Serveur d'exploration sur le cobalt au Maghreb

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Dicobalt copper bis­[orthophosphate(V)] monohydrate, Co2.39Cu0.61(PO4)2·H2O

Identifieur interne : 000569 ( Main/Exploration ); précédent : 000568; suivant : 000570

Dicobalt copper bis­[orthophosphate(V)] monohydrate, Co2.39Cu0.61(PO4)2·H2O

Auteurs : Abderrazzak Assani [Maroc] ; Mohamed Saadi [Maroc] ; Lahcen El Ammari [Maroc]

Source :

RBID : PMC:2979060

Abstract

In an attempt to hydro­thermally synthesize a phase with composition Co2Cu(PO4)2·H2O, we obtained the title compound, Co2.39Cu0.61(PO4)2·H2O instead. Chemical analysis confirmed the presence of copper in the crystal. The crystal structure of the title compound can be described as a three- dimensional network constructed from the stacking of two types of layers extending parallel to (010). These layers are made up from more or less deformed polyhedra: CoO6 octa­hedra, (Cu/Co)O5 square pyramids and PO4 tetra­hedra. The first layer is formed by pairs of edge-sharing (Cu/Co)O5 square pyramids linked via a common edge of each end of the (Cu/Co)2O8 dimer to PO4 tetra­hedra. The second layer is undulating and is built up from edge-sharing CoO6 octa­hedra. The linkage between the two layers is accomplished by PO4 tetra­hedra. The presence of water mol­ecules in the CoO4(H2O)2 octa­hedron also contributes to the cohesion of the layers through O—H⋯O hydrogen bonding.


Url:
DOI: 10.1107/S1600536810015382
PubMed: 21578990
PubMed Central: 2979060


Affiliations:


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<sub>2.39</sub>
Cu
<sub>0.61</sub>
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<sub>2</sub>
·H
<sub>2</sub>
O</title>
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<sub>2.39</sub>
Cu
<sub>0.61</sub>
(PO
<sub>4</sub>
)
<sub>2</sub>
·H
<sub>2</sub>
O</title>
<author>
<name sortKey="Assani, Abderrazzak" sort="Assani, Abderrazzak" uniqKey="Assani A" first="Abderrazzak" last="Assani">Abderrazzak Assani</name>
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<nlm:aff id="a">Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat,
<country>Morocco</country>
</nlm:aff>
<country xml:lang="fr">Maroc</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
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<name sortKey="Saadi, Mohamed" sort="Saadi, Mohamed" uniqKey="Saadi M" first="Mohamed" last="Saadi">Mohamed Saadi</name>
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<nlm:aff id="a">Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat,
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<name sortKey="El Ammari, Lahcen" sort="El Ammari, Lahcen" uniqKey="El Ammari L" first="Lahcen" last="El Ammari">Lahcen El Ammari</name>
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<nlm:aff id="a">Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat,
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<p>In an attempt to hydro­thermally synthesize a phase with composition Co
<sub>2</sub>
Cu(PO
<sub>4</sub>
)
<sub>2</sub>
·H
<sub>2</sub>
O, we obtained the title compound, Co
<sub>2.39</sub>
Cu
<sub>0.61</sub>
(PO
<sub>4</sub>
)
<sub>2</sub>
·H
<sub>2</sub>
O instead. Chemical analysis confirmed the presence of copper in the crystal. The crystal structure of the title compound can be described as a three- dimensional network constructed from the stacking of two types of layers extending parallel to (010). These layers are made up from more or less deformed polyhedra: CoO
<sub>6</sub>
octa­hedra, (Cu/Co)O
<sub>5</sub>
square pyramids and PO
<sub>4</sub>
tetra­hedra. The first layer is formed by pairs of edge-sharing (Cu/Co)O
<sub>5</sub>
square pyramids linked
<italic>via</italic>
a common edge of each end of the (Cu/Co)
<sub>2</sub>
O
<sub>8</sub>
dimer to PO
<sub>4</sub>
tetra­hedra. The second layer is undulating and is built up from edge-sharing CoO
<sub>6</sub>
octa­hedra. The linkage between the two layers is accomplished by PO
<sub>4</sub>
tetra­hedra. The presence of water mol­ecules in the CoO
<sub>4</sub>
(H
<sub>2</sub>
O)
<sub>2</sub>
octa­hedron also contributes to the cohesion of the layers through O—H⋯O hydrogen bonding.</p>
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