Preparation of 0-2 dimensional organic-decorated quaternary TM-Cd-Sb-Se (TM = Zn, Mn, Fe) compounds by solvothermal method: Syntheses, crystal structures and properties

Three organic-decorated quaternary TM-Cd-Sb-Se (TM = Zn, Mn, Fe) compounds were prepared under Iris (2-aminoethyl) amine conditions by solvent method, namely, [Zn(tren)](2)CdSb2Se6 (1), [Mn(tren)]CdSb2Se5 (2) and [Fe(tren)]Cd2SbSe5 (3) [tren = tris (2-aminoethyl) amine)]. The single-crystal X-ray diffraction analyses showed that the three compounds structures were 0-D {[Zn(tren)](2)CdSb2Se6} (1) cluster, 1-D {[Mn(tren)]CdSb2Se5} (2) ribbon and 2-D {[Fe(tren)]Cd2SbSe5} (3) layered. A series of characterizations of these compounds were performed, as estimated from the adsorption spectra, the band gaps of 1, 2 and 3 are 2.09, 1.78 and 1.91eV, respectively. Photoluminescence experiments show that compounds 2 and 3 exhibit luminescent properties. And the thermal stability of these compounds was tested by thermogravimetric and differential scanning calorimetry.

Automated summary

Three organic-decorated quaternary TM-Cd-Sb-Se compounds were prepared and characterized by X-ray diffraction and other techniques in this study, revealing their structures and properties such as absorption spectra, band gaps, and luminescent properties. The thermal stability of these compounds was also evaluated using thermogravimetric and differential scanning calorimetry.