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New crystal data for ferroelastic isopropyl ammonium chloroplatinate and chlorostannate (IPACP and IPACS)
Author(s) -
Bhalla A. S.,
Cross L. E.
Publication year - 1974
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/s0021889874009629
Subject(s) - orthorhombic crystal system , monoclinic crystal system , crystal twinning , isopropyl , crystallography , materials science , powder diffraction , ammonium , second harmonic generation , crystal structure , chemistry , optics , physics , organic chemistry , microstructure , laser
Two new ferroelastic compounds, isopropyl ammonium chloroplatinate (C 3 H 7 NH 3 ) 2 PtCl 6 and isopropyl ammonium chlorostannate (C 3 H 7 NH 3 ) 2 SnCl 6 , studied at room temperature (23°C) with Laue, Weissenberg, powder X‐ray diffraction and optical second‐harmonic generation (SHG) techniques have probable space group P 2 1 / c ( Bbcm above 37°C and 40°C respectively). The crystals are so strongly pseudo‐orthorhombic ( Bbcm ) with prevalent twinning that the monoclinic character is not apparent in the X‐ray powder pattern. Lattice parameters for the pseudo‐orthorhombic cells are a = 11.589 (1), b = 19.024 (3), c = 7.237 (3) Å, for IPACP and a = 11.851 (7), b = 19.05 (1) and c = 7.227 (4) Å for IPACS.