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Zhang S, Yang X, Wooten BL, Bag R, Yadav L, Moore CE, Parida S, Trivedi N, Lu Y, Heremans JP, Haravifard S, Wu Y. Two-Dimensional Cobalt(II) Benzoquinone Frameworks for Putative Kitaev Quantum Spin Liquid Candidates. J Am Chem Soc 2024; 146:15061-15069. [PMID: 38787332 DOI: 10.1021/jacs.3c14537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The realization and discovery of quantum spin liquid (QSL) candidate materials are crucial for exploring exotic quantum phenomena and applications associated with QSLs. Most existing metal-organic two-dimensional (2D) quantum spin liquid candidates have structures with spins arranged on the triangular or kagome lattices, whereas honeycomb-structured metal-organic compounds with QSL characteristics are rare. Here, we report the use of 2,5-dihydroxy-1,4-benzoquinone (X2dhbq, X = Cl, Br, H) as the linkers to construct cobalt(II) honeycomb lattices (NEt4)2[Co2(X2dhbq)3] as promising Kitaev-type QSL candidate materials. The high-spin d7 Co2+ has pseudospin-1/2 ground-state doublets, and benzoquinone-based linkers not only provide two separate superexchange pathways that create bond-dependent frustrated interactions but also allow for chemical tunability to mediate magnetic coupling. Our magnetization data show antiferromagnetic interactions between neighboring metal centers with Weiss constants from -5.1 to -8.5 K depending on the X functional group in X2dhbq linkers (X = Cl, Br, H). No magnetic transition or spin freezing could be observed down to 2 K. Low-temperature susceptibility (down to 0.3 K) and specific heat (down to 0.055 K) of (NEt4)2[Co2(H2dhbq)3] were further analyzed. Heat capacity measurements confirmed no long-range order down to 0.055 K, evidenced by the broad peak instead of the λ-like anomaly. Our results indicate that these 2D cobalt benzoquinone frameworks are promising Kitaev QSL candidates with chemical tunability through ligands that can vary the magnetic coupling and frustration.
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Affiliation(s)
- Songwei Zhang
- Department of Chemistry & Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Xu Yang
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States
| | - Brandi L Wooten
- Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Rabindranath Bag
- Department of Physics, Duke University, Durham, North Carolina 27708, United States
| | - Lalit Yadav
- Department of Physics, Duke University, Durham, North Carolina 27708, United States
| | - Curtis E Moore
- Department of Chemistry & Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Smrutimedha Parida
- Department of Chemistry & Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Nandini Trivedi
- Department of Chemistry & Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Yuanming Lu
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States
| | - Joseph P Heremans
- Department of Mechanical & Aerospace Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Sara Haravifard
- Department of Physics, Duke University, Durham, North Carolina 27708, United States
| | - Yiying Wu
- Department of Chemistry & Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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2
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Zhou Y, Zhang YL, Zhang Q, Yang SY, Wei XQ, Tian Z, Shao D. Supramolecular porous frameworks of two Ni(II) coordination polymers with varying structures, porosities, and magnetic properties. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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3
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Kang S, Yu J. Electronic structure and magnetic properties of transition metal Kagome metal-organic frameworks. Phys Chem Chem Phys 2022; 24:22168-22180. [DOI: 10.1039/d2cp02612k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Kagome metal-organic frameworks (MOFs) are considered a new class of materials that can host two-dimensional (2D) magnetism and correlated electron phenomena such as superconductivity and quantum anomalous Hall effect. Despite...
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4
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Jiang Y, Dong J, Li R, Sun F, Wu H. Channel regulation through solvents for
Cd‐MOFs
based on
p
‐methoxyphenyl imidazole dicarboxylate: Synthesis, crystal structure, fluorescence, and explosive identification. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yuxuan Jiang
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Jianping Dong
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Ruixue Li
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Fugang Sun
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Huilu Wu
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People's Republic of China
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5
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Kharwar AK, Mondal A, Sarkar A, Rajaraman G, Konar S. Modulation of Magnetic Anisotropy and Exchange Interaction in Phenoxide-Bridged Dinuclear Co(II) Complexes. Inorg Chem 2021; 60:11948-11956. [PMID: 34314144 DOI: 10.1021/acs.inorgchem.1c00956] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a new class of four dimeric Co(II) complexes [Co2(bbpen)(X)2] (H2bbpen = N,N'-bis(2-hydroxybenzyl)-N,N'-bis(2-methylpyridyl)ethylenediamine) [X- = SCN (1), Cl (2), Br (3), and I (4)] with different coordination geometry of two Co(II) centers (trigonal-prismatic and pseudo-tetrahedral) and their magnetic study. Interestingly, the two Co(II) centers show two different types of magnetic anisotropy. State of the art ab initio CASSCF analysis reveals that the six-coordinate or the trigonal-prismatic Co(II) center possesses a consistently large negative axial zero-field splitting (negative D) parameter (∼-60 cm-1), while the four-coordinate or the pseudo-tetrahedral Co(II) center exhibits a range of D values from +13 to -23 cm-1. Ab initio calculations employing the lines model were used to estimate the magnetic exchange as both the Co(II) centers possess significant magnetic anisotropy. All the complexes display rare ferromagnetic interaction, and the strength of this interaction decreases as the ligand field on the pseudo-tetrahedral Co(II) center decreases from SCN- > Cl- > Br- > I-.
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Affiliation(s)
- Ajit Kumar Kharwar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, Bypass Road, Bhauri, Bhopal 462066, India
| | - Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, Bypass Road, Bhauri, Bhopal 462066, India
| | - Arup Sarkar
- Department of Chemistry, Indian Institute of Technology, Bombay, Powai, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology, Bombay, Powai, Mumbai 400076, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, Bypass Road, Bhauri, Bhopal 462066, India
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6
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Jabar A, Masrour R. Ground States Phase Diagrams and Magnetizations Properties of Ferrimagnetic Model on Decorated Hexagonal Nanolattice: Monte Carlo Study. J CLUST SCI 2021. [DOI: 10.1007/s10876-020-01851-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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Li SF, Wang Q, Li YP, Geng X, Zhao L, He M, Du L, Zhao QH. Different Phenomena in Magnetic/Electrical Properties of Co(II) and Ni(II) Isomorphous MOFs. ACS OMEGA 2021; 6:9213-9221. [PMID: 33842790 PMCID: PMC8028129 DOI: 10.1021/acsomega.1c00574] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Two unprecedented and stable metal-organic frameworks, {[Co2(H2O)2(L)(OH)]·2.5H2O·0.5DMF} n (1) and {[Ni2(H2O)2(L)(OH)]·1.75H2O} n (2), have been synthesized (H3L = 5-(5-carboxy-pyridin-3-yloxy)-isophthalic acid, DMF = N,N-dimethylformamide). Structural analysis shows that 1 and 2 are heteronuclear isomorphous, possessing a three-dimensional (3D) (4,8)-connected flu/fluorite topological framework formed through the interconnection of tetranuclear butterfly {M4(COO)6(OH)2} clusters and the ligands. Although the frameworks of these two compounds are similar, their magnetic properties are different. Compound 1 exhibits an antiferromagnetic interaction in the high-temperature region, while 2 shows a weak ferromagnetic interaction in the whole-temperature region. Furthermore, considering the presence of hydroxyl groups and water molecules in the frameworks, we tested their proton conductivity. The efficient proton transfer pathway in the framework endowed 1 and 2 with excellent proton conductivities of 9.07 × 10-5 and 1.29 × 10-4 S·cm-1 at 363 K and 98% relative humidity (RH), respectively.
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Affiliation(s)
- Shi-Fen Li
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Quan Wang
- Yunnan
Provincial Key Laboratory of Forensic Science, Yunnan Police College, Kunming 650223, P. R. China
| | - Ye-Ping Li
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Xiao Geng
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - LiJia Zhao
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Mei He
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Lin Du
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Qi-Hua Zhao
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education; Yunnan Research & Development Center for Natural Products;
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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Dubskikh VA, Lysova AA, Samsonenko DG, Lavrov AN, Kovalenko KA, Dybtsev DN, Fedin VP. 3D Metal-Organic Frameworks Based on Co(II) and Bithiophendicarboxylate: Synthesis, Crystal Structures, Gas Adsorption, and Magnetic Properties. Molecules 2021; 26:molecules26051269. [PMID: 33652868 PMCID: PMC7956319 DOI: 10.3390/molecules26051269] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/17/2021] [Accepted: 02/23/2021] [Indexed: 12/18/2022] Open
Abstract
Three new 3D metal-organic porous frameworks based on Co(II) and 2,2′-bithiophen-5,5′-dicarboxylate (btdc2−) [Co3(btdc)3(bpy)2]·4DMF, 1; [Co3(btdc)3(pz)(dmf)2]·4DMF·1.5H2O, 2; [Co3(btdc)3(dmf)4]∙2DMF∙2H2O, 3 (bpy = 2,2′-bipyridyl, pz = pyrazine, dmf = N,N-dimethylformamide) were synthesized and structurally characterized. All compounds share the same trinuclear carboxylate building units {Co3(RCOO)6}, connected either by btdc2– ligands (1, 3) or by both btdc2– and pz bridging ligands (2). The permanent porosity of 1 was confirmed by N2, O2, CO, CO2, CH4 adsorption measurements at various temperatures (77 K, 273 K, 298 K), resulted in BET surface area 667 m2⋅g−1 and promising gas separation performance with selectivity factors up to 35.7 for CO2/N2, 45.4 for CO2/O2, 20.8 for CO2/CO, and 4.8 for CO2/CH4. The molar magnetic susceptibilities χp(T) were measured for 1 and 2 in the temperature range 1.77–330 K at magnetic fields up to 10 kOe. The room-temperature values of the effective magnetic moments for compounds 1 and 2 are μeff (300 K) ≈ 4.93 μB. The obtained results confirm the mainly paramagnetic nature of both compounds with some antiferromagnetic interactions at low-temperatures T < 20 K in 2 between the Co(II) cations separated by short pz linkers. Similar conclusions were also derived from the field-depending magnetization data of 1 and 2.
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9
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Chakraborty G, Park IH, Medishetty R, Vittal JJ. Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications. Chem Rev 2021; 121:3751-3891. [PMID: 33630582 DOI: 10.1021/acs.chemrev.0c01049] [Citation(s) in RCA: 265] [Impact Index Per Article: 88.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gouri Chakraborty
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - In-Hyeok Park
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, South Korea
| | | | - Jagadese J. Vittal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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10
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Kharwar AK, Konar S. Exchange coupled Co(ii) based layered and porous metal-organic frameworks: structural diversity, gas adsorption, and magnetic properties. Dalton Trans 2020; 49:4012-4021. [PMID: 32154532 DOI: 10.1039/d0dt00211a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new Co(ii) based metal-organic frameworks (MOFs) ({[Co3(L)(TDCA)3(DMF)2]n·2nCH3CN}) (1), ({[Co3(L)2(BDCA)3]n·2nCH3CN}) (2), {[Co2(L)2(CA)2]n·4nCH3CN} (3) and {[Co2(L)(OBBA)2]n·3nCH3CN} (4) are synthesized, where L is [4'-(4-methoxyphenyl)-4,2':6',4''-terpyridine], a V-shaped flexible neutral spacer, and the four dicarboxylates are TDCA = thiophene 2,5-dicarboxylic acid, BDCA = benzene 1,4-dicarboxylic acid, CA = (1R,3S)-(+)-camphoric acid and OBBA = 4,4'-oxybisbenzoic acid. Structural analysis reveals that 1 and 2 are two dimensional (2D) layered structures having interesting sql and hxl topologies respectively with trinuclear SBUs (secondary building units). Compound 3 has a 3D structure, whereas 4 has a 2-fold interpenetrated 3D packing structure with a paddlewheel dinuclear SBU and both have pcu topology. Magnetic investigation revealed that 1, 3 and 4 show dominant antiferromagnetic behavior, while 2 shows ferromagnetic interaction at very low temperature. Interestingly 4 shows a sharp decrease in the χMT value from room temperature and this may be because of the direct Co(ii)Co(ii) interaction. Gas sorption studies reveal that 1, 2 and 3 show surface areas of 11.8 m2 g-1, 8.3 m2 g-1 and 28.5 m2 g-1 respectively and better adsorption behavior for CO2 over CH4, whereas 4 is nonporous in nature due to its 2-fold interpenetrated structure.
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Affiliation(s)
- Ajit Kumar Kharwar
- Department of Chemistry, Indian Institute of Science Education and Research, (IISER), Bhopal By-pass Road, Bhauri, Bhopal-462066, India.
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research, (IISER), Bhopal By-pass Road, Bhauri, Bhopal-462066, India.
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11
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Wei XQ, Shao D, Xue CL, Qu XY, Chai J, Li JQ, Du YE, Chen YQ. Field-induced slow magnetic relaxation in two interpenetrated cobalt( ii) metal–organic framework isomers. CrystEngComm 2020. [DOI: 10.1039/d0ce00979b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two interpenetrated cobalt(ii) metal–organic framework (MOF) isomers were successfully synthesized and magnetically characterized. These compounds are the first example of MOF isomers showing field-induced single-ion magnet behavior.
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Affiliation(s)
- Xiao-Qin Wei
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Cai-Long Xue
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
| | - Xing-Yu Qu
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
| | - Jie Chai
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
| | - Jian-Qing Li
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
| | - Yi-En Du
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
| | - Yong-Qiang Chen
- Department of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong
- China
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