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Two manganese-amine complexes incorporating thioantimonates, namely (dienH3)[(dienH)MnSb8S15]⋅H2O (dien = diethylenetriamine) (1) and [Mn(teta)(H2O)2]2[Mn(tren)]2Sb3S12⋅H3O (2, teta = triethylenetetramine, tren = tris(2-aminoethyl)amine), have been solvothermally synthesized and structurally characterized. Interestingly, the organic amines show diversiform structure-directing actions in the title compounds. In compound 1, two dien molecules exhibit partial coordination to Mn2+ ions and protonated cations, and compound 2 contains mixed tetradentate tren and teta chelating amines. The optical properties, thermal stabilities and magnetic properties have also been studied. [ABSTRACT FROM AUTHOR]

Four new quaternary chalcogenides, Ba4AgGaS6 ( 1), Ba4AgGaSe6 ( 2), Ba4CuInS6 ( 3), and Ba4AgInS6 ( 4), were synthesized by solid-state reactions and their structures were characterized through single-crystal X-ray diffraction. In spite of their similar chemical compositions, the flexible arrangement between the transition metals and the triel atoms leads to subtle differences in their polyanion structures. All structures feature similar [MTrQ6]8− 1D polyanionic chains (M=Cu, Ag; Tr=Ga, In; Q=S, Se), which are constructed from corner-sharing MQ4 or TrQ4 tetrahedra. However, the transition metals and triels are mixed in 1, 2, and 3, but they occupy independent crystallographic sites in 4. As a result, compounds 1- 3 belong to the known Ba2CoS3 ( Pnma No. 62) or Ba2MnS3 ( Pnma No. 62) class, whereas 4 crystallizes in its own structural type within the monoclinic P21/ c (No. 14) space group. The structural relationship among these new phases was also studied with the aid of DFT calculations and related optical properties are presented as well. [ABSTRACT FROM AUTHOR]

Ba4AgGaS6 (I), Ba4AgGaSe6 (II), Ba4CuInS6 (III), and Ba4AgInS6 (IV) are prepared by solid-state reactions of the elements and/or binary chalcogenides (fused silica tube under Ar, 850-960 °C, 3-7 d). [ABSTRACT FROM AUTHOR]