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Figure 3
Projection of the 150 K approximate structure of [(CH[_{3}])[_{4}]N](ClO[_{4}]) along the [c] axis, analysed as tetragonal, with space group [P\overline{4}2_{1}m]. The slanted dashed lines show mirror planes that would force the O3 atoms to remain in this plane if the structure exactly matched this model. The horizontal dashed lines represent the mirror planes at [y = {1 \over 4}] and [3 \over 4] of the other possible pseudosymmetry, Pbma.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 59| Part 5| September 2003| Pages 625-633
doi:10.1107/S0108768103019013
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