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Updated: Jun 12, 2026
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
Published on: October 27, 2018
Structure of pyrrhotite 5C (Fe9S10)
1CSIRO Minerals Down Under Flagship, CSIRO Process Science and Engineering, Parker CRC for Integrated Hydrometallurgy Solutions, PO Box 7229, Karawara, Western Australia 6152, Australia. alexander.elliot@csiro.au
Abstract:
The distribution of vacancies throughout the underlying NiAs structure of pyrrhotite 5C was analysed through the application of vacancy avoidance and the closeness condition in conjunction with order-disorder layering. Two crystallographically equivalent structure solutions (chiral enantiomers) were produced consisting of layers containing one vacancy in every eight iron sites broken by a fully occupied layer every fifth iron layer, and best described by monoclinic statistical models. The statistical 5C structures were verified using synchrotron powder diffraction data as well as published electron-diffraction patterns. An order-disorder structure description is proposed for the intermediate pyrrhotites of which pyrrhotite 5C is an end-member.
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