Ferrous tungstate

Ferrous tungstate
Names
IUPAC names
  • Iron(2+) dioxido(dioxo)tungsten [ACD/IUPAC Name]
  • Tungsten, diolatodioxo-, iron(2+) salt (1:1) [ACD/Index Name]
Other names
Iron(II) tungstate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.188
  • InChI=1S/Fe.4O.W/q+2;;;2*-1;
    Key: SSWAPIFTNSBXIS-UHFFFAOYSA-N
  • [O-][W](=O)(=O)[O-].[Fe+2]
Properties
FeWO4, sometimes expressed FeO4W
Molar mass 303.68 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ferrous tungstate (FeWO4) is an inorganic compound, a tungstate of ferrous iron. It occurs naturally as ferberite.[1]

Synthesis

It can be synthesized from iron(III) chloride and sodium tungstate under hydrothermal conditions where the presence of L-cysteine reduces Fe3+ to Fe2+.[2]

FeWO4 crystals can be prepared by hydrothermal synthesis. Reagents used in this process are ethylenediaminetetraacetic acid disodium salt (Na2EDTA) and hexamethylenetetramine (HMT). Na2EDTA helps in controlling the morphology of FeWO4 crystals by binding to metal ions and preventing their premature precipitation and HMT acts as a pH buffer and a source of ammonia.[3]

References

  1. ↑ "Ferberite". 13 March 2014.
  2. ↑ Zhang, Jian; Zhang, Yan; Yan, Jing-Yi; Li, Shi-Kuo; Wang, Hai-Sheng; Huang, Fang-Zhi; Shen, Yu-Hua; Xie, An-Jian (2012). "A novel synthesis of star-like FeWO4 nanocrystals via a biomolecule-assisted route". Springer. 14 (4). doi:10.1007/s11051-012-0796-6.
  3. ↑ Zhang, Jian; Wang, Yang; Li, Shikuo; Wang, Xiufang; Huang, Fangzhi; Xie, Anjian; Shen, Yuhua (2011). "Controlled synthesis, growth mechanism and optical properties of FeWO4 hierarchical microstructures". CrystEngComm. 13 (19): 5744. doi:10.1039/C1CE05416C.
This page is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.