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Syntheses, crystal structures and characterizations of BaZn(SeO3)2 and BaZn(TeO3)Cl2

✍ Scribed by Hai-Long Jiang; Mei-Ling Feng; Jiang-Gao Mao

Book ID
104029566
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
456 KB
Volume
179
Category
Article
ISSN
0022-4596

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✦ Synopsis

Two new barium zinc selenite and tellurite, namely, BaZn(SeO 3 ) 2 and BaZn(TeO 3 )Cl 2 , have been synthesized by the solid state reaction. The structure of BaZn(SeO 3 ) 2 features double chains of [Zn(SeO 3 ) 2 ] 2Γ€ anions composed of four-and eight-member rings which are alternatively along a-axis. The double chains of [Zn 2 (TeO 3 ) 2 Cl 3 ] 3Γ€ anions in BaZn(TeO 3 )Cl 2 are formed by Zn 3 Te 3 rings in which each tellurite group connects with three ZnO 3 Cl tetrahedra. BaZn(SeO 3 ) 2 and BaZn(TeO 3 )Cl 2 are wide bandgap semiconductors based on optical diffuse reflectance spectrum measurements.

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The decomposition of Er 2 (SeO 4 ) 3 in the presence of LiF in a sealed gold ampoule at 8701C yielded single crystals of Er 2 (SeO 3 ) 3 . The triclinic crystal structure (P 1 1; Z ¼ 2; a ¼ 698:2ð1Þ; b ¼ 800:6ð1Þ; c ¼ 895:0ð1Þ pm; a ¼ 71:38ð1Þ; b ¼ 70:13ð1Þ; c ¼ 65:87ð1Þ1; R all ¼ 0:0364) contains t