1
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Nielsen HH, Vilariño P, Rodríguez G, Trepard F, Roubeau O, Aromí G, Aguilà D. Self-assembly of a supramolecular spin-crossover tetrahedron. Dalton Trans 2024; 53:9792-9797. [PMID: 38787740 DOI: 10.1039/d4dt00578c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
A new mononuclear iron(II) SCO compound featuring H-bonding donor and acceptor units has been synthesized and exploited to produce a purely supramolecular switchable [Fe4] tetrahedron. Magnetic and crystallographic measurements evidence a singular magnetic behavior for each of the four Fe(II) centers of the generated architecture and underscore the potential of this strategy to develop novel SCO materials.
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Affiliation(s)
- Hannah H Nielsen
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
- Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - Pol Vilariño
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
| | - Gemma Rodríguez
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
| | - Florian Trepard
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
| | - Olivier Roubeau
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain.
| | - Guillem Aromí
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
- Institute of Nanoscience and Nanotechnology, University of Barcelona (IN2UB), 08007 Barcelona, Spain
| | - David Aguilà
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
- Institute of Nanoscience and Nanotechnology, University of Barcelona (IN2UB), 08007 Barcelona, Spain
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2
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Barrios LA, Teat SJ, Roubeau O, Aromí G. A supramolecular helicate with two independent Fe(II) switchable centres and a [Fe(anilate) 3] 3- guest. Chem Commun (Camb) 2023; 59:10628-10631. [PMID: 37578490 DOI: 10.1039/d3cc02278a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
A biphenyl-spaced bis-pyrazolylpyridine ligand interacts with ferrous ions to engender a dimetallic helical coordination cage that encapsulates an Fe3+ tris-anilate complex. The host-guest interaction breaks the symmetry of the Fe2+ centers causing a differential spin crossover behavior in them that can be followed in great detail crystallographically.
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Affiliation(s)
- Leoní A Barrios
- Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Universitat de Barcelona, Barcelona, Spain
- Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona, Spain.
| | - Simon J Teat
- Advanced Light Source, Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
| | - Olivier Roubeau
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
- Departamento de Física de la Materia Condensada, Universidad de Zaragoza, Zaragoza, Spain
| | - Guillem Aromí
- Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Universitat de Barcelona, Barcelona, Spain
- Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona, Spain.
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3
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Jordan DN, Straßburg PG, Woschko D, Carrella LM, Cuignet LP, Eickmeier K, Dronskowski R, Garcia Y, Rentschler E, Janiak C. Interpenetration Phenomena via Anion Template Effects in Fe(II) and Co(II) Coordination Networks with a Bis-(1,2,4-triazole) Ligand. Polymers (Basel) 2023; 15:3286. [PMID: 37571180 PMCID: PMC10422438 DOI: 10.3390/polym15153286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Seven new coordination networks, [Fe(tbbt)3](BF4)2 (1), [Co(tbbt)3](BF4)2 (2), [Fe(tbbt)3](ClO4)2 (3), [Co(tbbt)3](ClO4)2 (4), [Fe(NCS)2(tbbt)2] (5), [Co(NCS)2(tbbt)2] (6), and [Fe(H2O)2(tbbt)2]Br2·2H2O (7), were synthesized with the linker 1,1'-(trans-2-butene-1,4-diyl)bis-1,2,4-triazole (tbbt) and structurally investigated. The structure of complexes 1-4 is composed of three interpenetrating, symmetry-related 3D networks. Each individual 3D network forms a primitive, nearly cubic lattice (pcu) with BF4- or ClO4- anions present in the interstitial spaces. The structure of compounds 5 and 6 is composed of two-dimensional sql layers, which are parallel to each other in the AB stacking type. These layers are interpenetrated by one-dimensional chains, both having the same formula unit, [M(NCS)2(tbbt)2] (M = Fe, Co). The structure of compound 7 consists of parallel, two-dimensional sql layers in the ABCD stacking type. The interpenetration in 1-6 is not controlled by π-π-interactions between the triazole rings or C=C bonds, as could have been expected, but by (triazole)C-H⋯F4B, C-H⋯O4Cl, and C-H⋯SCN anion hydrogen bonds, which suggests a template effect of the respective non-coordinated or coordinated anion for the interpenetration. In 7, the (triazole)C-H⋯Br anion interactions are supplemented by O-H⋯O and O-H⋯Br hydrogen bonds involving the aqua ligand and crystal water molecules. It is evident that the coordinated and non-coordinated anions play an essential role in the formation of the networks and guide the interpenetration. All iron(II) coordination networks are colorless, off-white to yellow-orange, and have the metal ions in the high-spin state down to 77 K. Compound 5 stays in the high spin state even at temperatures down to 10 K.
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Affiliation(s)
- Dustin N. Jordan
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität, D-40204 Düsseldorf, Germany; (D.N.J.); (P.G.S.); (D.W.); (L.P.C.)
| | - Patrick G. Straßburg
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität, D-40204 Düsseldorf, Germany; (D.N.J.); (P.G.S.); (D.W.); (L.P.C.)
| | - Dennis Woschko
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität, D-40204 Düsseldorf, Germany; (D.N.J.); (P.G.S.); (D.W.); (L.P.C.)
| | - Luca M. Carrella
- Department of Chemistry, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany; (L.M.C.); (E.R.)
| | - Laure P. Cuignet
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität, D-40204 Düsseldorf, Germany; (D.N.J.); (P.G.S.); (D.W.); (L.P.C.)
- Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN/MOST), Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium;
| | - Katharina Eickmeier
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52056 Aachen, Germany; (K.E.); (R.D.)
| | - Richard Dronskowski
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52056 Aachen, Germany; (K.E.); (R.D.)
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN/MOST), Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium;
| | - Eva Rentschler
- Department of Chemistry, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany; (L.M.C.); (E.R.)
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität, D-40204 Düsseldorf, Germany; (D.N.J.); (P.G.S.); (D.W.); (L.P.C.)
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4
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Sundaresan S, Brooker S. Solution Spin Crossover Versus Speciation Effects: A Cautionary Tale. Inorg Chem 2023. [PMID: 37482662 DOI: 10.1021/acs.inorgchem.3c00186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Two acyclic tetradentate Schiff base ligands, HLX-OH (X = H and Br), were synthesised by 2:1 condensation of either 2-pyridinecarboxaldehyde or 5-bromo-2-pyridinecarboxaldehyde and 1,3-diamino-2-propanol and then used to prepare six mononuclear complexes, [FeII(HLX-OH)(NCE)2], with three different NCE co-ligands (E = BH3, Se, and S). The apparent solution spin crossover switching temperature, T1/2, of these 6 complexes, determined by Evans method NMR studies, is tuned by several factors: (a) substituent X present at the 5 position of the pyridine ring of the ligand, (b) E present in the NCE co-ligand, (c) solvent employed (P'), and (d) potentially also by speciation effects. In CD3CN, for the pair of NCE = NCBH3 complexes, when X = H, the complex is practically LS (extrapolated T1/2 ∼624 K), whereas when X = Br, it is far lower (373 K), which implies a higher field strength when X = H than when it is Br. The same trend, X = H results in a higher apparent T1/2 than X = Br, is seen for the other two pairs of complexes, with E = Se (429 > 351 K, ΔT1/2 = 78 K) or S (361 > 342 K, ΔT1/2 = 19 K). For the family of three X = Br complexes, the change of E from BH3 (373 K) to Se (351 K) to S (342 K) leads to an overall ΔT1/2(apparent) = 31 K, whereas the decreases are far more pronounced in the X = H family (BH3 ∼624 > Se 429 > S 361 K). Changing the solvent used from CD3CN to (CD3)2CO and CD3NO2, for [FeII(HLBr-OH)(NCE)2] with either E = BH3 or S, revealed excellent, and very similar, positive linear correlations (R2 = 0.99) of increasing solvent polarity index P' (from 5 to 7) with increasing apparent T1/2 of the complex (E = BH3 gave T1/2 300 < 373 < 451 K , ΔT1/2 = 151 K; E = S gave T1/2 288 < 342 < 427 K, ΔT1/2 = 147 K). Several other solvent parameters were also correlated with the apparent T1/2 of these complexes (R2 = 0.74-0.96). Excellent linear correlations (R2 = 0.99) are also obtained with the coordination ability (aTM) of the three NCE co-ligands with the apparent T1/2 in both families of compounds, [FeII(HLX-OH)(NCE)2] where X = H or Br. The 15N NMR chemical shifts of the nitrogen atom in the three NCE co-ligands (direct measurement) show modest correlations (R2 = 0.74 for LH-OH family and 0.80 for LBr-OH family) with the apparent T1/2 values of the corresponding complexes.
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Affiliation(s)
- Sriram Sundaresan
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - Sally Brooker
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
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5
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Chernyshov D, Dyadkin V, Törnroos KW. Preliminary observations of the interplay of radiation damage with spin crossover. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2022; 78:392-396. [PMID: 35695113 DOI: 10.1107/s205252062200467x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
Intense synchrotron radiation makes time-resolved structural experiments with increasingly finer time sampling possible. On the other hand, radiation heating, radiation-induced volume change and structural disorder become more frequent. Temperature, volume change and disorder are known to be coupled with equilibrium in molecular spin complexes, balancing between two or more spin state configurations. Combining single-crystal diffraction and synchrotron radiation it is illustrated how the radiation damage and associated effects can affect the spin crossover process and may serve as yet another tool to further manipulate the spin crossover properties.
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Affiliation(s)
- Dmitry Chernyshov
- Swiss-Norwegian BeamLines at the European Synchrotron Radiation Facility, 38000 Grenoble, France
| | - Vadim Dyadkin
- Swiss-Norwegian BeamLines at the European Synchrotron Radiation Facility, 38000 Grenoble, France
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6
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Liu JH, Guo XQ, Wang ZC, Cai LX, Zhou LP, Tian CB, Sun QF. Cation modulated spin state and near room temperature transition within a family of compounds containing the same [FeL 2] 2- center. Dalton Trans 2022; 51:3894-3901. [PMID: 35167636 DOI: 10.1039/d1dt04254h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin-crossover (SCO) active compounds have received much attention due to their potential application in molecular devices. Herein, a family of solvent-free FeII compounds, formulated as (A)2[FeL2], (H2L = pyridine-2,6-bi-tetrazolate, A = (Me)4N+1, Et2NH2+2, iPr2NH2+3 and iPrNH3+4), were synthesized and characterized. Single-crystal X-ray diffraction studies reveal that 1-4 are all supramolecular frameworks containing the same [FeL2]2- center, which is arranged into two packing modes via inter-molecular interactions, that is, a 3D architecture in 1 and 1D chain in 2-4. The spin states of 1-4 at different temperatures are assigned on the basis of the single-crystal X-ray diffraction data. Solid state magnetic investigations indicate that 1 and 4 exhibit a low spin state (below 350 K) and high spin state (2-400 K), respectively. 2 and 3 display clear SCO behavior in the measured temperature, but with different profiles and critical temperatures. 2 undergoes a complete gradual SCO with a critical temperature of T1/2 = 260 K. 3 has an abrupt near room temperature transition between T1/2 cooling = 278 K and T1/2 warming = 286, centered at 282 K (9 °C). This study reveals the importance of organic cations in the modulation of SCO behavior and offers a new insight for the design of SCO compounds with near room temperature spin transitions.
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Affiliation(s)
- Jia-Hui Liu
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Xiao-Qing Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Zi-Cheng Wang
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Li-Xuan Cai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Chong-Bin Tian
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Qing-Fu Sun
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
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7
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Sánchez‐Molina I, Moneo‐Corcuera A, Nieto‐Castro D, Benet‐Buchholz J, Galán‐Mascarós JR. Solvent Effect on the Spin State of an Iron(II)‐Triazole Trimer. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202000765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Irene Sánchez‐Molina
- The Barcelona Institute of Science and Technology (BIST) Institute of Chemical Research of Catalonia (ICIQ) Av. Paisos Catalans, 16. 43007 Tarragona Spain
| | - Andrea Moneo‐Corcuera
- The Barcelona Institute of Science and Technology (BIST) Institute of Chemical Research of Catalonia (ICIQ) Av. Paisos Catalans, 16. 43007 Tarragona Spain
| | - David Nieto‐Castro
- The Barcelona Institute of Science and Technology (BIST) Institute of Chemical Research of Catalonia (ICIQ) Av. Paisos Catalans, 16. 43007 Tarragona Spain
| | - Jordi Benet‐Buchholz
- The Barcelona Institute of Science and Technology (BIST) Institute of Chemical Research of Catalonia (ICIQ) Av. Paisos Catalans, 16. 43007 Tarragona Spain
| | - José Ramón Galán‐Mascarós
- The Barcelona Institute of Science and Technology (BIST) Institute of Chemical Research of Catalonia (ICIQ) Av. Paisos Catalans, 16. 43007 Tarragona Spain
- ICREA Pg. Lluís Companys 23 08010 Barcelona Spain
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8
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Pan Y, Meng YS, Liu Q, Gao WQ, Liu CH, Liu T, Zhu YY. Construction of SCO-Active Fe(II) Mononuclear Complexes from the Thio-pybox Ligand. Inorg Chem 2020; 59:7398-7407. [PMID: 32401025 DOI: 10.1021/acs.inorgchem.9b03506] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of new spin-crossover complexes provides novel promising switching materials with significant potential at the molecular level. Ter-imine-type molecules represent one of the important classes of ligands in creating SCO-active complexes. Herein we report a family of mononuclear Fe(II) SCO-active compounds constructed from a new type of ter-imine ligand named the thio-pybox ligand (2,6-bis(4,4-dimethyl-4,5-dihydrothiazol-2-yl)pyridine, L1). Through the variation of counteranions, some cases display complete SCO and with T1/2 near ambient temperature. Among them, annealed [FeII(L1)2](ClO4)2 [1(ClO4)] shows T1/2↓ and T1/2↑ as 319 and 349 K, respectively. The wide thermal hysteresis of ΔT = 30 K originated from the weak interaction between complex cations and counteranions in the crystal lattice. Impressively, its high-spin population can be increased considerably by annealing at high temperature. The metastable high-spin phase is stable in the successive magnetic measurements and would gradually relax to its initial state with high population of low-spin configuration at ambient temperature. In acetonitrile-diluted solution, 1(ClO4) still maintains SCO with an estimated T1/2 at 240 K. Differential scanning calorimetry discloses the structural phase at around 355 K in the first heating process and the increase in the high-spin population concomitant with annealing was also corroborated by 57Fe Mössbauer measurements. Additionally, the influences on SCO by counteranion and ligand structure are investigated, which show that the fine tuning of complex structures can affect the behavior of the spin state significantly. Finally, magneto-structural correlation studies were performed on the structures of 1(ClO4) and its oxygen analogue at multiple temperatures. The analyses of some structural parameters, including terminal N···N donor separation, bite angle, patulous angle, and the root mean squared deviation indicate that the replacement of the oxygen atom with a sulfur atom can effectively improve the flexibility and release the steric strain and thus tune the SCO toward ambient temperature. Our research demonstrates the rational design of the ligand can lead to new SCO-active compounds with high performance.
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Affiliation(s)
- Yao Pan
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Qiang Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Wan-Qing Gao
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, China
| | - Chun-Hua Liu
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Yuan-Yuan Zhu
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, China.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
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9
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Sundaresan S, Kitchen JA, Brooker S. Hydrophobic tail length in spin crossover active iron( ii) complexes predictably tunes T½ in solution and enables surface immobilisation. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01478k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Linear correlation of the hydrophobic alkyl tail length R employed in [FeII(LH-OR)(NCBH3)2] with the spin crossover switching temperature is a very convenient method of predictably tuning the iron(ii) spin state.
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Affiliation(s)
- Sriram Sundaresan
- Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin 9054
- New Zealand
| | - Jonathan A. Kitchen
- School of Natural and Computational Sciences
- Massey University Auckland
- New Zealand
| | - Sally Brooker
- Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin 9054
- New Zealand
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10
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Garnier D, Mondal A, Li Y, Herson P, Chamoreau LM, Toupet L, Buron Le Cointe M, Moos E, Breher F, Lescouëzec R. Tetranuclear [FeII2FeIII2]2+ molecular switches: [FeII(bik)2(N–)2] spin-crossover complexes containing [FeIII(Tp)(CN)3]– metalloligands as N-donor. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Radoń M. Benchmarking quantum chemistry methods for spin-state energetics of iron complexes against quantitative experimental data. Phys Chem Chem Phys 2019; 21:4854-4870. [PMID: 30778468 DOI: 10.1039/c9cp00105k] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The accuracy of relative spin-state energetics predicted by selected quantum chemistry methods: coupled cluster theory at the CCSD(T) level, multiconfigurational perturbation theory (CASPT2, NEVPT2), multireference configuration interaction at the MRCISD+Q level, and a number of DFT methods, is quantitatively evaluated by comparison with the experimental data of four octahedral iron complexes. The available experimental data, either spin-forbidden transition energies or spin crossover enthalpies, are corrected for relevant environmental effects in order to derive the quantitative benchmark set of iron spin-state energetics. Comparison of theory predictions with the resulting reference data: (1) validates the high accuracy of the CCSD(T) method, particularly when based on Kohn-Sham orbitals, giving the maximum error below 2 kcal mol-1 and the mean absolute error (MAE) below 1 kcal mol-1; (2) corroborates the tendency of CASPT2 to systematically overstabilize higher-spin states by up to 5.5 kcal mol-1; (3) confirms that the latter problem is partly remedied by the recently proposed CASPT2/CC approach [Phung et al., J. Chem. Theory Comput., 2018, 14, 2446-2455]; (4) demonstrates that NEVPT2 performs worse than CASPT2, by giving errors up to 7 kcal mol-1; (5) shows that the accuracy of MRCISD+Q spin-state energetics strongly depends on the size-consistency correction: the Davidson-Silver and Pople corrections perform best (MAE < 3 kcal mol-1), whereas the standard Davidson correction is not recommended (MAE of 7 kcal mol-1). Only a few DFT methods (including the best performing ones identified in this study: B2PLYP-D3 and OPBE) are able to provide a balanced description of the spin-state energetics for all four studied iron complexes simultaneously, corroborating the non-universality problem of approximate density functionals.
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Affiliation(s)
- Mariusz Radoń
- Faculty of Chemistry, Jagiellonian University in Krakow, ul. Gronostajowa 2, 30-387 Kraków, Poland.
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12
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Vela S, Paulsen H. Deciphering crystal packing effects in the spin crossover of six [FeII(2-pic)3]Cl2 solvatomorphs. Dalton Trans 2019; 48:1237-1245. [DOI: 10.1039/c8dt04394a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Six isostructural solvatomorphs of the same Fe(ii) complex have been reported to display completely different SCO transitions due to tiny differences in their crystal environments. In this paper, we unravel the reasons.
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Affiliation(s)
- Sergi Vela
- Laboratoire de Chimie Quantique
- UMR 7111
- CNRS-Université de Strasbourg
- F-67000 Strasbourg
- France
| | - Hauke Paulsen
- Institut für Physik
- Universität zu Lübeck
- D-23562 Lübeck
- Germany
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13
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Gao WQ, Meng YS, Liu CH, Pan Y, Liu T, Zhu YY. Spin crossover and structural phase transition in homochiral and heterochiral Fe[(pybox)2]2+ complexes. Dalton Trans 2019; 48:6323-6327. [DOI: 10.1039/c8dt04893b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin crossover and structural phase transition were discovered in three pairs of homochiral and heterochiral [Fe(pybox)2]2+ diastereomers.
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Affiliation(s)
- Wan-Qing Gao
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Chun-Hua Liu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
| | - Yao Pan
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Yuan-Yuan Zhu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
- State Key Laboratory of Fine Chemicals
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14
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Yang FL, Chen X, Wu WH, Zhang JH, Zhao XM, Shi YH, Shen F. Spin switching in tris(8-aminoquinoline)iron(ii)(BPh 4) 2: quantitative guest-losing dependent spin crossover properties and single-crystal-to-single-crystal transformation. Dalton Trans 2018; 48:231-241. [PMID: 30516211 DOI: 10.1039/c8dt03584a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a derivative of 2-picolylamine, which contains rich protons favouring hydrogen bond formation to assemble a variety of valuable spin crossover (SCO) compounds, 8-aminoquinoline (aqin) will be a good candidate for constructing new mononuclear bistable state compounds. With the guidance of this view, two solvated compounds [Fe(aqin)3](BPh4)2·2(CH3CN) (1·2CH3CN) and [Fe(aqin)3](BPh4)2·1.5(CH3COCH3) (2·1.5CH3COCH3) were synthesized. The structural characterization and magnetic studies demonstrate that this strategy has been successful. Single-crystal diffraction reveals that both the mononuclear compounds have facial (fac-)-configuration cations, which form hydrogen bonds using -NH2 groups with solvent molecules (acetonitrile or acetone). Subsequent magnetic measurement shows the highly sensitive solvent-dependent occurrence of a spin transition above room temperature for both compounds. Interestingly, for compound 1·2CH3CN, in the successively repeated heating and cooling process, by monitoring the loss of solvent molecules by TGA, the shifting of the spin transition curve is found to be linearly dependent on the fraction of the residual solvent content. Additionally, the desolvated sample can re-solvate with CH3CN and recover the magnetic response reproducibly. Furthermore, after losing the acetonitrile molecules, the single-crystal-to-single-crystal transformation occurred to give 1.
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Affiliation(s)
- Feng-Lei Yang
- School of Chemistry and Material Science and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
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15
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16
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Vela S, Paulsen H. Cooperativity in Spin Crossover Systems. An Atomistic Perspective on the Devil's Staircase. Inorg Chem 2018; 57:9478-9488. [PMID: 30040398 DOI: 10.1021/acs.inorgchem.8b01463] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cooperativity is key in defining the shape (i.e., gradual, abrupt, or hysteretic) of thermally driven spin transitions in magnetic switches. Despite its importance, there is very little information on its atomistic origin, which hinders the rational design of materials displaying a bistability region (i.e., hysteresis). In this paper, we investigate the spin transition of two solvatomorphs of [Fe(2-pic)3]Cl2, an Fe(II)-complex displaying thermal spin crossover (SCO) from a low-spin (LS) to a high-spin (HS) state with either gradual or abrupt two-step character. To do it, we apply a novel computational protocol to study the cooperativity of SCO compounds from DFT calculations, which does not rely on a priori assumptions on the studied system. The distinct shape of the spin transition is successfully captured, and the atomistic origin of cooperativity is traced back to geometrical distortions of the Fe-N6 core in case of the solvatomorph exhibiting an abrupt transition. According to our calculations, HS and LS molecules contribute differently to cooperativity, which results in a complex energetic evolution of the spin transition that cannot be described by the common Slichter-Drickamer model. The present work opens new avenues for the study of cooperativity of SCO systems having a chemically oriented perspective and demonstrates that quantum chemistry calculations can discriminate the shape of a spin transition, while providing insight into the atomistic underlying factors that contribute to its cooperative behavior.
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Affiliation(s)
- Sergi Vela
- Laboratoire de Chimie Quantique, UMR 7111 , CNRS-Université de Strasbourg , 4 rue Blaise Pascal , F-67000 Strasbourg , France
| | - Hauke Paulsen
- Institut für Physik , Universität zu Lübeck , Ratzeburger Allee 160 , D-23562 Lübeck , Germany
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17
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Drahoš B, Trávníček Z. Spin crossover Fe(ii) complexes of a cross-bridged cyclam derivative. Dalton Trans 2018; 47:6134-6145. [PMID: 29667691 DOI: 10.1039/c8dt00414e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A cross-bridged cyclam derivative containing two 2-pyridylmethyl pendant arms (L = 4,11-bis((pyridin-2-yl)methyl)-1,4,8,11-tetraaza-bicyclo[6.6.2]hexadecane) was synthesized by dialkylation of the cross-bridged cyclam with 2-chloromethylpyridine. A series of Fe(ii) complexes with L and different counter-anions of the formulas [Fe(L)][FeCl4]·H2O (1·H2O), [Fe(L)]Cl2·4H2O (2·4H2O), [Fe(L)](BF4)2·0.5CH3CN (3·0.5CH3CN) and [Fe(L)](BPh4)2·CH3OH (4·CH3OH) was prepared and thoroughly characterized. In all the cases, the [Fe(L)]2+ cation adopts a cis-V configuration with a distorted octahedral geometry, and with the FeN6 donor set. The magnetic measurements within the temperature interval of 5-400 K revealed the spin crossover (SCO) behaviour of all the complexes with the transition temperature T1/2 increasing with the counter anion in the order BF4- (3) < [FeCl4]2- (1) < BPh4- (4). However, the SCO process was complete in the case of compound 3 only, with T1/2 = 177 K, which proceeded after removal of co-crystallized CH3CN molecules accompanied by a change of the crystallographic phase. The SCO behaviour of 3 was also confirmed by a single crystal X-ray analysis providing the average Fe-N distances of 2.086 Å at 120 K and 2.197 Å at 293 K typical of low-spin, and high-spin FeII complexes, respectively. The obtained results clearly showed that the nature of the counter anion and the presence/absence of co-crystallized solvent molecule(s) significantly affected the temperature as well as the abruptness of the spin transition. This is the first report of SCO behaviour observed for iron complexes containing a cross-bridged cyclam derivative.
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Affiliation(s)
- Bohuslav Drahoš
- Department of Inorganic Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-771 46 Olomouc, Czech Republic.
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18
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Halogen Substituent Effect on the Spin-Transition Temperature in Spin-Crossover Fe(III) Compounds Bearing Salicylaldehyde 2-Pyridyl Hydrazone-Type Ligands and Dicarboxylic Acids. INORGANICS 2017. [DOI: 10.3390/inorganics5030053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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19
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Fumanal M, Jiménez-Grávalos F, Ribas-Arino J, Vela S. Lattice-Solvent Effects in the Spin-Crossover of an Fe(II)-Based Material. The Key Role of Intermolecular Interactions between Solvent Molecules. Inorg Chem 2017; 56:4475-4484. [DOI: 10.1021/acs.inorgchem.7b00017] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria Fumanal
- Laboratoire de Chimie
Quantique, Institut de Chimie, UMR 7177, CNRS-Université de Strasbourg, 1 Rue Blaise Pascal BP 296/R8, F-67007 Strasbourg, France
| | - Fernando Jiménez-Grávalos
- Departament de Química Física and IQTCUB, Facultat
de Química, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain
| | - Jordi Ribas-Arino
- Departament de Química Física and IQTCUB, Facultat
de Química, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain
| | - Sergi Vela
- Laboratoire de Chimie
Quantique, Institut de Chimie, UMR 7177, CNRS-Université de Strasbourg, 1 Rue Blaise Pascal BP 296/R8, F-67007 Strasbourg, France
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20
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Luo YH, Wen GJ, Gu LS, Wang MN, Sun BW. Study of spin crossover in an iron(II) tris(diimine) system tuned by counter anions. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Yuan J, Liu MJ, Liu CM, Kou HZ. Iron(iii) complexes of 2-methyl-6-(pyrimidin-2-yl-hydrazonomethyl)-phenol as spin-crossover molecular materials. Dalton Trans 2017; 46:16562-16569. [DOI: 10.1039/c7dt03233a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Four new mononuclear Fe(iii) complexes are obtained by using 2-methyl-6-(pyrimidin-2-yl-hydrazonomethyl)-phenol. The perchlorate complex displays spin crossover with a hysteresis of 32 K, while the neutral complex exhibits a gradual incomplete spin transition.
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Affiliation(s)
- Juan Yuan
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
- School of Pharmacy
| | - Mei-Jiao Liu
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hui-Zhong Kou
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
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22
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Synthesis, Structure, and Magnetic Properties of New Spin Crossover Fe(II) Complexes Forming Short Hydrogen Bonds with Substituted Dicarboxylic Acids. CRYSTALS 2016. [DOI: 10.3390/cryst6100131] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Bartual-Murgui C, Codina C, Roubeau O, Aromí G. A Sequential Method to Prepare Polymorphs and Solvatomorphs of [Fe(1,3-bpp)2
](ClO4
)2
⋅n
H2
O (n
=0, 1, 2) with Varying Spin-Crossover Behaviour. Chemistry 2016; 22:12767-76. [DOI: 10.1002/chem.201601843] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Carlos Bartual-Murgui
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Carlota Codina
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC and; Universidad de Zaragoza; Plaza San Francisco s/n 50009 Zaragoza Spain
| | - Guillem Aromí
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
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24
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Luo YH, Nihei M, Wen GJ, Sun BW, Oshio H. Ambient-Temperature Spin-State Switching Achieved by Protonation of the Amino Group in [Fe(H2Bpz2)2(bipy-NH2)]. Inorg Chem 2016; 55:8147-52. [DOI: 10.1021/acs.inorgchem.6b01193] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang-Hui. Luo
- School
of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Masayuki Nihei
- Faculty
of Pure and Applied Science, University of Tsukuba, Tennodai
1-1-1, Tsukuba 305-8571, Japan
| | - Gao-Ju Wen
- School
of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Bai-Wang Sun
- School
of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Hiroki Oshio
- Faculty
of Pure and Applied Science, University of Tsukuba, Tennodai
1-1-1, Tsukuba 305-8571, Japan
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25
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Solvent-Induced Polymorphism of Iron(II) Spin Crossover Complexes. MATERIALS 2016; 9:ma9070585. [PMID: 28773709 PMCID: PMC5456902 DOI: 10.3390/ma9070585] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 12/24/2022]
Abstract
Two new mononuclear iron(II) compounds (1) and (2) of the general formula [Fe(L)₂](BF₄)₂·nCH₃CN (L = 4-(2-bromoethyn-1-yl)-2,6-bis(pyrazol-1-yl)pyridine, n = 1 for (1) and n = 2 for compound (2)), were synthesized. The room temperature crystallization afforded concomitant formation of two different solvent analogues: compound (1) exhibiting triclinic P-1 and compound (2) monoclinic C2/c symmetry. Single-crystal X-ray studies confirmed the presence of the LS (low-spin) state for both compounds at 180 K and of the HS (high-spin) state for compound (2) at 293 K, in full agreement with the magnetic investigations for both solvent polymorphs. Compound (1) exhibits spin transition above 293 K followed by subsequent solvent liberation, while the spin transition of (2) takes already place at 237 K. After complete solvent removal from the crystal lattice, compound (1d) (the desolvated polymorph derived from (1)) exhibits spin transition centered at 342 K accompanied by a thermal hysteresis loop, while the analogous compound (2d) (the desolvated derivate of compound (2)) remains blocked in the HS state over all the investigated temperature range.
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26
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Darawsheh M, Barrios LA, Roubeau O, Teat SJ, Aromí G. Guest-, Light- and Thermally-Modulated Spin Crossover in [FeII2] Supramolecular Helicates. Chemistry 2016; 22:8635-45. [DOI: 10.1002/chem.201601080] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Mohanad Darawsheh
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Leoni A. Barrios
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA); CSIC and Universidad de Zaragoza; Plaza San Francisco s/n 50009 Zaragoza Spain
| | - Simon J. Teat
- Advanced Light Source; Berkeley Laboratory; 1 Cyclotron Road Berkeley California 94720 USA
| | - Guillem Aromí
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
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27
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Periodic Density Functional Calculations in Order to Assess the Cooperativity of the Spin Transition in Fe(phen)2(NCS)2. MAGNETOCHEMISTRY 2016. [DOI: 10.3390/magnetochemistry2010014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Disclosing the Ligand- and Solvent-Induced Changes on the Spin Transition and Optical Properties of Fe(II)-Indazolylpyridine Complexes. MAGNETOCHEMISTRY 2016. [DOI: 10.3390/magnetochemistry2010006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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29
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Huang W, Shen F, Zhang M, Wu D, Pan F, Sato O. Room-temperature switching of magnetic hysteresis by reversible single-crystal-to-single-crystal solvent exchange in imidazole-inspired Fe(ii) complexes. Dalton Trans 2016; 45:14911-8. [DOI: 10.1039/c6dt01777k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Molecular switch ON/OFF magnetic hysteresis around room temperature can be achieved by reversible single-crystal-to-single-crystal (SCSC) solvent exchange in imidazole-inspired dihydroquinazoline Fe(ii) complexes.
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Affiliation(s)
- Wei Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Fuxing Shen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Ming Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Dayu Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Feifei Pan
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Fukuoka
- Japan
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30
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Zhao XH, Zhang SL, Shao D, Wang XY. Spin Crossover in [Fe(2-Picolylamine)3]2+ Adjusted by Organosulfonate Anions. Inorg Chem 2015. [DOI: 10.1021/acs.inorgchem.5b00870] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xin-Hua Zhao
- State Key Laboratory of Coordination Chemistry, Collaborative
Innovation Center of Advanced Microstructures, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Shao-Liang Zhang
- State Key Laboratory of Coordination Chemistry, Collaborative
Innovation Center of Advanced Microstructures, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry, Collaborative
Innovation Center of Advanced Microstructures, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative
Innovation Center of Advanced Microstructures, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210093, China
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31
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Vela S, Fumanal M, Ribas-Arino J, Robert V. Towards an accurate and computationally-efficient modelling of Fe(ii)-based spin crossover materials. Phys Chem Chem Phys 2015; 17:16306-14. [DOI: 10.1039/c5cp02502h] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A theoretical approach is proposed to accurately calculate the LS–HS energy gap of SCO complexes in the solid state.
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Affiliation(s)
- Sergi Vela
- Laboratoire de Chimie Quantique
- Université de Strasbourg
- F-67000 Strasbourg
- France
- Departament de Química Física and IQTCUB
| | - Maria Fumanal
- Departament de Química Física and IQTCUB
- Universitat de Barcelona
- Barcelona
- Spain
| | - Jordi Ribas-Arino
- Departament de Química Física and IQTCUB
- Universitat de Barcelona
- Barcelona
- Spain
| | - Vincent Robert
- Laboratoire de Chimie Quantique
- Université de Strasbourg
- F-67000 Strasbourg
- France
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32
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Vela S, Novoa JJ, Ribas-Arino J. Insights into the crystal-packing effects on the spin crossover of [FeII(1-bpp)]2+-based materials. Phys Chem Chem Phys 2014; 16:27012-24. [DOI: 10.1039/c4cp03971h] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Amani V, Abedi A, Ghabeshi S, Khavasi HR, Hosseini SM, Safari N. Synthesis and characterization of a series of gold(III) complexes with the 4,4′-dimethyl-2,2′-bipyridine ligand: Counterion influence on the cytotoxicity of gold(III) complexes. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.04.064] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Wang H, Sinito C, Kaiba A, Costa JS, Desplanches C, Dagault P, Guionneau P, Létard J, Negrier P, Mondieig D. Unusual Solvent Dependence of a Molecule‐Based Fe
II
Macrocyclic Spin‐Crossover Complex. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402666] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hongfeng Wang
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Chiara Sinito
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Abdellah Kaiba
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - José Sanchez Costa
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Cédric Desplanches
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Philippe Dagault
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Philippe Guionneau
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Jean‐François Létard
- CNRS, ICMCB, UPR 9048, 33600 Pessac, France, http://www.icmcb‐bordeaux.cnrs.fr
- Univ. Bordeaux, ICMCB, UPR9048, 33600 Pessac, France, http://www.u‐bordeaux.fr
| | - Philippe Negrier
- Univ. Bordeaux, LOMA, UMR 5798, 33400 Talence, France
- CNRS, LOMA, UMR 5798, 33400 Talence, France
| | - Denise Mondieig
- Univ. Bordeaux, LOMA, UMR 5798, 33400 Talence, France
- CNRS, LOMA, UMR 5798, 33400 Talence, France
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35
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Schweinfurth D, Demeshko S, Hohloch S, Steinmetz M, Brandenburg JG, Dechert S, Meyer F, Grimme S, Sarkar B. Spin Crossover in Fe(II) and Co(II) Complexes with the Same Click-Derived Tripodal Ligand. Inorg Chem 2014; 53:8203-12. [DOI: 10.1021/ic500264k] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- David Schweinfurth
- Institut für Chemie und Biochemie, Anorganische
Chemie, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Serhiy Demeshko
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, D-37077, Göttingen, Germany
| | - Stephan Hohloch
- Institut für Chemie und Biochemie, Anorganische
Chemie, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Marc Steinmetz
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, Universität Bonn, Beringstraße 4, D-53115, Bonn, Germany
| | - Jan Gerit Brandenburg
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, Universität Bonn, Beringstraße 4, D-53115, Bonn, Germany
| | - Sebastian Dechert
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, D-37077, Göttingen, Germany
| | - Franc Meyer
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, D-37077, Göttingen, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische
und Theoretische Chemie, Universität Bonn, Beringstraße 4, D-53115, Bonn, Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische
Chemie, Fabeckstraße 34-36, D-14195, Berlin, Germany
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Gavette JV, Klug CM, Zakharov LN, Shores MP, Haley MM, Johnson DW. Intramolecular N-H···Cl hydrogen bonds in the outer coordination sphere of a bipyridyl bisurea-based ligand stabilize a tetrahedral FeLCl2 complex. Chem Commun (Camb) 2014; 50:7173-5. [PMID: 24854889 PMCID: PMC4112994 DOI: 10.1039/c4cc02297a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 05/14/2014] [Indexed: 11/21/2022]
Abstract
A bipyridyl-based anion receptor is utilized as a ligand in a tetrahedral FeCl2 complex and demonstrates secondary coordination sphere influence through intramolecular hydrogen bonding to the chloride ligands as evidenced by X-ray crystallography.
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Affiliation(s)
- Jesse V. Gavette
- Department of Chemistry & Biochemistry and Materials Science Institute , University of Oregon , Eugene , OR 97403-1253 , USA . ; ; Tel: +1-541-346-1253 ; Tel: +1-541-346-0456
| | - Christina M. Klug
- Department of Chemistry , Colorado State University , Fort Collins , CO 80523-1872 , USA . ; Tel: +1-970-491-7235
| | - Lev N. Zakharov
- CAMCOR—Center for Advanced Materials Characterization in Oregon , University of Oregon , Eugene , OR 97403-1253 , USA
| | - Matthew P. Shores
- Department of Chemistry , Colorado State University , Fort Collins , CO 80523-1872 , USA . ; Tel: +1-970-491-7235
| | - Michael M. Haley
- Department of Chemistry & Biochemistry and Materials Science Institute , University of Oregon , Eugene , OR 97403-1253 , USA . ; ; Tel: +1-541-346-1253 ; Tel: +1-541-346-0456
| | - Darren W. Johnson
- Department of Chemistry & Biochemistry and Materials Science Institute , University of Oregon , Eugene , OR 97403-1253 , USA . ; ; Tel: +1-541-346-1253 ; Tel: +1-541-346-0456
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37
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Rudavskyi A, Sousa C, de Graaf C, Havenith RWA, Broer R. Computational approach to the study of thermal spin crossover phenomena. J Chem Phys 2014; 140:184318. [DOI: 10.1063/1.4875695] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Guionneau P. Crystallography and spin-crossover. A view of breathing materials. Dalton Trans 2014; 43:382-93. [DOI: 10.1039/c3dt52520a] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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39
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Setifi Z, Domasevitch KV, Setifi F, Mach P, Ng SW, Petříček V, Dušek M. Multiple anion...π interactions in tris(1,10-phenanthroline-κ(2)N,N')iron(II) bis[1,1,3,3-tetracyano-2-(2-hydroxyethyl)propenide] monohydrate. Acta Crystallogr C 2013; 69:1351-6. [PMID: 24192188 DOI: 10.1107/s0108270113027108] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 10/02/2013] [Indexed: 11/10/2022] Open
Abstract
In the ionic structure of the title compound, [Fe(C12H8N2)3](C9H5N4O2)2·H2O, the octahedral tris-chelate [Fe(phen)3](2+) dications [Fe-N = 1.9647 (14)-1.9769 (14) Å; phen is 1,10-phenathroline] afford one-dimensional chains by a series of slipped π-π stacking interactions [centroid-to-centroid distances = 3.792 (3) and 3.939 (3) Å]. The 1,1,3,3-tetracyano-2-(2-hydroxyethyl)propenide anions, denoted tcnoetOH(-), reveal an appreciable delocalization of π-electron density, involving the central propenide [C-C = 1.383 (3)-1.401 (2) Å] fragment and four nitrile groups, and this is also supported by density functional theory (DFT) calculations at the B97D/6-311+G(2d,2p) level. Primary noncovalent inter-moiety interactions comprise conventional O-H...O(N) and weak C-H...O(N) hydrogen bonding [O...O(N) = 2.833 (2)-3.289 (5) Å and C...O(N) = 3.132 (2)-3.439 (2) Å]. The double anion...π interaction involving a nitrile group of tcnoetOH(-) and two cis-positioned pyridine rings (`π-pocket') of [Fe(phen)3](2+) [N...centroid = 3.212 (2) and 3.418 (2) Å] suggest the relevance of anion...π stackings for charge-diffuse polycyanoanions and common M-chelate species.
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Affiliation(s)
- Zouaoui Setifi
- Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda, BP 26, Route d'El-Hadaiek, Skikda 21000, Algeria
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40
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Paulsen H, Schünemann V, Wolny JA. Progress in Electronic Structure Calculations on Spin-Crossover Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201289] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Lacroix PG, Malfant I, Real JA, Rodriguez V. From Magnetic to Nonlinear Optical Switches in Spin-Crossover Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201151] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Tobon YA, Kabalan L, Bonhommeau S, Daro N, Grosjean A, Guionneau P, Matar S, Létard JF, Guillaume F. Spin crossover complexes [Fe(NH2trz)3](X)2·nH2O investigated by means of polarized Raman scattering and DFT calculations. Phys Chem Chem Phys 2013; 15:18128-37. [DOI: 10.1039/c3cp52505h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Matouzenko GS, Borshch SA, Schünemann V, Wolny JA. Ligand strain and conformations in a family of Fe(ii) spin crossover hexadentate complexes involving the 2-pyridylmethyl-amino moiety: DFT modelling. Phys Chem Chem Phys 2013; 15:7411-9. [DOI: 10.1039/c3cp44570d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Wei RJ, Tao J, Huang RB, Zheng LS. Anion-Dependent Spin Crossover and Coordination Assembly Based on [Fe(tpa)]2+[tpa = tris(2-pyridylmethyl)amine] and [N(CN)2]-: Square, Zigzag, Dimeric, and [4+1]-Cocrystallized Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200541] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Klug CM, McDaniel AM, Fiedler SR, Schulte KA, Newell BS, Shores MP. Anion dependence in the spin-crossover properties of a Fe(ii) podand complex. Dalton Trans 2012; 41:12577-85. [DOI: 10.1039/c2dt31213a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Nistor A, Shova S, Cazacu M, Lazar A. Hexa-kis-(1H-imidazole-κN)iron(II) sulfate-1H-imidazole (1/2). Acta Crystallogr Sect E Struct Rep Online 2011; 67:m1600-1. [PMID: 22219829 PMCID: PMC3247524 DOI: 10.1107/s1600536811043169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 10/18/2011] [Indexed: 11/12/2022]
Abstract
The asymmetric unit of the title compound, [Fe(C3H4N2)6]SO4·2C3H4N2, contains two complex cations, two sulfate anions and four imidazole molecules. In both cations, the FeII atom is coordinated by six monodentate imidazole ligands and exhibits a slightly distorted octahedral coordination geometry. The Fe—N distances [2.184 (4)–2.218 (4) Å] point to a high-spin state of the Fe2+ ions. N—H⋯O hydrogen bonds between the ionic components generate a three-dimensional framework containing corrugated channels along [001], which are filled by N—H⋯N hydrogen-bonded imidazole chains.
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48
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Li B, Zhang J, Yong X, Li W, Zheng Y. The low spin Co(II) fragment with homoleptic 1,10-phenanthroline ligands: synthesis, structures, DFT investigations, and magnetic properties. Dalton Trans 2011; 40:4459-64. [PMID: 21416105 DOI: 10.1039/c0dt01640c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two complexes {[Co(II)(phen)(3)][Co(III)(phen)(CN)(4)](2)}·phen·11H(2)O (1) and [Co(II)(μ-CN)(2)(Co(III))(2)(phen)(4)(CN)(6)]·C(2)H(5)OH·2H(2)O (2) were synthesized with identical starting materials but with a different order of addition. Their crystal structures, spectroscopic analysis, DFT calculations, and investigations of their magnetic properties are reported herein. The X-ray diffraction studies reveal that complex 1 mainly consists of discrete [Co(II)(phen)(3)](2+) cations and [Co(III)(phen)(CN)(4)](-) anions, while complex 2 is dominantly comprised of discrete neutral V-shaped trinuclear units [Co(II)(μ-CN)(2)(Co(III))(2)(phen)(4)(CN)(6)]. The first low-spin Co(II) fragment with homoleptic 1,10-phenanthroline ligands in 1 is observed at room temperature, owing to charge transfer from the neighboring anion via adventitious contacts and anion-π interactions. This is verified by structures, detailed theoretical analyses concerning frontier molecular orbital energy differences and Mulliken charge variations of the N atoms within the Co(II)N(6) sphere, and magnetism. Meanwhile, these kinds of supramolecular interactions are not found in complex 2, so it shows the ordinary magnetic behavior of the high-spin Co(II) ion. Our investigations highlight that for quantitative comprehension of spin-state energetic ordering in transition metal complexes, the supramolecular interactions must be taken into account in addition to classical ligand field theory. Moreover, we find that the [Co(II)(phen)(3)](2+) dication is sensitive to its surroundings in the solid state, which is beneficial for magnetic adjustment for the further synthesis of tunable molecular magnets and spin crossover systems.
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Affiliation(s)
- Bo Li
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
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49
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Halcrow MA. Structure:function relationships in molecular spin-crossover complexes. Chem Soc Rev 2011; 40:4119-42. [PMID: 21483934 DOI: 10.1039/c1cs15046d] [Citation(s) in RCA: 642] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin-crossover compounds are becoming increasingly popular for device and sensor applications, and in soft materials, that make use of their switchable colour, paramagnetism and conductivity. The de novo design of new solid spin-crossover compounds with pre-defined switching properties is desirable for application purposes. This challenging problem of crystal engineering requires an understanding of how the temperature and cooperativity of a spin-transition are influenced by the structure of the bulk material. Towards that end, this critical review presents a survey of molecular spin-crossover compounds with good availability of crystallographic data. A picture is emerging that changes in molecular shape between the high- and low-spin states, and the ability of a lattice to accommodate such changes, can play an important role in determining the existence and the cooperativity of a thermal spin-transition in the solid state (198 references).
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Affiliation(s)
- Malcolm A Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, UK LS2 9JT. m.a.halcrow@ leeds.ac.uk
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50
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Abedi A, Safari N, Amani V, Khavasi HR. Synthesis, characterization, mechanochromism and photochromism of [Fe(dm4bt)3][FeCl4]2 and [Fe(dm4bt)3][FeBr4]2, along with the investigation of steric influence on spin state. Dalton Trans 2011; 40:6877-85. [DOI: 10.1039/c0dt01508c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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