Structure of some FeII − III hydroxysalt green rusts (carbonate, oxalate, methanoate) from Mössbauer spectroscopy

Abstract

The abundances of Fe II and Fe III environments within green rusts one, GR1s, that intercalate carbonate, oxalate and methanoate (formate) anions are found from Mössbauer spectra for compositions corresponding to [Fe II 6 Fe III 2These formulae correspond to orders α, β and γ where cation distances are (2 × a 0 ), ( √ 3 × a 0 ) or a mixture of both leading to (7 × a 0 ), where ratio x = {[Fe III ]/[Fe total ]} = 1/4, 1/3 and 2/7, respectively. Anion distributions within interlayers are also devised and long-range orders determined accordingly.