Dimethyl selenide complexes of copper, gallium and indium halides as potential precursors for selenium-containing chalcopyrite semiconducting materials

The coordination chemistry of copper, gallium and indium halides with the simplest possible selenoether i.e. Me2Se was investigated with the aim to use the resulting complexes as precursors for selenium-containing chalcopyrite semiconducting materials. An optimized general procedure for the high yield synthesis is described and the influence of a halide ion on the structure and solubility of these metal halide dimethyl selenide complexes are discussed. These complexes were characterized by the elemental analysis, FT-IR and 1H NMR spectroscopy as well as single crystal X-ray structures, the later study showing them to be monomeric for gallium halides, mono- or dimeric for indium halides and either an ion-pairs or 2-D extended structure in the case of copper halides.

Graphical abstractIn order to obtain suitable precursors for the selenium-containing chalcopyrite materials, reactions of Cu(I) and Cu(II), Ga(III) and In(III) halides with Me2Se were investigated and the complexes obtained were characterized by the elemental analysis, FT-IR and NMR spectroscopy and single crystal X-ray diffraction studies.Figure optionsDownload full-size imageDownload as PowerPoint slide