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Données cristallographiques sur le tétrachromate d'ammonium (NH 4 ) 2 Cr 4 O 13
Author(s) -
Blum D.,
Tran Qui D.
Publication year - 1979
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889879013388
Subject(s) - monoclinic crystal system , crystallography , chemistry , materials science , crystal structure
(NH 4 ) 2 Cr 4 O 13 is monoclinic ( P 2 1 / c , isotypic with K 2 Cr 4 O 13 and Rb 2 Cr 4 O 13 , with a = 17.82 (1), b = 7.658 (4), c = 9.360 (3) Å, β = 92.00 (1)° , V = 1276 Å 3 , Z = 4 and D x = 2.35 Mg/m 3 .