Synthesis, Crystal Structure, and Compressibilities of Mn3-xIr5B2+x (0 ≤ x ≤ 0.5) and Mn2IrB2

被引：5

作者：

Petermueller, Benedikt ^{[1
]}

Neun, Christopher ^{[2
]}

Stekiel, Michal ^{[2
]}

Zimmer, Dominik ^{[2
]}

Tribus, Martina ^{[3
]}

Wurst, Klaus ^{[1
]}

Winkler, Bjoern ^{[2
]}

Huppertz, Hubert ^{[1
]}

机构：

[1] Leopold Franzens Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, Innrain 80-82, A-6020 Innsbruck, Austria

[2] Goethe Univ Frankfurt Main, Abt Kristallog, Inst Geowissensch, Altenhoferallee 1, D-60438 Frankfurt, Germany

[3] Leopold Franzens Univ Innsbruck, Inst Mineral & Petrog, Innrain 52, A-6020 Innsbruck, Austria

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2018年 / 24卷 / 55期

关键词：

borides; compressibility; crystal structures; density functional calculations; EDX measurements; high-temperature synthesis; RHODIUM BORIDES; COMPLEX BORIDES; PRESSURE; SUBSTITUTION; DIBORIDE; MN; FE; CU; SUPERCONDUCTIVITY; MO2IRB2-TYPE;

D O I：

10.1002/chem.201803235

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The new ternary transition metal borides Mn3-xIr5B2+x (0 <= x <= 0.5) and Mn2IrB2 were synthesized from the elements under high temperature and high-pressure/high-temperature conditions. Both phases can be synthesized as powder samples in a radio-frequency furnace in argon atmosphere. High-pressure/high-temperature conditions were used to grow single-crystals. The phases represent the first ternary compounds within the system Mn-Ir-B. Mn3-xIr5B2+x (0 <= x <= 0.5) crystallizes in the Ti3Co5B2 structure type (P4/mbm; no. 127) with parameters a=9.332(1), c=2.896(2)angstrom, and Z=2. Mn2IrB2 crystallizes in the beta-Cr2IrB2 crystal structure type (Cmcm; no. 63) with parameters a=3.135(3), b=9.859(5), c=13.220(3)angstrom, and Z=8. The compositions of both compounds were confirmed by EDX measurements and the compressibility was determined experimentally for Mn3-xIr5B2+x and by DFT calculations for Mn2IrB2.

引用

页码：14679 / 14685

页数：7

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