Unknown

Dataset Information

0

High-Pressure Synthesis of ?-Ir4B5 and Determination of the Compressibility of Various Iridium Borides.

ABSTRACT: A new iridium boride, ?-Ir4B5, was synthesized under high-pressure/high-temperature conditions of 10.5 GPa and 1500 °C in a multianvil press with a Walker-type module. The new modification ?-Ir4B5 crystallizes in a new structure type in the orthorhombic space group Pnma (no. 62) with the lattice parameters a = 10.772(2) Å, b = 2.844(1) Å, and c = 6.052(2) Å with R1 = 0.0286, wR2 = 0.0642 (all data), and Z = 2. The structure was determined by single-crystal X-ray and neutron powder diffraction on samples enriched in 11B. The compound is built up by an alternating stacking of boron and iridium layers with the sequence ABA'B'. Additionally, microcalorimetry, hardness, and compressibility measurements of the binary iridium borides ?-Ir4B5, ?-Ir4B5, Ir5B4, hexagonal Ir4B3- x and orthorhombic Ir4B3- x were carried out and theoretical investigations based on density function theory (DFT) were employed to complement a comprehensive evaluation of structure-property relations. The incorporation of boron into the structures does not enhance the compressibility but leads to a significant reduction of the bulk moduli and elastic constants in comparison to elemental iridium.

SUBMITTER: Petermuller B 

PROVIDER: S-EPMC6106047 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

High-Pressure Synthesis of β-Ir<sub>4</sub>B<sub>5</sub> and Determination of the Compressibility of Various Iridium Borides.

Petermüller Benedikt B   Neun Christopher C   Wurst Klaus K   Bayarjargal Lkhamsuren L   Zimmer Dominik D   Morgenroth Wolfgang W   Avalos-Borja Miguel M   Becerril-Juarez Ignacio Guadalupe IG   Mühlbauer Martin J MJ   Winkler Björn B   Huppertz Hubert H  

Inorganic chemistry 20180807 16

A new iridium boride, β-Ir<sub>4</sub>B<sub>5</sub>, was synthesized under high-pressure/high-temperature conditions of 10.5 GPa and 1500 °C in a multianvil press with a Walker-type module. The new modification β-Ir<sub>4</sub>B<sub>5</sub> crystallizes in a new structure type in the orthorhombic space group Pnma (no. 62) with the lattice parameters a = 10.772(2) Å, b = 2.844(1) Å, and c = 6.052(2) Å with R1 = 0.0286, wR2 = 0.0642 (all data), and Z = 2. The structure was determined by single-cry  ...[more]

Similar Datasets

Unknown Phase Stability and Compressibility of 3R-MoN<sub>2</sub> at High Pressure.
| S-EPMC6642113 | biostudies-literature
Unknown Synthesis, Spectroscopy and Electrochemistry in Relation to DFT Computed Energies of Ferrocene- and Ruthenocene-Containing -Diketonato Iridium(III) Heteroleptic Complexes. Structure of [(2-Pyridylphenyl)<sub>2</sub>Ir(RcCOCHCOCH<sub>3</sub>].
| S-EPMC6864483 | biostudies-literature
Unknown High-Pressure Behavior of Nickel Sulfate Monohydrate: Isothermal Compressibility, Structural Polymorphism, and Transition Pathway.
| S-EPMC7201398 | biostudies-literature
Unknown Cage Adaption by High-Pressure Synthesis: The Clathrate-I Borosilicide Rb<sub>8</sub>B<sub>8</sub>Si<sub>38</sub>.
| S-EPMC7887739 | biostudies-literature
Unknown Spontaneous dynamical disordering of borophenes in MgB<sub>2</sub> and related metal borides.
| S-EPMC8560812 | biostudies-literature
Unknown Composite amine mixed matrix membranes for high-pressure CO<sub>2</sub>-CH<sub>4</sub> separation: synthesis, characterization and performance evaluation.
| S-EPMC7540797 | biostudies-literature
Unknown ?-Oxido-bis-[hydridotris(tri-methyl-phosphane-?P)iridium(III)](Ir-Ir) bis-(tetra-fluorido-borate) dihydrate.
| S-EPMC3998581 | biostudies-literature
Unknown High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re<sub>2</sub>(N<sub>2</sub>)(N)<sub>2</sub> stable at ambient conditions.
| S-EPMC6611777 | biostudies-literature
Unknown High pressure synthesis of phosphine from the elements and the discovery of the missing (PH<sub>3</sub>)<sub>2</sub>H<sub>2</sub> tile.
| S-EPMC7705733 | biostudies-literature
Unknown Na<sub>3</sub>FeH<sub>7</sub> and Na<sub>3</sub>CoH<sub>6</sub>: Hydrogen-Rich First-Row Transition Metal Hydrides from High Pressure Synthesis.
| S-EPMC7672699 | biostudies-literature