Gold and Silver in the Vapor of Phosphorus

Hautefeuille, P.; Perrey, A.

doi:10.1038/scientificamerican08231884-7199bsupp

Cited by 5 publications

(7 citation statements)

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“…P4010 und dem molekularen Phosphor(III)-oxid P40~ (Maxwell, Hendricks & Deming, 1937;Hampson & Stosick, 1938) noch von einem Phosphoroxid unbekannten Molekulargewichtes mit der empirischen Formel POe berichtet (Hautefeuille & Perrey, 1884;Thorpe & Tutton, 1886, 1890West, 1902;Emmet & Schultz, 1939). Heinz (1963) wies vor kurzem nach, dass dieses Oxid Phosphor der Oxydationsstufen III und V enthiilt und dass das Phosphor-Sauerstoff-Verhi~ltnis in dieser Verbindung variieren kann.…”

Section: Augemeinesunclassified

Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P₄O₉–P₄O₈)

Jost¹

1964

Acta Cryst

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The phosphorus oxides with compositions between P409 and P40 s form a series of mixed crystals of the two molecules P409 and P4Os. The space group is R3c with unit-cell dimensions a = 10.05 A and a = 57.0 °. The 4 P atoms of the molecule are located at the corners of a trigonal pyramid and linked by 6 O on the edges; the remaining two or three O atoms are terminal oxygen atom.~ with respect to P.

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Section: Augemeinesunclassified

Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P₄O₉–P₄O₈)

Jost¹

1964

Acta Cryst

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“…Synthetic emerald crystals have always been of considerable interest for gemstones and other applications. The first successful synthesis of emerald crystals was reported by Hautefeuille and Perrey in 1888 [1,2]. They grew emerald crystals from Li2Mo207 and LiVO3 fluxes [1,2].…”

Section: Introductionmentioning

confidence: 98%

“…The first successful synthesis of emerald crystals was reported by Hautefeuille and Perrey in 1888 [1,2]. They grew emerald crystals from Li2Mo207 and LiVO3 fluxes [1,2]. Because enherald melts incongruently [3], the crystals have been mainly grown by the flux and hydrothermal methods.…”

Section: Introductionmentioning

confidence: 98%

Growth of emerald crystals from PbO · V2O5 flux

Oishi

Hiráo

1991

J Mater Sci

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The flux growth of emerald crystals by slow cooling in the PbO-V205 flux is reported. The crystals exhibited the typical emerald-green colour, were up to 1.8 mm in size and transparent. Their form was a regular hexagonal rod bounded by the well-developed {0001} and {1 010} faces. The solubility of emerald in PbO" V205 was also investigated; about 9.0 g emerald was dissolved in 1 O0 g PbO 9 V205 at 1200 ~ The solubility decreased gradually with decreasing temperature. Taking the solubility data into account, the presence of undissolved particles in the solution was found to be a necessary condition for the growth of large emerald crystals. Unsaturated solution at a soak temperature produced good and relatively small emerald crystals in a subsequent cooling experiment. Advantages of the PbO'V205 flux are also mentioned. Emerald crystals showing various kinds of imperfections, and even good crystals, were also present.

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“…Long time ago, Hautefeuille and Perrey, starting from a stoichiometric oxide mixture and using a flux method, were successful in synthesizing the first emerald single crystals (emerald is a colored variety of the mineral beryl ‐ nominally A l 2 B e 3 ( S i 6 O 18 ))‐ where the typical green color is due to trace amounts of Cr in the structure, substituting for Al at the octahedral sites) . The syntheses were done using the ‘flux method’, whereby a stoichiometric mixture of Be, Al, and Si oxides, doped with Cr, was kept at 800°C for 15days in a Pt crucible, with LiMo 4 to decrease the melting temperature of the system.…”

Section: Introductionmentioning

confidence: 99%

X‐Ray micro‐Computed Tomography and micro X‐ray Fluorescence mapping of synthetic emerald by using a laboratory polycapillary optics X‐ray tube layout

et al. 2015

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This paper relates the X-ray micro-Computed Tomography and micro X-ray Fluorescence 2D mapping of a\ud synthetic emerald performed by a conventional X-ray source matched with polycapillary optics. The investigated\ud crystals were synthesized in 1888 by Hautefeuille and Perrey starting from a stochiometric oxide mixture and using\ud LiMoO4 as a flux; Cr was added to the system to give the green-color to the resulting crystals. Preliminary scanning\ud electron microscope-backscattered electron images, coupled with wavelength-dispersive spectrometry microanalyses,\ud showed a peculiar ‘hourglass’ distribution of Cr across the beryl crystals. In this contribution, we show the\ud capability of a laboratory polycapillary lenses/X-ray tubes layout to characterize at the micrometric scale; the 3D spatial\ud distribution of Cr in these emerald crystals. Actually, this technique offers many opportunities to characterize natural and\ud technological materials where zoning of particular chemical elements occur at the micron or sub-micron scale

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Gold and Silver in the Vapor of Phosphorus

Cited by 5 publications

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Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P₄O₉–P₄O₈)

Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P₄O₉–P₄O₈)

Growth of emerald crystals from PbO · V2O5 flux

X‐Ray micro‐Computed Tomography and micro X‐ray Fluorescence mapping of synthetic emerald by using a laboratory polycapillary optics X‐ray tube layout

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Gold and Silver in the Vapor of Phosphorus

Cited by 5 publications

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Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P4O9–P4O8)

Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P4O9–P4O8)

Growth of emerald crystals from PbO · V2O5 flux

X‐Ray micro‐Computed Tomography and micro X‐ray Fluorescence mapping of synthetic emerald by using a laboratory polycapillary optics X‐ray tube layout

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Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P₄O₉–P₄O₈)

Struktur eines Phosphor(III, V)-Oxides aus der Mischkristallreihe (P₄O₉–P₄O₈)