Identification of Titanium Oxides by X-Ray Powder Patterns.

Andersson, Sten; Collén, Bengt; Kruuse, Georg; Kuylenstierna, Ulf; Magnéli, Arne; Pestmalis, Herbert; Åsbrink, Stig

doi:10.3891/acta.chem.scand.11-1653

Cited by 114 publications

(35 citation statements)

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“…It is noticed that the octahedron edge corresponding to the shortest Ti-Ti contact (2.61 _~) is rather long (3.14 _~). In molybdenum dioxide (Magn61i, 1948) and vanadium dioxide (Andersson, 1956) a similar elongation of edges shared by metal-oxygen octahedra has been observed to be associated with the occurrence of close metalmetal contacts. Fig.…”

Section: Description and Discussion Of The Low-tiso S Structurementioning

confidence: 87%

“…(Hambling, 1953 With a cell content of 12 formula units of TiOl.eT(4Ti305), this gives a calculated density of 4.245 in good agreement with the observed value of 4.20. The powder pattern has been published in a previous report (Andersson et al, 1957a).…”

Section: Derivation Of the Low-ti30 S Structurementioning

confidence: 99%

“…The qualitative relation between metal-metal distance and number of valence electrons available per close metal-metal contact evidently seems to be valid also in this oxide. The shortest Ti-Ti distance (2-61 /~) may be compared with the short V-V distance of 2.65 A in vanadium dioxide which also corresponds to two excess valency electrons (Andersson, 1956;Magndli & Andersson, 1955).…”

Section: Description and Discussion Of The Low-tiso S Structurementioning

confidence: 99%

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Crystal structure studies on trititanium pentoxide, Ti₃O₅

Åsbrink¹,

Magnéli²

1959

Acta Cryst

178

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Trititanium pentoxide (Tia05) is dimorphic--a rapid, reversible phase transformation occurring at about 120 °C. The high-temperature modification is of the anosovite type (slightly deformed pseudobrookite structure). It can be stabilized at room temperature by small contents of iron.The crystal structure of the low-temperature form has been determined. It is monoclinic, space group C2/m, with a cell content of 4 Ti305 and the unit-cell dimensions a = 9.752, b = 3.802, c----9"442A; fl-----91.55 ° .It may be described in terms of Tie 6 octahedra which are joined by sharing edges and corners to form an infinite three-dimensional framework. The structure is discussed and compared with the anosovite structure.

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Section: Description and Discussion Of The Low-tiso S Structurementioning

confidence: 87%

Section: Derivation Of the Low-ti30 S Structurementioning

confidence: 99%

Section: Description and Discussion Of The Low-tiso S Structurementioning

confidence: 99%

See 1 more Smart Citation

Crystal structure studies on trititanium pentoxide, Ti₃O₅

Åsbrink¹,

Magnéli²

1959

Acta Cryst

178

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“…Titanium binary oxides with unfilled 3d orbitals, such as Ti O (TiO ) and the homologous series Ti L O L\ (TiO \L ; n54), are known to undergo phase transitions of crystal structures, electron transport, or magnetic properties (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). Among these compounds, Ti O has been studied intensively to clarify interesting aspects of strong electron-phonon coupling systems.…”

Section: Introductionmentioning

confidence: 99%

Phase Transitions of Ti3O5

Onoda

1998

Journal of Solid State Chemistry

106

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“…Os difratogramas obtidos foram comparados com padrões de ilmenita, anatásio e rutilo. 38 Para as análises por fluorescência de raios-x (FRX) alíquotas de 200 μL de soluções-padrão de Fe e Ti (0,1-1,0 g L -1 ) foram pipetadas em papel de filtro (φ = 25 mm), secos sob lâmpada de infravermelho, fixadas no centro de um filme de PVC adesivo (φ = 45 mm), e cobertos por filme de poliéster, permitindo assim a construção das curvas de calibração. A varredura das amostras e padrões foi feita em aparelho Rigaku modelo B3, com detector de LiF e tubo de Ag.…”

Section: Métodos Analíticosunclassified