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Crystal data and crystal growth of Pb 5 GeO 7
Author(s) -
Otto H. H.
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/s0021889879012310
Subject(s) - orthorhombic crystal system , crystallography , crystallization , lattice constant , crystal (programming language) , crystal growth , crystal structure , chemistry , lattice (music) , space group , materials science , x ray crystallography , diffraction , physics , optics , organic chemistry , programming language , computer science , acoustics
Transparent and light brownish single crystals of Pb 5 GeO 7 were grown from a melt of composition 4.8PbO.GeO 2 by spontaneous crystallization. The compound melts incongruently at 1014 K. The unit cell is orthorhombic with lattice constants a = 9.296 (2), b = 11.546 (2), c = 17.298 (5) Å; D m (293 K) = 8.63 (4), D x = 8.734 Mg m −3 for Z = 8. The space group is Pbca . Indexed X‐ray powder data are given.