Publication
Article Metrics
Citations
Online attention
Hydrogen bond system and vibrational spectroscopy of the iron sulfate fibroferrite, Fe(OH)SO4.5H2O
DOI:
10.1127/ejm/2016/0028-2571
Authors:
Gennaro
Ventruti
(Università di Bari)
,
Giancarlo
Della Ventura
(Università di Roma Tre)
,
Fabio
Bellatreccia
(Università di Roma Tre)
,
Maria
Lacalamita
(Università di Bari)
,
Emanuela
Schingaro
(Università di Bari)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
European Journal Of Mineralogy
, VOL 28
, PAGES 943 - 952
State:
Published (Approved)
Published:
December 2016
Diamond Proposal Number(s):
14031
Abstract: The crystal structure of fibroferrite, Fe(OH)SO4.5H2O, was studied by means of single-crystal X-ray diffraction and vibrational (FTIR and Raman) spectroscopies. The new diffraction data allowed to successfully locate eleven H positions and to completely define the H bond system that ensures the cohesion of the Fe-O-S chains in the fibroferrite structure. Infrared and Raman spectra are presented for the first time for this compound and commented on the basis of the crystal structure and literature data for sulfate minerals. Both FTIR and Raman spectra show, in the fundamental water stretching region, a very broad absorption extending from 3600 to 2600 cm−1; peaks at 3522, 3411 and 3140 cm−1 can be resolved in the Raman pattern. The bands present in the low-wavenumber (<1300 cm−1) region are assigned on the basis of the literature data for similar substances, and the observed multiplicity is in agreement with a symmetry reduction of the sulfate ion in the structure of fibroferrite.
Journal Keywords: fibroferrite; iron sulfate; crystal-structure; hydrogen bond system; FTIR; Raman
Subject Areas:
Earth Science,
Chemistry
Instruments:
B22-Multimode InfraRed imaging And Microspectroscopy
Discipline Tags:
Technical Tags: