Accessing magnetic chalcogenides with solvothermal synthesis: KFeS2 and KFe2S3

We report the solvothermal synthesis of the alkali–transition metal sulfides KFeS2 and KFe2S3. The latter compound is not accessible by direct solid-state synthesis. Magnetic susceptibility measurements indicate antiferromagnetic ordering of KFeS2 and KFe2S3, which contain single and double chains of FeS4 tetrahedra, respectively. Given the ability to access KFe2S3 here, further development of this method may lead to isolation of new functional compounds. Graphical abstract Highlights Formation of KFeS2 and KFe2S3 in ethylenediamine proceeds via complex intermediates. fx1

Source: Journal of Solid State Chemistry - January 31, 2018 Category: Chemistry Source Type: research