridge Structural Database
title Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data
title_full Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data
title_fullStr Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data
title_full_unstemmed Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data
title_short Redetermination of cytosinium hydrogen maleate–cytosine (1/1) from the original data
title_sort redetermination of cytosinium hydrogen maleate cytosine 1 1 from the original data
topic crystal structure
redetermination
hydrogen bonding
refinement constraints
refinement restraints
Cambridge Structural Database
url http://scripts.iucr.org/cgi-bin/paper?S2056989016003923
work_keys_str_mv AT janfabry redeterminationofcytosiniumhydrogenmaleatecytosine11fromtheoriginaldata