Identification of hydrolysis products of FeCl3.6H2O by ESI-MS.
The hydrolysis reactions of FeCl3 in 0.1 mM aqueous solutions were monitored by electrospray ionisation time-of-flight mass spectrometry (ESI-ToF-MS). In contrast to the other ionisation techniques, electrospray ionisation provides information on the composition of the elemental cores even in water and salt cluster ions. Therefore, the technique facilitates detection of the bonding of the chloride ions in the oxo-hydroxo-iron cores. A variety of mononuclear and polynuclear iron-oxohydroxo-chloride complexes were characterised from the cationic and anionic mass spectra of iron(III) solutions. Oxidation and reduction reactions of iron, as well as competition between OH- and Cl- ions within one iron core, were also observed.
Hellman
Heikki
H
Department of Chemistry, University of Oulu, P.O. Box 3000, FIN-90014 University of Oulu, Finland. Heikki.Hellman@oulu.fi
Laitinen
Risto S
RS
Kaila
Leena
L
Jalonen
Jorma
J
Hietapelto
Vesa
V
Jokela
Jukka
J
Sarpola
Arja
A
Rämö
Jaakko
J