1
|
Wang Y, Fu P, Takatsu H, Tassel C, Hayashi N, Cao J, Bataille T, Koo HJ, Ouyang Z, Whangbo MH, Kageyama H, Lu H. Construction of Ideal One-Dimensional Spin Chains by Topochemical Dehydration/Rehydration Route. J Am Chem Soc 2024; 146:8320-8326. [PMID: 38489763 DOI: 10.1021/jacs.3c13902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
One-dimensional (1D) Heisenberg antiferromagnets are of great interest due to their intriguing quantum phenomena. However, the experimental realization of such systems with large spin S remains challenging because even weak interchain interactions induce long-range ordering. In this study, we present an ideal 1D S = 5/2 spin chain antiferromagnet achieved through a multistep topochemical route involving dehydration and rehydration. By desorbing three water molecules from (2,2'-bpy)FeF3(H2O)·2H2O (2,2'-bpy = 2,2'-bipyridyl) at 150 °C and then intercalating two water molecules at room temperature (giving (2,2'-bpy)FeF3·2H2O 1), the initially isolated FeF3ON2 octahedra combine to form corner-sharing FeF4N2 octahedral chains, which are effectively separated by organic and added water molecules. Mössbauer spectroscopy reveals significant dynamical fluctuations down to 2.7 K, despite the presence of strong intrachain interactions. Moreover, results from electron spin resonance (ESR) and heat capacity measurements indicate the absence of long-range order down to 0.5 K. This controlled topochemical dehydration/rehydration approach is further extended to (2,2'-bpy)CrF3·2H2O with S = 3/2 1D chains, thus opening the possibility of obtaining other low-dimensional spin lattices.
Collapse
Affiliation(s)
- Yanhong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Peng Fu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hiroshi Takatsu
- Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Cédric Tassel
- Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Naoaki Hayashi
- Research Institute for Production Development, Shimogamo, Sakyo, Kyoto 606-0805, Japan
| | - Jiaojiao Cao
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Thierry Bataille
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS, UBL, Ecole Nationale Supérieure de Chimie de Rennes, 11, allée de Beaulieu, Rennes F-35708, France
| | - Hyun-Joo Koo
- Department of Chemistry and Research Institute for Basic Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Zhongwen Ouyang
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Myung-Hwan Whangbo
- Department of Chemistry and Research Institute for Basic Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Hiroshi Kageyama
- Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Hongcheng Lu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan 430074, China
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| |
Collapse
|
2
|
Pitcairn J, Iliceto A, Cañadillas-Delgado L, Fabelo O, Liu C, Balz C, Weilhard A, Argent SP, Morris AJ, Cliffe MJ. Low-Dimensional Metal-Organic Magnets as a Route toward the S = 2 Haldane Phase. J Am Chem Soc 2023; 145:1783-1792. [PMID: 36626185 PMCID: PMC9881000 DOI: 10.1021/jacs.2c10916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Metal-organic magnets (MOMs), modular magnetic materials where metal atoms are connected by organic linkers, are promising candidates for next-generation quantum technologies. MOMs readily form low-dimensional structures and so are ideal systems to realize physical examples of key quantum models, including the Haldane phase, where a topological excitation gap occurs in integer-spin antiferromagnetic (AFM) chains. Thus, far the Haldane phase has only been identified for S = 1, with S ≥ 2 still unrealized because the larger spin imposes more stringent requirements on the magnetic interactions. Here, we report the structure and magnetic properties of CrCl2(pym) (pym = pyrimidine), a new quasi-1D S = 2 AFM MOM. We show, using X-ray and neutron diffraction, bulk property measurements, density-functional theory calculations, and inelastic neutron spectroscopy (INS), that CrCl2(pym) consists of AFM CrCl2 spin chains (J1 = -1.13(4) meV) which are weakly ferromagnetically coupled through bridging pym (J2 = 0.10(2) meV), with easy-axis anisotropy (D = -0.15(3) meV). We find that, although small compared to J1, these additional interactions are sufficient to prevent observation of the Haldane phase in this material. Nevertheless, the proximity to the Haldane phase together with the modularity of MOMs suggests that layered Cr(II) MOMs are a promising family to search for the elusive S = 2 Haldane phase.
Collapse
Affiliation(s)
- Jem Pitcairn
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
| | - Andrea Iliceto
- School
of Metallurgy and Materials, University
of Birmingham, Elms Road,
Edgbaston, Birmingham B15
2TT, United Kingdom
| | | | - Oscar Fabelo
- Institut
Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble, France
| | - Cheng Liu
- Cavendish
Laboratory, Department of Physics, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Christian Balz
- ISIS
Neutron and Muon Source, STFC Rutherford
Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, United Kingdom
| | - Andreas Weilhard
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
| | - Stephen P. Argent
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
| | - Andrew J. Morris
- School
of Metallurgy and Materials, University
of Birmingham, Elms Road,
Edgbaston, Birmingham B15
2TT, United Kingdom
| | - Matthew J. Cliffe
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom,
| |
Collapse
|
3
|
Liu M, Ouyang Z, Liu X, Cao J, Xiao T, Xia Z, Wang Z. Structure and Magnetism of an Ideal One-Dimensional Chain Antiferromagnet [C 2NH 8] 3[Fe(SO 4) 3] with a Large Spin of S = 5/2. Inorg Chem 2022; 61:15045-15050. [PMID: 36099445 DOI: 10.1021/acs.inorgchem.2c02001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Isolated large-spin Heisenberg antiferromagnetic uniform chain is quite rare. Here, we have successfully synthesized an ideal one-dimensional (1D) S = 5/2 linear-chain antiferromagnet [C2NH8]3[Fe(SO4)3], which crystallizes in a trigonal lattice with the space group R3c. A broad maximum at Tmax = 18 K is observed in the magnetic susceptibility curve. Notably, no long-range magnetic ordering is observed down to 2 K even if the material has a large Curie-Weiss temperature of θCW = -25.5 K. High-field magnetization at 2 K shows a linear increase until saturation at 30 T, and a high-field electron spin resonance (ESR) reveals the absence of a zero-field spin gap. The intrachain interaction J and interchain interaction J' are determined. Quite a small ratio of J'/J < 2.5 × 10-3 suggests that [C2NH8]3[Fe(SO4)3] behaves as an ideal 1D uniform linear-chain antiferromagnet, in which the magnetic ordering is prevented by the extremely small interchain interaction and quantum fluctuation even for a classical spin of S = 5/2.
Collapse
Affiliation(s)
- Mingyang Liu
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhongwen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaochen Liu
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jiaojiao Cao
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Tongtong Xiao
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhengcai Xia
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| |
Collapse
|
4
|
Yamashita M. Next Generation Multifunctional Nano-Science of Advanced Metal Complexes with Quantum Effect and Nonlinearity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200257] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| |
Collapse
|
5
|
Jolicoeur T, Golinelli O. Physics of integer-spin antiferromagnetic chains: Haldane gaps and edge states. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
6
|
Order-disorder structural phase transition and magnetocaloric effect in organic-inorganic halide hybrid (C2H5NH3)2CoCl4. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2017.10.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
Gostynski R, Conradie J, Erasmus E. Significance of the electron-density of molecular fragments on the properties of manganese(iii) β-diketonato complexes: an XPS and DFT study. RSC Adv 2017. [DOI: 10.1039/c7ra04921h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The group electronegativity of the R-groups of the ligand influences the XPS binding energies and the amount of charge transferred in the Mn 2p3/2 photoelectron lines. DFT studies illustrated different Jahn–Teller elongation bond stretch isomers.
Collapse
Affiliation(s)
- Roxanne Gostynski
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
| | - Jeanet Conradie
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
| | - Elizabeth Erasmus
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
| |
Collapse
|
8
|
Xiang H, Tang Y, Zhang S, He Z. Intra-chain superexchange couplings in quasi-1D 3d transition-metal magnetic compounds. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:276003. [PMID: 27213502 DOI: 10.1088/0953-8984/28/27/276003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The electronic structure and magnetic properties of the quasi-1D transition-metal borates PbMBO4 (M = Ti, V, Cr, Mn, Fe, Co) have been investigated by density functional theory, including electronic correlation. The results evidence PbCrBO4 and PbFeBO4 as antiferromagnetic (AFM) semiconductors (intra-chain AFM and inter-chain FM) and PbMnBO4 as a ferromagnetic (FM) semiconductor (both intra- and inter-chain FM) in accordance with experimental observations. For non-synthesized PbTiBO4, PbVBO4, and PbCoBO4, the ground-state magnetic structures are paramagnetic, FM, and paramagnetic, respectively. In this series of compounds, there are two kinds of superexchange couplings dominating their magnetic properties, i.e. the direction M-M delocalization superexchange and indirect M-O-M correlation superexchange. For PbMBO4 with M (3+) d (n) , n ⩽ 3 (M = V and Cr), the main intra-chain spin coupling is the M-M t 2g-t 2g direct delocalization superexchange, while for PbMBO4 with M (3+) d (n) , n > 3 (M = Mn and Fe), the main intra-chain spin coupling is the near 90° M-O-M e g-p-e g indirect correlation superexchange.
Collapse
Affiliation(s)
- Hongping Xiang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China
| | | | | | | |
Collapse
|
9
|
Čižmár E, Risset ON, Wang T, Botko M, Ahir AR, Andrus MJ, Park JH, Abboud KA, Talham DR, Meisel MW, Brown SE. Antiferromagnetic ordering in MnF(salen). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:236003. [PMID: 27160792 DOI: 10.1088/0953-8984/28/23/236003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Antiferromagnetic order at [Formula: see text] K has been identified in Mn(III)F(salen), salen = H14C16N2O2, an S = 2 linear-chain system. Using single crystals, specific heat studies performed in magnetic fields up to 9 T revealed the presence of a field-independent cusp at the same temperature where (1)H NMR studies conducted at 42 MHz observed dramatic changes in the spin-lattice relaxation time, T 1, and in the linewidths. Low-field (less than 0.1 T) magnetic susceptibility studies of single crystals and randomly-arranged microcrystalline samples reveal subtle features associated with the transition.
Collapse
Affiliation(s)
- Erik Čižmár
- Department of Condensed Matter Physics, P. J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Zhang S, Xiang H, Guo W, Tang Y, Cui M, He Z. Synthesis, characterization, and mechanism analysis of S = 2 quasi-one-dimensional ferromagnetic semiconductor Pb2Mn(VO4)2(OH). Dalton Trans 2016; 45:7022-7. [PMID: 26988398 DOI: 10.1039/c6dt00412a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A brackebuschite-type compound Pb2Mn(VO4)2(OH) was synthesized by a hydrothermal method. Single crystal X-ray diffraction reveals that Pb2Mn(VO4)2(OH) crystallizes in the space group P21/m, with the structure built of single [010] chains of edge-shared MnO6 octahedra bridged by VO4-PbO6 groups along a and c axes, as a result forming a very large inter-chain distance of about 7.67 Å. The magnetic and optical measurements indicate that Pb2Mn(VO4)2(OH) is an S = 2 quasi-one-dimensional ferromagnetic semiconductor, with a very small specific value of intra- and inter-chain exchange coupling Jintra/Jinter = 10(-3), and a band gap of 1.72 eV. The electronic structure calculations indicate that a 90° Mn-O-Mn dpσ-dpσ correlation superexchange dominates the intra-chain ferromagnetic coupling in Pb2Mn(VO4)2(OH).
Collapse
Affiliation(s)
- Suyun Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Hongping Xiang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Wenbin Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| | - Yingying Tang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. and University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Meiyan Cui
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. and University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhangzhen He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
| |
Collapse
|
11
|
Wang X, Hu P, Li L, Sutter JP. [(Cu-Radical)2-Ln]: Structure and Magnetic Properties of a Hetero-tri-spin Chain of Rings (Ln = YIII, GdIII, TbIII, DyIII). Inorg Chem 2015; 54:9664-9. [DOI: 10.1021/acs.inorgchem.5b01761] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiufeng Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials
Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material
Chemistry, Nankai University, Tianjin 300071, China
| | - Peng Hu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials
Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material
Chemistry, Nankai University, Tianjin 300071, China
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials
Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material
Chemistry, Nankai University, Tianjin 300071, China
| | - Jean-Pascal Sutter
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, F-31077 Toulouse, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| |
Collapse
|
12
|
Lu H, Yamamoto T, Yoshimune W, Hayashi N, Kobayashi Y, Ajiro Y, Kageyama H. A Nearly Ideal One-Dimensional S = 5/2 Antiferromagnet FeF3(4,4'-bpy) (4,4'-bpy =4,4'-bipyridyl) with Strong Intrachain Interactions. J Am Chem Soc 2015. [PMID: 26200135 DOI: 10.1021/jacs.5b06120] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An ideal one-dimensional (1D) magnet is expected to show exotic quantum phenomena. For compounds with larger S (S = 3/2, 2, 5/2, ...), however, a small interchain interaction J' tends to drive a conventional long-range ordered (LRO) state. Here, a new layered structure of FeF3(4,4'-bpy) (4,4'-bpy = 4,4'-bipyridyl) with novel S = 5/2 (Fe(3+)) chains has been hydrothermally synthesized by using 4,4'-bpy to separate chains. The temperature-dependent susceptibility exhibits a broad maximum at high as 164 K, suggesting a fairly strong Fe-F-Fe intrachain interaction J. However, no anomaly associated with a LRO is seen in both magnetic susceptibility and specific heat even down to 2 K. This indicates an extremely small J' with J'/J < 3.2 × 10(-5), making this new material a nearly ideal 1D antiferromagnet. Mössbauer spectroscopy at 2.7 K reveals a critical slowing down of the 1D fluctuations toward a possible LRO at lower temperatures.
Collapse
Affiliation(s)
- Hongcheng Lu
- †Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Takafumi Yamamoto
- †Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Wataru Yoshimune
- †Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Naoaki Hayashi
- ‡Research Institute for Production Development, Shimogamo, Sakyo, Kyoto 606-0805, Japan.,§Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-ushinomiya, Sakyo, Kyoto 606-8501, Japan
| | - Yoji Kobayashi
- †Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Yoshitami Ajiro
- †Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
| | - Hiroshi Kageyama
- †Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan.,§Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-ushinomiya, Sakyo, Kyoto 606-8501, Japan.,∥CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
13
|
Birk T, Pedersen KS, Piligkos S, Thuesen CA, Weihe H, Bendix J. Magnetic Properties of a Manganese(III) Chain with Monoatomic Bridges: catena-MnF(salen). Inorg Chem 2011; 50:5312-4. [DOI: 10.1021/ic2002699] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Torben Birk
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Kasper S. Pedersen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Stergios Piligkos
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Christian Aa. Thuesen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Högni Weihe
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| |
Collapse
|
14
|
|
15
|
Matsushita Y, Ueda Y. Structure and Physical Properties of 1D Magnetic Chalcogenide, Jamesonite (FePb4Sb6S14). Inorg Chem 2003; 42:7830-8. [PMID: 14632498 DOI: 10.1021/ic034634t] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Monoclinic FePb(4)Sb(6)S(14) phase, jamesonite, which is a candidate material as a S = 2 Haldane compound, has been synthesized by the direct reaction of elements under dry conditions with sealed evacuated quartz tubes. The congruent melting point was determined at 592 degrees C by DTA measurements. Shiny metallic gray needle crystals grow on the surface of bulk heated at 550 degrees C. The elongated direction of each needle crystal is parallel to the c-axis. The crystal structure refinement (P2(1)/a, a = 15.750(6) A, b = 19.125(3) A, c = 4.030(4) A, beta = 91.68(8) degrees, V = 1213(1) A(3), Z = 2, D(c) = 5.651 g/cm(3), R(1) = 3.16%) reveals the presence of two rod substructures elongated parallel to the c-axis. One is the lozenge-shaped Bi(2)Te(3)-type (or called SnS archetype), [Pb(4)Sb(6)S(13)]. The other is the novel single magnetic one-dimensional (1D) straight chain, [FeS(6)]. This compound shows intrinsic semiconductor behavior in the electric conductivity measurements. The optical band gap, 0.48 eV, is estimated by near-IR diffuse reflectance measurements. In the magnetic susceptibility measurements, this compound shows 1D-Heisenberg antiferromagnetic behavior with a broad peak at approximately 33.5 K, where Fe(2+) takes the high-spin state, t(2g)(4)e(g)(2). A possibility for the S = 2 Haldane system is discussed.
Collapse
Affiliation(s)
- Yoshitaka Matsushita
- Materials Design and Characterization Laboratory, Institute for Solid State Physics (ISSP), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 Japan.
| | | |
Collapse
|
16
|
Krzystek J, Yeagle GJ, Park JH, Britt RD, Meisel MW, Brunel LC, Telser J. High-frequency and -field EPR spectroscopy of tris(2,4-pentanedionato)manganese(III): investigation of solid-state versus solution Jahn-Teller effects. Inorg Chem 2003; 42:4610-8. [PMID: 12870951 DOI: 10.1021/ic020712l] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
High-frequency and -field electron paramagnetic resonance (HFEPR) spectroscopy of a classical coordination complex, Mn(acac)(3) (Hacac = 2,4-pentanedione), has been performed on both solid powder and frozen solution (in CH(2)Cl(2)/toluene, 3:2 v/v) samples. Parallel mode detection X-band EPR spectra exhibiting resolved (55)Mn hyperfine coupling were additionally obtained for frozen solutions. Magnetic susceptibility and field-dependent magnetization measurements were also made on powder samples. Analysis of the entire EPR data set for the frozen solution allowed extraction of the relevant spin Hamiltonian parameters: D = -4.52(2); |E| = 0.25(2) cm(-1); g(iso) = 1.99(1). The somewhat lower quality solid-state HFEPR data and the magnetic measurements confirmed these parameters. These parameters are compared to those for other complexes of Mn(III) and to previous studies on Mn(acac)(3) using X-ray crystallography, solution electronic absorption spectroscopy, and powder magnetic susceptibility. Crystal structures have been reported for Mn(acac)(3) and show tetragonal distortion, as expected for this Jahn-Teller ion (Mn(3+), 3d(4)). However, in one case, the molecule exhibits axial compression and, in another, axial elongation. The current HFEPR studies clearly show the negative sign of D, which corresponds to an axial (tetragonal) elongation in frozen solution. The correspondence among solution and solid-state HFEPR data, solid-state magnetic measurements, and an HFEPR study by others on a related complex indicates that the form of Mn(acac)(3) studied here exhibits axial elongation in all cases. Such tetragonal elongation has been found for Mn(3+) and Cr(2+) complexes with homoleptic pseudooctahedral geometry as well as for Mn(3+) in square pyramidal geometry. This taken together with the results obtained here for Mn(acac)(3) in frozen solution indicates that axial elongation could be considered the "natural" form of Jahn-Teller distortion for octahedral high-spin 3d(4) ions. The previous electronic absorption data together with current HFEPR and magnetic data allow estimation of ligand-field parameters for Mn(acac)(3).
Collapse
Affiliation(s)
- J Krzystek
- Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | | | | | | | | | | | | |
Collapse
|
17
|
Panja A, Shaikh N, Vojtíšek P, Gao S, Banerjee P. Synthesis, crystal structures and magnetic properties of 1D polymeric [Mniii(salen)N3] and [Mniii(salen)Ag(CN)2] complexes. NEW J CHEM 2002. [DOI: 10.1039/b200384h] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
|
19
|
|