The Crystal Structure and Ionic Conductivity of the Ilmenite Polymorph of NaSbO3

Wang, B.; Chen, S.C.; Greenblatt, Martha

doi:10.1006/jssc.1994.1028

Cited by 29 publications

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“…The SbO octahedra are thus compressed in the direction parallel to the threefold axis. The smallest O}Sb}O angles in NaSbO (2), TlSbO (9), and PbSb O (10) are 79.73, 78.93, and 79.53, respectively. This distortion also helps to accommodate the larger A> cations, which sesparate SbO\ layers.…”

Section: Introductionmentioning

confidence: 97%

“…Staggered chains of edge-sharing SbO octahedra are found in LiSbO (1). The most common polymorph of NaSbO adopts the ilmenite structure, containing sheets of edgesharing SbO octahedra (2). KSbO also crystallizes in the ilmenite structure under typical synthesis conditions (3), but transforms to a cubic phase after prolonged heating (3) or under high pressure (4).…”

Section: Introductionmentioning

confidence: 99%

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Structural Studies and Order–Disorder Phenomenon in a Series of New Quaternary Tellurates of the Type A2+M4+Te6+O6 and A1+2M4+Te6+O6

Woodward

Sleight

et al. 1999

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Structural Studies and Order–Disorder Phenomenon in a Series of New Quaternary Tellurates of the Type A2+M4+Te6+O6 and A1+2M4+Te6+O6

Woodward

Sleight

et al. 1999

Journal of Solid State Chemistry

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“…Unit-cell parameters for brizziite refined using LAPOD (Langford, 1973) were a = 5.294(1), c = 15.949(3) Å, and agree well with those reported by Wang et al . (1994), a = 5.2901, c = 15.9260 Å.…”

Section: Resultsmentioning

confidence: 99%

The stability of the rare sodium antimonate, brizziite, and it's role in Sb mobility

et al. 2018

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Synthesis and solubility studies of brizziite, NaSbO3, have been undertaken to determine the possible role of this rare secondary phase in the immobilization of Sb under supergene conditions and the conditions responsible for its formation in the supergene zone. Solubility studies were undertaken at T = 298.15 K. A value of ΔGfө) (NaSbO3, s, 298.15 K) = –806.66 ± 1.4 kJ mol–1 was derived. Calculations involving tripuhyite, FeSbO4, byströmite, MgSb2O6, ordoñezite, ZnSb2O6 and rosiaite, PbSb2O6, show that brizziite is a thermodynamically stable phase only at negligible activities of Pb2+(aq) at high pH and high salinity. Calculations involving mopungite Na[Sb(OH)6] combined with reported mineral associations suggest that mopungite is the thermodynamically unstable precursor to brizziite and its presence in natural settings must be due to kinetic stability. This explains why brizziite is such a rare secondary phase and therefore why it cannot exert any significant influence on the dispersion of Sb in the supergene environment.

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“…The trigonal structure of CoSb 2 O 6 is based on the distorted hexagonal close packing (better to say, 2H eutaxy) of oxygen anions, where cations fill half octahedral voids. 29 For the primitive one-layered packing, it should be 3.011/3 = 1.004. Although the rutile and trirutile structure types are also often described as 2H derivatives, it is actually incorrect.…”

Section: Structural Characterizationmentioning

confidence: 99%

Preparation and characterization of metastable trigonal layered MSb₂O₆ phases (M = Co, Ni, Cu, Zn, and Mg) and considerations on FeSb₂O₆

et al. 2017

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MSbO compounds (M = Mg, Co, Ni, Cu, Zn) are known in the tetragonal trirutile forms, slightly distorted monoclinically with M = Cu due to the Jahn-Teller effect. In this study, using a low-temperature exchange reaction between ilmenite-type NaSbO and molten MSO-KCl (or MgCl-KCl) mixtures, these five compositions were prepared for the first time as trigonal layered rosiaite (PbSbO)-type phases. Upon heating, they irreversibly transform to the known phases via amorphous intermediates, in contrast to previously studied isostructural MnSbO, where the stable phase is structurally related to the metastable phase. The same method was found to be applicable for preparing stable rosiaite-type CdSbO. The formula volumes of the new phases show an excellent correlation with the ionic radii (except for M = Cu, for which a Jahn-Teller distortion is suspected) and are 2-3% larger than those for the known forms although all coordination numbers are the same. The crystal structure of CoSbO was refined via the Rietveld method: P3[combining macron]1m, a = 5.1318(3) Å, and c = 4.5520(3) Å. Compounds with M = Co and Ni antiferromagnetically order at 11 and 15 K, respectively, whereas the copper compound does not show long-range magnetic order down to 1.5 K. A comparison between the magnetic behavior of the metastable and stable polymorphs was carried out. FeSbO could not be prepared because of the 2Fe + Sb = 2Fe + Sb redox reaction. This electron transfer produces an additional 5s shell for Sb and results in a volume increase. A comparison of the formula volume for the stable mixture FeSbO + 0.5SbO with that extrapolated for FeSbO predicted that the trirutile-type FeSbO can be stabilized at high pressures.

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The Crystal Structure and Ionic Conductivity of the Ilmenite Polymorph of NaSbO3

Cited by 29 publications

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Structural Studies and Order–Disorder Phenomenon in a Series of New Quaternary Tellurates of the Type A2+M4+Te6+O6 and A1+2M4+Te6+O6

Structural Studies and Order–Disorder Phenomenon in a Series of New Quaternary Tellurates of the Type A2+M4+Te6+O6 and A1+2M4+Te6+O6

The stability of the rare sodium antimonate, brizziite, and it's role in Sb mobility

Preparation and characterization of metastable trigonal layered MSb₂O₆ phases (M = Co, Ni, Cu, Zn, and Mg) and considerations on FeSb₂O₆

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The Crystal Structure and Ionic Conductivity of the Ilmenite Polymorph of NaSbO3

Cited by 29 publications

References 0 publications

Structural Studies and Order–Disorder Phenomenon in a Series of New Quaternary Tellurates of the Type A2+M4+Te6+O6 and A1+2M4+Te6+O6

Structural Studies and Order–Disorder Phenomenon in a Series of New Quaternary Tellurates of the Type A2+M4+Te6+O6 and A1+2M4+Te6+O6

The stability of the rare sodium antimonate, brizziite, and it's role in Sb mobility

Preparation and characterization of metastable trigonal layered MSb2O6 phases (M = Co, Ni, Cu, Zn, and Mg) and considerations on FeSb2O6

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Preparation and characterization of metastable trigonal layered MSb₂O₆ phases (M = Co, Ni, Cu, Zn, and Mg) and considerations on FeSb₂O₆