Reconstructive phase transition in (NH4)3TiF7 accompanied by the ordering of TiF6 octahedra

Molokeev, M.; Misjul, S.V.; Flerov, I.N.; Laptash, N.M.

doi:10.1107/S2052520614021192

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 2
The structure of the formula unit in the compounds: (a) (NH₄)₃PbF₇; (b) (NH₄)₃GeF₇; (c) (NH₄)₃TiF₇ at room temperature; (d) (NH₄)₃TiF₇ low-temperature cubic phase. The small squares with arrows mark some fourfold axes.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 70| Part 6| November 2014| Pages 924-931

doi:10.1107/S2052520614021192

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