Preparation, crystal structures and rapid hydration of P2- and P3-type sodium chromium antimony oxides

Two new Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2 compounds have been prepared by solid-state reactions in argon. Their structures have been determined by the X-ray Rietveld method. Both new phases together with NaCrO 2-based solid solution comprise brucite-like layers of edge-shared (Cr,Sb)O 6 octahedra b...

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Veröffentlicht in:	Journal of solid state chemistry 2011-05, Vol.184 (5), p.1043-1047
Hauptverfasser:	Pospelov, A.A., Nalbandyan, V.B.
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Sprache:	eng
Schlagworte:	ALKALI METAL COMPOUNDS Antimonate ANTIMONY COMPOUNDS ANTIMONY OXIDES ARGON CHALCOGENIDES CHARGED PARTICLES Chromite CHROMITES Chromium CHROMIUM COMPOUNDS CRYSTAL LATTICES CRYSTAL STRUCTURE DISPERSIONS ELECTROLYTES ELECTROMAGNETIC RADIATION ELEMENTS FLUIDS GASES HCP LATTICES HEXAGONAL LATTICES HOMOGENEOUS MIXTURES HYDRATES HYDRATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY IONIZING RADIATIONS IONS Layered structure LAYERS MIXTURES NONMETALS OXIDES OXYGEN COMPOUNDS Phases Prismatic coordination Prisms RADIATIONS RARE GASES Rietveld method Sodium SODIUM COMPOUNDS SODIUM IONS Solid electrolyte SOLID ELECTROLYTES SOLID SOLUTIONS SOLUTIONS SOLVATION TRANSITION ELEMENT COMPOUNDS TRIGONAL LATTICES X RADIATION
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description	Two new Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2 compounds have been prepared by solid-state reactions in argon. Their structures have been determined by the X-ray Rietveld method. Both new phases together with NaCrO 2-based solid solution comprise brucite-like layers of edge-shared (Cr,Sb)O 6 octahedra but differ by packing mode of the layers and coordination of the interlayer Na + ions. A P3 phase exists at x≈0.5–0.58. It is rhombohedral ( R3̄ m), a=2.966, c=16.937 Å at x≈0.58, with 29% Na + occupancy of trigonal prisms. A P2 phase exists at x≈0.6–0.7. It is hexagonal ( P6 3/ mmc), a=2.960, c=11.190 Å at x≈0.7, with 37% and 33% Na + occupancy of two non-equivalent trigonal prisms. Both P2 and P3 phases rapidly absorb moisture in air; packing mode is preserved, the a parameter changes slightly but c increases by 24–25%. Very high sodium ion conductivity is predicted for both P2 and P3 anhydrous phases. Polyhedral presentation of layered structures of Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2· (Cr,Sb)O 6 octahedra are green. Part of the sodium prisms are open to show short distances between sodium sites which cannot be occupied simultaneously. [Display omitted] ► Two new layered Na x [Cr (1+ x)/2 Sb (1 −x)/2 ]O 2 phases, P2 and P3, have been prepared in argon. ► Interlayer O–O distances are larger than in Na x ( M,Ti)O 2 analogs ( M=Cr,Ni,Li). ► As a result, both rapidly hydrate in air with c-axis expansion of 24–25%. ► Bottleneck radii are also larger, and this predicts very high Na +-ion conductivity.
doi_str_mv	10.1016/j.jssc.2011.03.011
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Their structures have been determined by the X-ray Rietveld method. Both new phases together with NaCrO 2-based solid solution comprise brucite-like layers of edge-shared (Cr,Sb)O 6 octahedra but differ by packing mode of the layers and coordination of the interlayer Na + ions. A P3 phase exists at x≈0.5–0.58. It is rhombohedral ( R3̄ m), a=2.966, c=16.937 Å at x≈0.58, with 29% Na + occupancy of trigonal prisms. A P2 phase exists at x≈0.6–0.7. It is hexagonal ( P6 3/ mmc), a=2.960, c=11.190 Å at x≈0.7, with 37% and 33% Na + occupancy of two non-equivalent trigonal prisms. Both P2 and P3 phases rapidly absorb moisture in air; packing mode is preserved, the a parameter changes slightly but c increases by 24–25%. Very high sodium ion conductivity is predicted for both P2 and P3 anhydrous phases. Polyhedral presentation of layered structures of Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2· (Cr,Sb)O 6 octahedra are green. Part of the sodium prisms are open to show short distances between sodium sites which cannot be occupied simultaneously. [Display omitted] ► Two new layered Na x [Cr (1+ x)/2 Sb (1 −x)/2 ]O 2 phases, P2 and P3, have been prepared in argon. ► Interlayer O–O distances are larger than in Na x ( M,Ti)O 2 analogs ( M=Cr,Ni,Li). ► As a result, both rapidly hydrate in air with c-axis expansion of 24–25%. ► Bottleneck radii are also larger, and this predicts very high Na +-ion conductivity.</description><identifier>ISSN: 0022-4596</identifier><identifier>EISSN: 1095-726X</identifier><identifier>DOI: 10.1016/j.jssc.2011.03.011</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>ALKALI METAL COMPOUNDS ; Antimonate ; ANTIMONY COMPOUNDS ; ANTIMONY OXIDES ; ARGON ; CHALCOGENIDES ; CHARGED PARTICLES ; Chromite ; CHROMITES ; Chromium ; CHROMIUM COMPOUNDS ; CRYSTAL LATTICES ; CRYSTAL STRUCTURE ; DISPERSIONS ; ELECTROLYTES ; ELECTROMAGNETIC RADIATION ; ELEMENTS ; FLUIDS ; GASES ; HCP LATTICES ; HEXAGONAL LATTICES ; HOMOGENEOUS MIXTURES ; HYDRATES ; HYDRATION ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; IONIZING RADIATIONS ; IONS ; Layered structure ; LAYERS ; MIXTURES ; NONMETALS ; OXIDES ; OXYGEN COMPOUNDS ; Phases ; Prismatic coordination ; Prisms ; RADIATIONS ; RARE GASES ; Rietveld method ; Sodium ; SODIUM COMPOUNDS ; SODIUM IONS ; Solid electrolyte ; SOLID ELECTROLYTES ; SOLID SOLUTIONS ; SOLUTIONS ; SOLVATION ; TRANSITION ELEMENT COMPOUNDS ; TRIGONAL LATTICES ; X RADIATION</subject><ispartof>Journal of solid state chemistry, 2011-05, Vol.184 (5), p.1043-1047</ispartof><rights>2011 Elsevier Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c360t-8db3c69bb312f1a256613543485d653fde73737bd628c4742c503e7a7f5d76233</citedby><cites>FETCH-LOGICAL-c360t-8db3c69bb312f1a256613543485d653fde73737bd628c4742c503e7a7f5d76233</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jssc.2011.03.011$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/21504070$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Pospelov, A.A.</creatorcontrib><creatorcontrib>Nalbandyan, V.B.</creatorcontrib><title>Preparation, crystal structures and rapid hydration of P2- and P3-type sodium chromium antimony oxides</title><title>Journal of solid state chemistry</title><description>Two new Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2 compounds have been prepared by solid-state reactions in argon. Their structures have been determined by the X-ray Rietveld method. Both new phases together with NaCrO 2-based solid solution comprise brucite-like layers of edge-shared (Cr,Sb)O 6 octahedra but differ by packing mode of the layers and coordination of the interlayer Na + ions. A P3 phase exists at x≈0.5–0.58. It is rhombohedral ( R3̄ m), a=2.966, c=16.937 Å at x≈0.58, with 29% Na + occupancy of trigonal prisms. A P2 phase exists at x≈0.6–0.7. It is hexagonal ( P6 3/ mmc), a=2.960, c=11.190 Å at x≈0.7, with 37% and 33% Na + occupancy of two non-equivalent trigonal prisms. Both P2 and P3 phases rapidly absorb moisture in air; packing mode is preserved, the a parameter changes slightly but c increases by 24–25%. Very high sodium ion conductivity is predicted for both P2 and P3 anhydrous phases. Polyhedral presentation of layered structures of Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2· (Cr,Sb)O 6 octahedra are green. Part of the sodium prisms are open to show short distances between sodium sites which cannot be occupied simultaneously. [Display omitted] ► Two new layered Na x [Cr (1+ x)/2 Sb (1 −x)/2 ]O 2 phases, P2 and P3, have been prepared in argon. ► Interlayer O–O distances are larger than in Na x ( M,Ti)O 2 analogs ( M=Cr,Ni,Li). ► As a result, both rapidly hydrate in air with c-axis expansion of 24–25%. ► Bottleneck radii are also larger, and this predicts very high Na +-ion conductivity.</description><subject>ALKALI METAL COMPOUNDS</subject><subject>Antimonate</subject><subject>ANTIMONY COMPOUNDS</subject><subject>ANTIMONY OXIDES</subject><subject>ARGON</subject><subject>CHALCOGENIDES</subject><subject>CHARGED PARTICLES</subject><subject>Chromite</subject><subject>CHROMITES</subject><subject>Chromium</subject><subject>CHROMIUM COMPOUNDS</subject><subject>CRYSTAL LATTICES</subject><subject>CRYSTAL STRUCTURE</subject><subject>DISPERSIONS</subject><subject>ELECTROLYTES</subject><subject>ELECTROMAGNETIC RADIATION</subject><subject>ELEMENTS</subject><subject>FLUIDS</subject><subject>GASES</subject><subject>HCP LATTICES</subject><subject>HEXAGONAL LATTICES</subject><subject>HOMOGENEOUS MIXTURES</subject><subject>HYDRATES</subject><subject>HYDRATION</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>IONIZING RADIATIONS</subject><subject>IONS</subject><subject>Layered structure</subject><subject>LAYERS</subject><subject>MIXTURES</subject><subject>NONMETALS</subject><subject>OXIDES</subject><subject>OXYGEN COMPOUNDS</subject><subject>Phases</subject><subject>Prismatic coordination</subject><subject>Prisms</subject><subject>RADIATIONS</subject><subject>RARE GASES</subject><subject>Rietveld method</subject><subject>Sodium</subject><subject>SODIUM COMPOUNDS</subject><subject>SODIUM IONS</subject><subject>Solid electrolyte</subject><subject>SOLID ELECTROLYTES</subject><subject>SOLID SOLUTIONS</subject><subject>SOLUTIONS</subject><subject>SOLVATION</subject><subject>TRANSITION ELEMENT COMPOUNDS</subject><subject>TRIGONAL LATTICES</subject><subject>X RADIATION</subject><issn>0022-4596</issn><issn>1095-726X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kE9r3DAQxUVpoNukX6AnQQ651I7-WLIXcikhTQKB7KGB3IRWGrNa1pajkUv97WvHOZc5vIH5vWHmEfKds5Izrq-P5RHRlYJxXjJZzvKJbDjbqqIW-vUz2TAmRFGprf5CviIe2UyoptqQdpdgsMnmEPsf1KUJsz1RzGl0eUyA1PaeJjsETw-TXzkaW7oTxftoJ4s8DUAx-jB21B1S7JbG9jl0sZ9o_Bs84AU5a-0J4duHnpOXX3e_bx-Kp-f7x9ufT4WTmuWi8Xvp9Ha_l1y03AqlNZeqklWjvFay9VDLufZei8ZVdSWcYhJqW7fK11pIeU4u170RczDoQgZ3cLHvwWUjuGIVq9lMXa3UkOLbCJhNF9DB6WR7iCOapmFa6fp9n1hJlyJigtYMKXQ2TYYzsyRvjmZJ3izJGybNLLPpZjXB_OmfAGk5BHoHPqTlDh_D_-z_AIlfjAY</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>Pospelov, A.A.</creator><creator>Nalbandyan, V.B.</creator><general>Elsevier Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20110501</creationdate><title>Preparation, crystal structures and rapid hydration of P2- and P3-type sodium chromium antimony oxides</title><author>Pospelov, A.A. ; Nalbandyan, V.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c360t-8db3c69bb312f1a256613543485d653fde73737bd628c4742c503e7a7f5d76233</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>ALKALI METAL COMPOUNDS</topic><topic>Antimonate</topic><topic>ANTIMONY COMPOUNDS</topic><topic>ANTIMONY OXIDES</topic><topic>ARGON</topic><topic>CHALCOGENIDES</topic><topic>CHARGED PARTICLES</topic><topic>Chromite</topic><topic>CHROMITES</topic><topic>Chromium</topic><topic>CHROMIUM COMPOUNDS</topic><topic>CRYSTAL LATTICES</topic><topic>CRYSTAL STRUCTURE</topic><topic>DISPERSIONS</topic><topic>ELECTROLYTES</topic><topic>ELECTROMAGNETIC RADIATION</topic><topic>ELEMENTS</topic><topic>FLUIDS</topic><topic>GASES</topic><topic>HCP LATTICES</topic><topic>HEXAGONAL LATTICES</topic><topic>HOMOGENEOUS MIXTURES</topic><topic>HYDRATES</topic><topic>HYDRATION</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>IONIZING RADIATIONS</topic><topic>IONS</topic><topic>Layered structure</topic><topic>LAYERS</topic><topic>MIXTURES</topic><topic>NONMETALS</topic><topic>OXIDES</topic><topic>OXYGEN COMPOUNDS</topic><topic>Phases</topic><topic>Prismatic coordination</topic><topic>Prisms</topic><topic>RADIATIONS</topic><topic>RARE GASES</topic><topic>Rietveld method</topic><topic>Sodium</topic><topic>SODIUM COMPOUNDS</topic><topic>SODIUM IONS</topic><topic>Solid electrolyte</topic><topic>SOLID ELECTROLYTES</topic><topic>SOLID SOLUTIONS</topic><topic>SOLUTIONS</topic><topic>SOLVATION</topic><topic>TRANSITION ELEMENT COMPOUNDS</topic><topic>TRIGONAL LATTICES</topic><topic>X RADIATION</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pospelov, A.A.</creatorcontrib><creatorcontrib>Nalbandyan, V.B.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Journal of solid state chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pospelov, A.A.</au><au>Nalbandyan, V.B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation, crystal structures and rapid hydration of P2- and P3-type sodium chromium antimony oxides</atitle><jtitle>Journal of solid state chemistry</jtitle><date>2011-05-01</date><risdate>2011</risdate><volume>184</volume><issue>5</issue><spage>1043</spage><epage>1047</epage><pages>1043-1047</pages><issn>0022-4596</issn><eissn>1095-726X</eissn><abstract>Two new Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2 compounds have been prepared by solid-state reactions in argon. Their structures have been determined by the X-ray Rietveld method. Both new phases together with NaCrO 2-based solid solution comprise brucite-like layers of edge-shared (Cr,Sb)O 6 octahedra but differ by packing mode of the layers and coordination of the interlayer Na + ions. A P3 phase exists at x≈0.5–0.58. It is rhombohedral ( R3̄ m), a=2.966, c=16.937 Å at x≈0.58, with 29% Na + occupancy of trigonal prisms. A P2 phase exists at x≈0.6–0.7. It is hexagonal ( P6 3/ mmc), a=2.960, c=11.190 Å at x≈0.7, with 37% and 33% Na + occupancy of two non-equivalent trigonal prisms. Both P2 and P3 phases rapidly absorb moisture in air; packing mode is preserved, the a parameter changes slightly but c increases by 24–25%. Very high sodium ion conductivity is predicted for both P2 and P3 anhydrous phases. Polyhedral presentation of layered structures of Na x [Cr (1+ x)/2 Sb (1− x)/2 ]O 2· (Cr,Sb)O 6 octahedra are green. Part of the sodium prisms are open to show short distances between sodium sites which cannot be occupied simultaneously. [Display omitted] ► Two new layered Na x [Cr (1+ x)/2 Sb (1 −x)/2 ]O 2 phases, P2 and P3, have been prepared in argon. ► Interlayer O–O distances are larger than in Na x ( M,Ti)O 2 analogs ( M=Cr,Ni,Li). ► As a result, both rapidly hydrate in air with c-axis expansion of 24–25%. ► Bottleneck radii are also larger, and this predicts very high Na +-ion conductivity.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><doi>10.1016/j.jssc.2011.03.011</doi><tpages>5</tpages></addata></record>
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subjects	ALKALI METAL COMPOUNDS Antimonate ANTIMONY COMPOUNDS ANTIMONY OXIDES ARGON CHALCOGENIDES CHARGED PARTICLES Chromite CHROMITES Chromium CHROMIUM COMPOUNDS CRYSTAL LATTICES CRYSTAL STRUCTURE DISPERSIONS ELECTROLYTES ELECTROMAGNETIC RADIATION ELEMENTS FLUIDS GASES HCP LATTICES HEXAGONAL LATTICES HOMOGENEOUS MIXTURES HYDRATES HYDRATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY IONIZING RADIATIONS IONS Layered structure LAYERS MIXTURES NONMETALS OXIDES OXYGEN COMPOUNDS Phases Prismatic coordination Prisms RADIATIONS RARE GASES Rietveld method Sodium SODIUM COMPOUNDS SODIUM IONS Solid electrolyte SOLID ELECTROLYTES SOLID SOLUTIONS SOLUTIONS SOLVATION TRANSITION ELEMENT COMPOUNDS TRIGONAL LATTICES X RADIATION
title	Preparation, crystal structures and rapid hydration of P2- and P3-type sodium chromium antimony oxides
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