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Synthesis, Structural, and Optical Characterization of a New Europium(II) Tin Selenide, Eu 8 (Sn 4 Se 14 )(Se 3 ) 2 with a (Sn 4 Se 14 ) 12– Building Block
Author(s) -
Evenson IV Carl R.,
Dorhout Peter K.
Publication year - 2001
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200109)627:9<2178::aid-zaac2178>3.0.co;2-s
Subject(s) - orthorhombic crystal system , europium , selenide , chalcogenide , band gap , chemistry , crystallography , tin , crystal structure , stereochemistry , materials science , ion , optoelectronics , selenium , organic chemistry
A new phase in europium‐tin‐chalcogenide chemistry has been prepared using the reactive flux method: Eu 8 (Sn 4 Se 14 )(Se 3 ) 2 . The compound crystallizes in the orthorhombic space group P2 1 2 1 2 with cell parameters a = 11.990(2) Å, b = 16.425(4) Å, c = 8.543(1) Å, and Z = 2. Eu 8 (Sn 4 Se 14 )(Se 3 ) 2 is a three dimensional structure with Eu II cations linked together with an unusual (Sn 4 Se 14 ) 12– anionic unit and (Se 3 ) 2– chains. UV‐VIS‐NIR band‐gap analysis shows that these black metallic crystals are likely semiconductors with an optical band‐gap of 1.07 eV.