Syntheses and characterization of quaternary selenites and tellurite of antimony, NaSbSe2O7, AgSbSe2O7 and Na2Sb4Te2O14

被引：0
作者：
Robert, Rintu [1 ]
Mangalassery, Shilpa [2 ]
Rao, D. Narayana [2 ]
Vidyasagar, Kanamaluru [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Chem, Chennai 600036, India
[2] Univ Hyderabad, Sch Phys, Hyderabad 500046, India
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2023年 / 327卷
关键词：
Selenite; Tellurite; Antimony; Synthesis; Structure; Second harmonic generation; STRUCTURAL-CHARACTERIZATION; HYDROTHERMAL SYNTHESIS; VANADIUM SELENITE; CRYSTAL-STRUCTURE; CS; OXIDES; RB;
D O I：
10.1016/j.jssc.2023.124228
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
NaSbSe2O7, AgSbSe2O7 and Na2Sb4Te2O14 compounds have been synthesized by solid state reactions and characterized by single crystal X-ray diffraction, thermal analysis, reflectance spectroscopy, and second harmonic generation (SHG) response studies. The isostructural NaSbSe2O7 and AgSbSe2O7 selenites crystallize in centrosymmetric Cmcm space group with respective orthorhombic unit cell parameter values of a = 10.0704(4) and 10.0449(5) & ANGS;, b = 8.3074(4) and 8.3825(5) & ANGS; and c = 7.1449(3) and 7.1438(5) & ANGS;. Their one-dimensional structure consists of Na+ or Ag+ cations and anionic [SbSe2O7]- chains made up of SbO6 octahedra and SeO3 trigonal pyramids. Na2Sb4Te2O14 is a mixed-valent compound, which crystallizes in noncentrosymmetric P3121 space group with hexagonal unit cell parameter values of a = 7.32670(10) & ANGS; and c =18.5150(5) & ANGS;. It has a threedimensional hexagonal-tungsten-oxide (HTO) related anionic [Sb4Te2O14]2-structural framework and shows powder SHG response equivalent to 0.4 x KDP.
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页数：7
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