A commensurately modulated structure of parabutlerite, Fe.sup.III./sup.SO.sub.4./sub.(OH).2H.sub.2./sub.O

0479707 - FZÚ 2018 RIV GB eng J - Journal Article
Plášil, Jakub - Petříček, Václav - Majzlan, J.
A commensurately modulated structure of parabutlerite, Fe^IIISO₄(OH).2H₂O.
Acta Crystallographica Section B-Structural Science Crystal Engineering and Materials. Roč. 73, May (2017), s. 1-7. E-ISSN 2052-5206
R&D Projects: GA ČR GA17-09161S
Institutional support: RVO:68378271
Keywords : parabutlerite * ferric sulfate hydrate * modulated structure * commensurate
OECD category: Geology
Impact factor: 6.467, year: 2017

Parabutlerite, orthorhombic FeIIISO4(OH).2H2O , has been reinvestigated using single-crystal X-ray diffraction. The structure of parabutlerite is commensurately modulated. The structure consists of infinite chains of Fe octahedra that are linked via vertices (OH groups) these chains are encased from both sides by SO4 tetrahedra. Thedisplacive modulation of atoms in parabutlerite is connected with a tilt of the chains around the b axis towards the adjacent chains due to the accommodation of an energetically more favorable hydrogen-bond geometry.

Permanent Link: http://hdl.handle.net/11104/0275715