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 - Článek v odborném periodiku
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
Grant CEP: GA ČR GA17-09161S
Institucionální podpora: RVO:68378271
Klíčová slova: parabutlerite * ferric sulfate hydrate * modulated structure * commensurate
Obor OECD: Geology
Impakt faktor: 6.467, rok: 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.

Trvalý link: http://hdl.handle.net/11104/0275715