Synthesis, Structures, and Luminescent Properties of Sodium Rare‐Earth Metal(III) Chloride Oxotellurates(IV), Na2Ln3Cl3[TeO3]4 (Ln = Sm, Eu, Gd, Tb, Dy, and Ho). Issue 21 (7th November 2017)

• Record Type: Journal Article
• Authors: Charkin, Dmitri O.; Zitzer, Sabine; Greiner, Stefan; Dorofeev, Sergey G.; Olenev, Andrei V.; Berdonosov, Peter S.; Schleid, Thomas; Dolgikh, Valery A.
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 643:Issue 21(2017)
• Page Start: 1654
• Page End: 1660
• Publication Date: 2017-11-07
• Subjects: Rare‐earth metal(III) compounds -- Sodium -- Oxotellurates(IV) -- Structure elucidation -- Luminescence; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201700227
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : Six sodium rare‐earth metal(III) chloride oxotellurates(IV), Na2 Ln 3 Cl3 [TeO3 ]4, isostructural to Na2 Y3 Cl3 [TeO3 ]4, were synthesized by flux techniques and characterized by single‐crystal XRD. The compounds crystallize in the monoclinic space group C 2/ c with lattice constants a = 23.967(1), b = 5.6342(3), c = 16.952(1) Å, β = 134.456(5)° for Ln = Sm, a = 23.932(2), b = 5.6044(5), c = 17.134(1) Å, β = 135.151(6)° for Ln = Eu, a = 23.928(1), b = 5.5928(1), c = 17.1133(8) Å, β = 135.366(3)° for Ln = Gd, a = 23.907(1), b = 5.569(3), c = 16.745(1) Å, β = 134.205(3)° for Ln = Tb, a = 23.870(1), b = 5.547(3), c = 16.665(1) Å, β = 134.102(3)° for Ln = Dy, and a = 23.814(1), b = 5.526(3), c = 16.626(1) Å, β = 134.016(3)° for Ln = Ho and Z = 4. Their crystal structure can be considered as a framework built of intergrowing Ln –O and Na–(O, Cl) slabs with channel walls decorated by tellurium atoms of [TeO3 ] 2– groups. The luminescent properties of the new compounds due to the Ln 3+ cations are described and discussed. We also discuss the crystal chemistry of various alkali‐metal rare‐earth metal(III) halide oxochalcogenates(IV). Abstract :