Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4)
The crystal structure of vanthoffite {hexasodium magnesium tetrakis[sulfate(VI)]}, Na(6)Mg(SO(4))(4), was solved in the year 1964 on a synthetic sample [Fischer & Hellner (1964 ▸). Acta Cryst. 17, 1613]. Here we report a redetermination of its crystal structure on a mineral sample with improv...
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ftpubmed:oai:pubmedcentral.nih.gov:7274003 2023-05-15T16:50:34+02:00 Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) Balić-Žunić, Tonči Pamato, Martha G. Nestola, Fabrizio 2020-05-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274003/ http://www.ncbi.nlm.nih.gov/pubmed/32523739 https://doi.org/10.1107/S2056989020005873 en eng International Union of Crystallography http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274003/ http://www.ncbi.nlm.nih.gov/pubmed/32523739 http://dx.doi.org/10.1107/S2056989020005873 © Balić-Žunić et al. 2020 http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/4.0/ CC-BY Acta Crystallogr E Crystallogr Commun Research Communications Text 2020 ftpubmed https://doi.org/10.1107/S2056989020005873 2020-06-14T00:36:46Z The crystal structure of vanthoffite {hexasodium magnesium tetrakis[sulfate(VI)]}, Na(6)Mg(SO(4))(4), was solved in the year 1964 on a synthetic sample [Fischer & Hellner (1964 ▸). Acta Cryst. 17, 1613]. Here we report a redetermination of its crystal structure on a mineral sample with improved precision. It was refined in the space group P2(1)/c from a crystal originating from Surtsey, Iceland. The unique Mg (site symmetry [Image: see text]) and the two S atoms are in usual, only slightly distorted octahedral and tetrahedral coordinations, respectively. The three independent Na atoms are in a distorted octahedral coordination (1×) and distorted 7-coordinations intermediate between a ‘split octahedron’ and a pentagonal bipyramid (2×). [MgO(6)] coordination polyhedra interchange with one half of the sulfate tetrahedra in <011> chains forming a (100) meshed layer, with dimers formed by edge-sharing [NaO(7)] polyhedra filling the interchain spaces. The other [NaO(7)] polyhedra are organized in a parallel layer formed by [010] and [001] chains united through edge sharing and bonds to the remaining half of sulfate groups and to [NaO(6)] octahedra. The two types of layers interconnect through tight bonding, which explains the lack of morphological characteristics typical of layered structures. Text Iceland Surtsey PubMed Central (PMC) Surtsey ENVELOPE(-20.608,-20.608,63.301,63.301) Acta Crystallographica Section E Crystallographic Communications 76 6 785 789 |
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Research Communications Balić-Žunić, Tonči Pamato, Martha G. Nestola, Fabrizio Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) |
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Research Communications |
description |
The crystal structure of vanthoffite {hexasodium magnesium tetrakis[sulfate(VI)]}, Na(6)Mg(SO(4))(4), was solved in the year 1964 on a synthetic sample [Fischer & Hellner (1964 ▸). Acta Cryst. 17, 1613]. Here we report a redetermination of its crystal structure on a mineral sample with improved precision. It was refined in the space group P2(1)/c from a crystal originating from Surtsey, Iceland. The unique Mg (site symmetry [Image: see text]) and the two S atoms are in usual, only slightly distorted octahedral and tetrahedral coordinations, respectively. The three independent Na atoms are in a distorted octahedral coordination (1×) and distorted 7-coordinations intermediate between a ‘split octahedron’ and a pentagonal bipyramid (2×). [MgO(6)] coordination polyhedra interchange with one half of the sulfate tetrahedra in <011> chains forming a (100) meshed layer, with dimers formed by edge-sharing [NaO(7)] polyhedra filling the interchain spaces. The other [NaO(7)] polyhedra are organized in a parallel layer formed by [010] and [001] chains united through edge sharing and bonds to the remaining half of sulfate groups and to [NaO(6)] octahedra. The two types of layers interconnect through tight bonding, which explains the lack of morphological characteristics typical of layered structures. |
format |
Text |
author |
Balić-Žunić, Tonči Pamato, Martha G. Nestola, Fabrizio |
author_facet |
Balić-Žunić, Tonči Pamato, Martha G. Nestola, Fabrizio |
author_sort |
Balić-Žunić, Tonči |
title |
Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) |
title_short |
Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) |
title_full |
Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) |
title_fullStr |
Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) |
title_full_unstemmed |
Redetermination and new description of the crystal structure of vanthoffite, Na(6)Mg(SO(4))(4) |
title_sort |
redetermination and new description of the crystal structure of vanthoffite, na(6)mg(so(4))(4) |
publisher |
International Union of Crystallography |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274003/ http://www.ncbi.nlm.nih.gov/pubmed/32523739 https://doi.org/10.1107/S2056989020005873 |
long_lat |
ENVELOPE(-20.608,-20.608,63.301,63.301) |
geographic |
Surtsey |
geographic_facet |
Surtsey |
genre |
Iceland Surtsey |
genre_facet |
Iceland Surtsey |
op_source |
Acta Crystallogr E Crystallogr Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274003/ http://www.ncbi.nlm.nih.gov/pubmed/32523739 http://dx.doi.org/10.1107/S2056989020005873 |
op_rights |
© Balić-Žunić et al. 2020 http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
op_doi |
https://doi.org/10.1107/S2056989020005873 |
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Acta Crystallographica Section E Crystallographic Communications |
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76 |
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6 |
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785 |
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789 |
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