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Khoury JF, Song X, Schoop LM. Ln
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MBi
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(Ln=Pr, Nd, Sm; M=Zr, Hf): Intermetallics with Hypervalent Bismuth Chains. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jason F. Khoury
- Department of Chemistry Princeton University Princeton New Jersey 08544 United States
| | - Xiaoyu Song
- Department of Chemistry Princeton University Princeton New Jersey 08544 United States
| | - Leslie M. Schoop
- Department of Chemistry Princeton University Princeton New Jersey 08544 United States
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Khoury JF, Han B, Jovanovic M, Singha R, Song X, Queiroz R, Ong NP, Schoop LM. A Class of Magnetic Topological Material Candidates with Hypervalent Bi Chains. J Am Chem Soc 2022; 144:9785-9796. [PMID: 35613438 DOI: 10.1021/jacs.2c02281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The link between crystal and electronic structure is crucial for understanding structure-property relations in solid-state chemistry. In particular, it has been instrumental in understanding topological materials, where electrons behave differently than they would in conventional solids. Herein, we identify 1D Bi chains as a structural motif of interest for topological materials. We focus on Sm3ZrBi5, a new quasi-one-dimensional (1D) compound in the Ln3MPn5 (Ln = lanthanide; M = metal; Pn = pnictide) family that crystallizes in the P63/mcm space group. Density functional theory calculations indicate a complex, topologically nontrivial electronic structure that changes significantly in the presence of spin-orbit coupling. Magnetic measurements show a quasi-1D antiferromagnetic structure with two magnetic transitions at 11.7 and 10.7 K that are invariant to applied field up to 9 T, indicating magnetically frustrated spins. Heat capacity, electrical, and thermoelectric measurements support this claim and suggest complex scattering behavior in Sm3ZrBi5. This work highlights 1D chains as an unexplored structural motif for identifying topological materials, as well as the potential for rich physical phenomena in the Ln3MPn5 family.
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Affiliation(s)
- Jason F Khoury
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Bingzheng Han
- Department of Physics, Princeton University, Princeton, New Jersey 08544, United States
| | - Milena Jovanovic
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Ratnadwip Singha
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Xiaoyu Song
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Raquel Queiroz
- Department of Physics, Columbia University, New York, New York 10027, United States
| | - Nai-Phuan Ong
- Department of Physics, Princeton University, Princeton, New Jersey 08544, United States
| | - Leslie M Schoop
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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Ovchinnikov A, Bobev S. Electronic stabilization by occupational disorder in the ternary bismuthide Li 3-x-yIn xBi (x ≃ 0.14, y ≃ 0.29). Acta Crystallogr C Struct Chem 2020; 76:585-590. [PMID: 32499456 DOI: 10.1107/s2053229620006439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/13/2020] [Indexed: 11/10/2022] Open
Abstract
A ternary derivative of Li3Bi with the composition Li3-x-yInxBi (x ≃ 0.14, y ≃ 0.29) was produced by a mixed In+Bi flux approach. The crystal structure adopts the space group Fd-3m (No. 227), with a = 13.337 (4) Å, and can be viewed as a 2 × 2 × 2 superstructure of the parent Li3Bi phase, resulting from a partial ordering of Li and In in the tetrahedral voids of the Bi fcc packing. In addition to the Li/In substitutional disorder, partial occupation of some Li sites is observed. The Li deficiency develops to reduce the total electron count in the system, counteracting thereby the electron doping introduced by the In substitution. First-principles calculations confirm the electronic rationale of the observed disorder.
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Affiliation(s)
- Alexander Ovchinnikov
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, SE-10691, Stockholm, Sweden
| | - Svilen Bobev
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
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Ovchinnikov A, Makongo JPA, Bobev S. Yet again, new compounds found in systems with known binary phase diagrams. Synthesis, crystal and electronic structure of Nd 3Bi 7 and Sm 3Bi 7. Chem Commun (Camb) 2018; 54:7089-7092. [PMID: 29881846 DOI: 10.1039/c8cc02563k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binary bismuthides Nd3Bi7 and Sm3Bi7 were synthesized and structurally characterized for the first time. The results from the calorimetric analysis show that both compounds are stable only up to about 500 °C, which may explain why they were overlooked during the original assessment of the corresponding phase diagrams.
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Affiliation(s)
- Alexander Ovchinnikov
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.
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Ovchinnikov A, Bobev S. Undistorted linear Bi chains with hypervalent bonding in La 3TiBi 5 from single-crystal X-ray diffraction. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:618-622. [PMID: 29726472 DOI: 10.1107/s205322961800565x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 04/10/2018] [Indexed: 11/10/2022]
Abstract
The crystal structure of the lanthanum titanium bismuthide La3TiBi5 (Pearson code hP18, Wyckoff sequence b d g2) has been established from single-crystal X-ray diffraction data and analyzed in detail using first-principles calculations. There are no anomalies pertaining to the atomic displacement parameter of the Ti site, previously reported based on a powder X-ray diffraction analysis of this compound. The anionic substructure contains columns of face-sharing TiBi6 octahedra and linear Bi chains. Due to a significant La(5d) and Bi(6p) orbital mixing, a perfectly one-dimensional character of the Bi chains is not realised, while a three-dimensional electronic structure is established instead. The latter fact explains the stability of the polyanionic pnictide units against Peierls distortions. The hypervalent bonding in the Bi chains is reflected in a rather long Bi-Bi distance of 3.2264 (4) Å and a typical pattern of bonding and antibonding interactions, as revealed by electronic structure calculations.
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Affiliation(s)
- Alexander Ovchinnikov
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Svilen Bobev
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
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Murakami T, Yamamoto T, Takeiri F, Nakano K, Kageyama H. Hypervalent Bismuthides La3MBi5(M = Ti, Zr, Hf) and Related Antimonides: Absence of Superconductivity. Inorg Chem 2017; 56:5041-5045. [DOI: 10.1021/acs.inorgchem.7b00031] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taito Murakami
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takafumi Yamamoto
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Fumitaka Takeiri
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kousuke Nakano
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
- CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
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Prakash J, Schäfer MC, Bobev S. Synthesis and structure determination of seven ternary bismuthides: crystal chemistry of the RELi3Bi2 family (RE = La-Nd, Sm, Gd, and Tb). ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2015; 71:894-9. [PMID: 26422218 DOI: 10.1107/s2053229615016393] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 09/02/2015] [Indexed: 11/10/2022]
Abstract
Zintl phases are renowned for their diverse crystal structures with rich structural chemistry and have recently exhibited some remarkable heat- and charge-transport properties. The ternary bismuthides RELi3Bi2 (RE = La-Nd, Sm, Gd, and Tb) (namely, lanthanum trilithium dibismuthide, LaLi3Bi2, cerium trilithium dibismuthide, CeLi3Bi2, praseodymium trilithium dibismuthide, PrLi3Bi2, neodymium trilithium dibismuthide, NdLi3Bi2, samarium trilithium dibismuthide, SmLi3Bi2, gadolinium trilithium dibismuthide, GdLi3Bi2, and terbium trilithium dibismuthide, TbLi3Bi2) were synthesized by high-temperature reactions of the elements in sealed Nb ampoules. Single-crystal X-ray diffraction analysis shows that all seven compounds are isostructural and crystallize in the LaLi3Sb2 type structure in the trigonal space group P-3m1 (Pearson symbol hP6). The unit-cell volumes decrease monotonically on moving from the La to the Tb compound, owing to the lanthanide contraction. The structure features a rare-earth metal atom and one Li atom in a nearly perfect octahedral coordination by six Bi atoms. The second crystallographically unique Li atom is surrounded by four Bi atoms in a slightly distorted tetrahedral geometry. The atomic arrangements are best described as layered structures consisting of two-dimensional layers of fused LiBi4 tetrahedra and LiBi6 octahedra, separated by rare-earth metal cations. As such, these compounds are expected to be valance-precise semiconductors, whose formulae can be represented as (RE(3+))(Li(1+))3(Bi(3-))2.
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Affiliation(s)
- Jai Prakash
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Marion C Schäfer
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Svilen Bobev
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
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Mizoguchi H, Hosono H. A metal-insulator transition in R2O2Bi with an unusual Bi2- square net (R = rare earth or Y). J Am Chem Soc 2011; 133:2394-7. [PMID: 21302922 DOI: 10.1021/ja111015p] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of tetragonal ThCr(2)Si(2)-type compounds, R(2)O(2)Bi (R = rare earth or Y), are synthesized in which an unusual Bi(2-) anion forms a square net layer that is sandwiched between (R(2)O(2))(2+) fluorite layers. Two-dimensional (2D) electronic bands around the Fermi energy are predominantly composed of 6p(x)6p(y) orbitals in the Bi(2-) square net, which contains a positive hole per Bi(2-) ion. The decrease in the size of the square net caused by reducing the size of the R ion enhances the electrical conductivity because of the hole, resulting in a "chemical pressure"-induced metal-insulator transition.
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Affiliation(s)
- Hiroshi Mizoguchi
- Frontier Research Center, Tokyo Institute of Technology, Midori-ku, Yokohama, Japan
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Todorov I, Chung DY, Ye L, Freeman AJ, Kanatzidis MG. Synthesis, Structure and Charge Transport Properties of Yb5Al2Sb6: A Zintl Phase with Incomplete Electron Transfer. Inorg Chem 2009; 48:4768-76. [DOI: 10.1021/ic900035a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Iliya Todorov
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Duck Young Chung
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Linhui Ye
- College of Chemistry and Molecular Engineering, Peking University, Peking 100871, China
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208,
| | - Arthur J. Freeman
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208,
| | - Mercouri G. Kanatzidis
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208
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