Solvothermal Syntheses and Crystal Structures of Rare Earth Thioantimonates [Y(en)4]SbS4·0.5en and [Tm(en)4]SbS4·0.5en

Abstract

AbstractTwo rare earth metal thioantimonates [RE(en) 4 ]SbS 4 ·0.5en (RE = Y(1), Tm(2); en = ethylenediamine) were synthesized under mild solvothermal conditions. Compounds 1 and 2 are isostructural, and both crystallize in monoclinic space group P2 1 /n. Crystallographic data for 1: a = 11.0894(19), b = 12.905(2), c = 16.000(3) A, β = 91.792(4), V = 2288.7(7) A 3 , Z = 4. For 2: a = 11.0870(14), b = 12.8977(16), c = 15.986(2) A, β = 91.879(3), V = 2284.7(5) A 3 , Z = 4. The four-en coordinated rare earth complex cation [RE(en) 4 ] 3+ formed in situ balances the charge of the [SbS 4 ] 3− anion in the crystal structure. The RE 3+ ion is in an eight-coordinated environment involving eight N atoms of four en ligands forming a bicapped trigonal prism. Hydrogen bonds link [RE(en) 4 ] 3+ , [SbS 4 ] 3− and en species into a three-dimensional structure. The structure determination of 1 and 2 implies that the ionic radii of rare earth metal ions play an important role on the structures of the rare earth metal thioantimonates.Index AbstractRare earth metal thioantimonates [RE(en) 4 ]SbS 4 ·0.5en (RE = Y, Tm) were synthesized under mild solvothermal conditions, whose structures are related with the ionic radii of the rare earth metal ions.[IMAGE]