LiSb(edta)(H2O): a convenient preserser to LiSbS2 and LiSbO3

Abstract

The synthesis and crystal structure of the edta complex LiSb(edta)(H₂O) are reported (H₄edta = ethylenediaminetetraacetic acid). The compound crystallizes in the monoclinic system. Sb(edta) entities are connected by cyclic [Li(COO)]₂ dimers resulting in parallel layers stacked in the [110] direction. Pyrolysis of this complex under sulfur vapour between 700 and 850 °C leads to the mixed sulfide β-LiSbS₂. Pyrolysis in air above 660 °C allows the preparation of the mixed oxide LiSbO₃.