Antimonate (original) (raw)
In chemistry an antimonate is a compound which contains a metallic element, oxygen, and antimony in an oxidation state of +5. These compounds adopt polymeric structures with M-O-Sb linkages. They can be considered to be derivatives of the hypothetical antimonic acid H3SbO4, or combinations of metal oxides and antimony pentoxide, Sb2O5. Some examples of antimonates and their structures are shown below:
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| dbo:abstract | In chemistry an antimonate is a compound which contains a metallic element, oxygen, and antimony in an oxidation state of +5. These compounds adopt polymeric structures with M-O-Sb linkages. They can be considered to be derivatives of the hypothetical antimonic acid H3SbO4, or combinations of metal oxides and antimony pentoxide, Sb2O5. Historically these compounds were assumed to be analogous to the phosphates and formulas such as LiSbO3·3H2O and Na2H2Sb2O7·5H2O were used and the compounds described as hydrated meta-antimonates and pyro-antimonates. LiSbO3·3H2O is now known to be LiSb(OH)6 and contain the Sb(OH)−6 anion and that Na2H2Sb2O7·5H2O is actually NaSb(OH)6. Some examples of antimonates and their structures are shown below: * Li3SbO4 has a NaCl superstructure with isolated Sb4O12−16 units. * Sodium antimonate, NaSbO3, has the ilmenite structure, with hexagonal close packed oxide ions with each ion, Na+ and Sb5+ occupying a third of the octahedral sites. * MgSb2O6 has the trirutile structure, which is similar to the rutile structure except that there are two different cations in the lattice. * AlSbO4 has the rutile structure with random occupancy. * Lead antimonate, Pb2Sb2O7, Naples yellow, has the pyrochlore structure. * Calcium antimonate, Ca2Sb2O7, has the structure. * Ferric ortho-antimonate, Fe2O3·Sb2O5 or FeSbO4, has the rutile structure with random occupancy. (en) En chimie, un antimoniate est un composé qui contient un élément métallique, de l'oxygène et de l'antimoine dans un état d'oxydation de +5. Ces composés forment des structures polymériques avec des liens M-O-Sb. Ils peuvent être considérés comme des dérivés de l'hypothétique H3SbO4, ou des combinaisons d'oxydes métalliques et de , Sb2O5. Historiquement, ces composés étaient supposés être analogues aux phosphates et des formules telles que LiSbO3·3H2O et Na2H2Sb2O7·5H2O étaient utilisées, ces composés étant décrits comme des méta-antimoniates et des pyro-antimoniates hydratés. LiSbO3·3H2O est maintenant défini par la formule LiSb(OH)6 et contient l'anion Sb(OH)6− et le composé Na2H2Sb2O7·5H2O est en fait NaSb(OH)6. Quelques exemples d'antimoniates et leurs structures cristallines sont indiqués ci-dessous : * Li3SbO4 a une structure NaCl avec des unités Sb4O1612− isolées. * L', NaSbO3, a la structure ilménite, avec des ions oxyde hexagonal compact, chacun des deux ions, Na+ et Sb5+, occupant un tiers des sites octaédriques. * MgSb2O6 a la structure trirutile, qui est similaire à la structure rutile, sauf qu'il y a deux cations différents dans la maille. * AlSbO4 a la structure rutile avec une occupation aléatoire des sites. * L'antimoniate de plomb, Pb2Sb2O7, le jaune de Naples, a la structure pyrochlore. * L'antimoniate de calcium, Ca2Sb2O7, a la structure . * L'ortho-antimoniate ferrique, Fe2O3·Sb2O5 ou , a la structure rutile avec une occupation aléatoire des sites. (fr) |
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| dbo:wikiPageWikiLink | dbr:Pyrochlore dbr:Antimonate_mineral dbr:Antimonide dbr:Antimonite dbr:Antimony dbc:Antimony(V)_compounds dbc:Oxometallates dbc:Oxyanions dbr:Antimony_pentoxide dbr:Titanium_dioxide dbr:Oxidation_state dbr:Oxygen dbr:Sodium_chloride dbr:Metal_oxide dbr:Metallic_element dbr:Ilmenite dbr:Naples_yellow dbr:Antimonic_acid dbr:Iron_antimonate dbr:Weberite |
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| gold:hypernym | dbr:Compound |
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| rdfs:comment | In chemistry an antimonate is a compound which contains a metallic element, oxygen, and antimony in an oxidation state of +5. These compounds adopt polymeric structures with M-O-Sb linkages. They can be considered to be derivatives of the hypothetical antimonic acid H3SbO4, or combinations of metal oxides and antimony pentoxide, Sb2O5. Some examples of antimonates and their structures are shown below: (en) En chimie, un antimoniate est un composé qui contient un élément métallique, de l'oxygène et de l'antimoine dans un état d'oxydation de +5. Ces composés forment des structures polymériques avec des liens M-O-Sb. Ils peuvent être considérés comme des dérivés de l'hypothétique H3SbO4, ou des combinaisons d'oxydes métalliques et de , Sb2O5. Quelques exemples d'antimoniates et leurs structures cristallines sont indiqués ci-dessous : (fr) |
| rdfs:label | Antimonate (en) Antimoniate (fr) |
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| prov:wasDerivedFrom | wikipedia-en:Antimonate?oldid=1093240867&ns=0 |
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| is gold:hypernym of | dbr:Naples_yellow |
| is foaf:primaryTopic of | wikipedia-en:Antimonate |