Données cristallographiques sur le dichromate de cuivre dihydraté CuCr2O7.2H2O

Blum, D.

doi:10.1107/s0021889879013352

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1980

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“…Introduction. Le dichromate de cuivre(II) dihydrat6, CuCr207.2H20, a 6t6 d6crit par plusieurs auteurs (Droege, 1857;Schulze, 1895;Gr6ger, 1910). A notre connaissance, aucune 6tude cristallographique de ce sel n'a cependant 6t6 entreprise jusqu'~ pr6sent.…”

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Structure du dichromate de cuivre(II) dihydrate

Blum¹,

Guitel²

1980

Acta Crystallogr Sect B

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Abstract. CuCr2OT.2H20, monoclinic, P21/n, a = 13.27 (3), b = 7-614 (3), c = 7.445 (3) A, fl= 105.77 (5) °, D x = 2.94 Mg m -a, Z = 4. The crystal structure has been solved using 3305 independent reflexions. The final R value for the 2533 highest-intensity reflexions is 0.023. CuO 6 octahedra (two O atoms from water molecules, and four from four different Cr20 2-anions) ensure the cohesion of the structure.

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“…A notre connaissance, aucune 6tude cristallographique de ce sel n'a cependant 6t6 entreprise jusqu'~ pr6sent. La pr6paration chimique et les donn6es cristallographiques relatives ~ ce compos6 font l'objet d'une autre publication (Blum, 1979).…”

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