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Bugaris DE, Malliakas CD, Chung DY, Kanatzidis MG. Metallic Borides, La2Re3B7 and La3Re2B5, Featuring Extensive Boron–Boron Bonding. Inorg Chem 2016; 55:1664-73. [DOI: 10.1021/acs.inorgchem.5b02599] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel E. Bugaris
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Christos D. Malliakas
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Duck Young Chung
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Mercouri G. Kanatzidis
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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Bugaris DE, Han F, Im J, Chung DY, Freeman AJ, Kanatzidis MG. Crystal Growth, Structures, and Properties of the Complex Borides, LaOs2Al2B and La2Os2AlB2. Inorg Chem 2015; 54:8049-57. [PMID: 26241801 DOI: 10.1021/acs.inorgchem.5b01275] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Single crystals of two novel quaternary metal borides, LaOs2Al2B and La2Os2AlB2, have been grown from La/Ni eutectic fluxes. LaOs2Al2B crystallizes in tetragonal space group P4/mmm with the CeCr2Si2C-type structure, and lattice parameters a = 4.2075(6) Å and c = 5.634(1) Å. La2Os2AlB2 exhibits a new crystal structure in monoclinic space group C2/c with lattice parameters a = 16.629(3) Å, b = 6.048(1) Å, c = 10.393(2) Å, and β = 113.96(3)°. Both structures are three-dimensional frameworks with unusual coordination (for solid-state compounds) of the boron atoms by transition metal atoms. The boron atom is square planar in LaOs2Al2B, whereas it exhibits linear and T-shaped geometries in La2Os2AlB2. Electrical resistivity measurements reveal poor metal behavior (ρ300 K ∼ 900 μΩ cm) for La2Os2AlB2, consistent with the electronic band structure calculations, which also predict a metallic character for LaOs2Al2B.
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Affiliation(s)
- Daniel E Bugaris
- †Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Fei Han
- †Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Jino Im
- ‡Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States.,§Advanced Material Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea
| | - Duck Young Chung
- †Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Arthur J Freeman
- ‡Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States
| | - Mercouri G Kanatzidis
- †Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States.,∥Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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