High-Pressure/High-Temperature Synthesis of LnB3.6O7 (Ln=La, Pr) - Two Unique Lanthanoid Borates in a Defective α-SrB4O7-Structure-Type

被引：1
|
作者：
Teichtmeister, Tobias A. [1 ]
Widmann, Ingo [1 ]
Bayarjargal, Lkhamsuren [2 ]
Tribus, Martina [3 ]
Heymann, Gunter [1 ]
Wurst, Klaus [1 ]
Huppertz, Hubert [1 ]
机构：
[1] Univ Innsbruck, Dept Gen Inorgan & Theoret Chem, Innrain 80-82, A-6020 Innsbruck, Austria
[2] Goethe Univ Frankfurt Main, Inst Geowissensch, Altenhoferallee 1, D-60438 Frankfurt, Germany
[3] Univ Innsbruck, Dept Mineral & Petrog, Innrain 52, A-6020 Innsbruck, Austria
来源：
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2024年 / 27卷 / 04期
关键词：
borates; high-pressure chemistry; lanthanum; praseodymium; solid-state chemistry; CRYSTAL-STRUCTURE; STRUCTURE VALIDATION; STRONTIUM; DIBORATE; SPECTROSCOPY; BEHAVIOR; SILVER; LA;
D O I：
10.1002/ejic.202300555
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The orthorhombic phases LaB3.6O7 and PrB3.6O7 were obtained by high-pressure/high-temperature syntheses at 11 GPa and temperatures of 1130 degree celsius (LaB3.6O7) as well as 850 degree celsius (PrB3.6O7) using a modified Walker-type multianvil apparatus. The title compounds crystallize in the space group Pmn2(1 )(no. 31) exhibiting a defective alpha-SrB4O7 structure variant with the unit cell parameters a=10.4551(3) angstrom, b=4.4562(1) angstrom, c=4.2973(1) angstrom for LaB3.6O7 and a=10.4305(3) angstrom, b=4.4257(1) angstrom, c=4.2815(1) angstrom for PrB3.6O7. Both compounds were characterized by powder/single-crystal X-ray diffraction, vibrational spectroscopy, second harmonic generation, and electron dispersive X-ray spectroscopy measurements.
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页数：10
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