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Kim SW, Tan X, Frank CE, Deng Z, Wang H, Collins L, Lapidus SH, Jin C, Gopalan V, Kalinin SV, Walker D, Greenblatt M. High-Pressure, High-Temperature Synthesis and Characterization of Polar and Magnetic LuCrWO 6. Inorg Chem 2020; 59:3579-3584. [PMID: 32100540 DOI: 10.1021/acs.inorgchem.9b02900] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new polar and magnetic oxide, LuCrWO6, was synthesized under high pressure (6 GPa) and high temperature (1673 K). LuCrWO6 is isostructural with the previously reported polar YCrWO6 (SG: Pna21, no. 33). The ordering of CrO6 and WO6 octahedra in the edge-shared dimers induce the polar structure. The effective size of rare earth, Ln cation does not seem to affect the symmetry of LnCrWO6. Second harmonic generation measurements of LuCrWO6 confirmed the noncentrosymmetric character and strong piezoelectric domains are observed from piezoresponse force microscopy at room temperature. LuCrWO6 exhibits antiferromagnetic behavior, TN, of ∼18 K with a Weiss temperature of -30.7 K.
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Affiliation(s)
- Sun Woo Kim
- Department of Chemistry Education, Chosun University, Gwangju 61452, South Korea.,Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854 United States
| | - Xiaoyan Tan
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854 United States
| | - Corey E Frank
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854 United States
| | - Zheng Deng
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Huaiyu Wang
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Liam Collins
- Center for Nanophase Material Science & Institute for Functional Imaging Materials, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Saul H Lapidus
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Changqing Jin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Venkatraman Gopalan
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Sergei V Kalinin
- Center for Nanophase Material Science & Institute for Functional Imaging Materials, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - David Walker
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964, United States
| | - Martha Greenblatt
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854 United States
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Lang WJ, Kurmoo M, Zeng MH. A Chiral and Polar Single-Molecule Magnet: Synthesis, Structure, and Tracking of Its Formation Using Mass Spectrometry. Inorg Chem 2019; 58:7236-7242. [PMID: 31091083 DOI: 10.1021/acs.inorgchem.9b00269] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The solvothermal reaction of cobalt(II) sulfate with S, S-1,2- bis(1-methyl-1 H-benzo[ d]imidazol-2-yl)ethane-1,2-diol, (H2L), neutralized with triethylamine (Et3N) in a mixture of methanol and water (2:1), resulted in triangular red crystals of [CoII7(L)3(SO4)3(OH)2(H2O)9]·4H2O·3CH3OH (Co7). It is formed of chiral and polar clusters crystallizing in the R3 space group. Co7 consists of apex-shared asymmetric dicubane units where all of the metals adopt an octahedral coordination and the three ligands wrap diagonally around the unit. One end of the cluster is bonded by six water molecules and the other end by three monodentate sulfates. The head-to-tail packing through extended H-bonds leads to polar chains. The ligand has lost two protons, adopts a cis-conformation, and is coordinated to five metals around the waist of the dicubane. Electrospray ionization mass spectrometry (ESI-MS) of solutions of the reaction as a function of time reveals the possible step-by-step assembly process of the cluster: the initial product [CoII(HL)(SO4)]2- combines with CoSO4, forming [CoII2(HL)(SO4)2]2-, and then, upon addition of Et3N, dimerizes through a [OH]- bridge to [CoII4(HL)2(OH)(CH3OH)2(SO4)3]- followed by capture of one Co2+ and one CoSO4 to form [CoII6(L)2(OH)(CH3O)(SO4)4]2- before eventually binding to CoL to form [CoII7(L)3(OH)2(SO4)4]2-. These results allow us to propose a possible process for the formation of Co7, which is a good example for chiral multidentate chelating ligand-controlled assembly of clusters. Magnetization measurements as a function of the temperature, field, and ac-frequency reveal ferromagnetic coupled moments and single-molecule magnetism (SMM).
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Affiliation(s)
- Wen-Jing Lang
- Department of Chemistry and Pharmaceutical Sciences, Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , Guangxi Normal University , Guilin , 541004 , P. R. China
| | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg, CNRS-UMR7177 , Université de Strasbourg , 4 rue Blaise Pascal , 67070 Strasbourg Cedex , France
| | - Ming-Hua Zeng
- Department of Chemistry and Pharmaceutical Sciences, Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , Guangxi Normal University , Guilin , 541004 , P. R. China.,Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry & Chemical Engineering , Hubei University , Wuhan , 430062 , P. R. China
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