101
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Heider S, Petzold H, Chastanet G, Schlamp S, Rüffer T, Weber B, Létard JF. Biphenyl bridged hexadentate N6-ligands – a rigid ligand backbone for Fe(ii) spin crossover complexes. Dalton Trans 2013; 42:8575-84. [DOI: 10.1039/c2dt32451b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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102
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Białońska A, Bronisz R. Role of Fe-N-C geometry flip-flop in bistability in Fe(tetrazol-2-yl)4(C2H5CN)2-type core based coordination network. Inorg Chem 2012; 51:12630-7. [PMID: 23150893 DOI: 10.1021/ic300880w] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[Fe(ebtz)(2)(C(2)H(5)CN)(2)](ClO(4))(2) was prepared in the reaction of 1,2-di(tetrazol-2-yl)ethane (ebtz) with Fe(ClO(4))(2)·6H(2)O in propionitrile. The compound crystallizes as a one-dimensional (1D) network, where bridging of neighboring iron(II) ions by two ebtz ligand molecules results in formation of a [Fe(ebtz)(2)](∞) polymeric skeleton. The 1D chains are assembled into supramolecular layers with axially coordinated nitrile molecules directed outward. The complex in the high spin (HS) form reveals a very rare feature, namely, a bent geometry of the Fe-N-C(propionitrile) fragment (149.1(3)° at 250 K). The HS to low spin (LS) HS→LS transition triggers reorientation of the propionitrile molecule resulting in accommodation of a typical linear geometry of the Fe-N-C(nitrile) fragment. The switching of the propionitrile molecule orientation in relation to the coordination octahedron is associated with increase of the distance between the supramolecular layers. When the crystal is in the LS phase, raising the temperature does not cause reduction of the distance between supramolecular layers, which contributes to further stabilization of the more linear geometry of Fe-N-C(C(2)H(5)) and the LS form of the complex. Thus, a combination of Fe-N-C(C(2)H(5)) geometry lability and lattice effects contributes to the appearance of hysteretic behavior (T(1/2)(↓) ≈ 112 K, T(1/2)(↑) ≈ 141 K).
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Affiliation(s)
- Agata Białońska
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
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103
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Bao X, Shepherd HJ, Salmon L, Molnár G, Tong ML, Bousseksou A. The Effect of an Active Guest on the Spin Crossover Phenomenon. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207218] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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104
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Bao X, Shepherd HJ, Salmon L, Molnár G, Tong ML, Bousseksou A. The Effect of an Active Guest on the Spin Crossover Phenomenon. Angew Chem Int Ed Engl 2012; 52:1198-202. [DOI: 10.1002/anie.201207218] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Indexed: 11/10/2022]
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105
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Lennartson A, Bond AD, Piligkos S, McKenzie CJ. Four-Site Cooperative Spin Crossover in a Mononuclear FeIIComplex. Angew Chem Int Ed Engl 2012; 51:11049-52. [PMID: 23023787 DOI: 10.1002/anie.201204207] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Anders Lennartson
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark
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106
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Lennartson A, Bond AD, Piligkos S, McKenzie CJ. Four-Site Cooperative Spin Crossover in a Mononuclear FeIIComplex. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204207] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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107
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Sciortino NF, Scherl-Gruenwald KR, Chastanet G, Halder GJ, Chapman KW, Létard JF, Kepert CJ. Hysteretic Three-Step Spin Crossover in a Thermo- and Photochromic 3D Pillared Hofmann-type Metal-Organic Framework. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204387] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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108
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Sciortino NF, Scherl-Gruenwald KR, Chastanet G, Halder GJ, Chapman KW, Létard JF, Kepert CJ. Hysteretic three-step spin crossover in a thermo- and photochromic 3D pillared Hofmann-type metal-organic framework. Angew Chem Int Ed Engl 2012; 51:10154-8. [PMID: 22968968 DOI: 10.1002/anie.201204387] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Indexed: 11/11/2022]
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109
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Lin JB, Xue W, Wang BY, Tao J, Zhang WX, Zhang JP, Chen XM. Chemical/Physical Pressure Tunable Spin-Transition Temperature and Hysteresis in a Two-Step Spin Crossover Porous Coordination Framework. Inorg Chem 2012; 51:9423-30. [DOI: 10.1021/ic301237p] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian-Bin Lin
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials
and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Wei Xue
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials
and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Bao-Ying Wang
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials
and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jun Tao
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wei-Xiong Zhang
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials
and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials
and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials
and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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110
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Chuang YC, Liu CT, Sheu CF, Ho WL, Lee GH, Wang CC, Wang Y. New Iron(II) Spin Crossover Coordination Polymers [Fe(μ-atrz)3]X2·2H2O (X = ClO4¯, BF4¯) and [Fe(μ-atrz)(μ-pyz)(NCS)2]·4H2O with an Interesting Solvent Effect. Inorg Chem 2012; 51:4663-71. [DOI: 10.1021/ic202626c] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu-Chun Chuang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Chi-Tsun Liu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Chou-Fu Sheu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Wei-Lun Ho
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, College
of Science, National Taiwan University,
Taipei, Taiwan
| | - Chih-Cheh Wang
- Department
of Chemistry, Soochow University, Taipei,
Taiwan
| | - Yu Wang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
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111
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Spiral Assembly of the 1D Chain Sheet of Fe(NCBH3)2(bpa)2·(biphenyl) (bpa = 1,2-bis(4-pyridyl)ethane) and its Stepwise Spin-Crossover Phenomenon. Polymers (Basel) 2012. [DOI: 10.3390/polym4010880] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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112
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Ross TM, Moubaraki B, Batten SR, Murray KS. Spin crossover in polymeric and heterometallic FeII species containing polytopic dipyridylamino-substituted-triazine ligands. Dalton Trans 2012; 41:2571-81. [PMID: 21858315 DOI: 10.1039/c1dt10818b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and characterisation of the new polytopic ligands, ddta (N,N-di(pyridin-2-yl)-4,6-di(1,4,7,10-tetraoxa-13-azacyclopentadecan-13-yl)-1,3,5-triazin-2-amine) and tptd (N(2),N(2),N(4),N(4)-tetra(pyridin-2-yl)-6-(1,4,7,10-tetraoxa-13-azacyclopentadecan-13-yl)-1,3,5-triazine-2,4-diamine). Each contains N-donor dipyridylamino binding sites as well as separate and distinct mono-aza-15-crown-5 binding sites. The ligand ddta has been used to synthesise the polymeric heterometallic SCO compound trans-[Fe(II)(NCS)(2)(ddta)(2)Na(2)](ClO(4))(2)·4CH(3)CH(2)CH(2)OH, 1, and tptd has been used to synthesise the polymeric SCO compound trans-[Fe(II)(NCS)(2)(tptd)]·CH(3)OH, 2, and the dinuclear compound cis-[(Fe(II))(2)(NCS)(4)(tptd)(2)], 3. Magnetic susceptibility measurements show that 1 and a desolvated sample of 2 each undergo a gradual, one-step spin transition with T(½) values of ~240 K and ~110 K, respectively. The paucity of inter-chain intermolecular interactions, as well as the flexible, covalent bridges between Fe(II) spin crossover sites, are likely to contribute to the gradual nature of the spin transition observed in each case. Variable temperature powder X-ray diffraction studies on 1 show the anisotropic behaviour of the unit cell parameters, where c and the b-c plane are most affected by structural changes occurring as the temperature is lowered.
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Affiliation(s)
- Tamsyn M Ross
- School of Chemistry, Monash University, Clayton, Victoria, Australia
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113
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Guionneau P, Marchivie M, Bravic G, Létard JF, Chasseau D. Structural Aspects of Spin Crossover. Example of the [FeIILn(NCS)2] Complexes. Top Curr Chem (Cham) 2012. [DOI: 10.1007/b95414] [Citation(s) in RCA: 376] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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114
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Shongwe MS, Al-Rahbi SH, Al-Azani MA, Al-Muharbi AA, Al-Mjeni F, Matoga D, Gismelseed A, Al-Omari IA, Yousif A, Adams H, Morris MJ, Mikuriya M. Coordination versatility of tridentate pyridyl aroylhydrazones towards iron: tracking down the elusive aroylhydrazono-based ferric spin-crossover molecular materials. Dalton Trans 2012; 41:2500-14. [DOI: 10.1039/c1dt11407g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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115
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Siegler MA, Hao X, Parkin S, Brock CP. [Ni(H2O)6](NO3)2·(15-crown-5)·2H2O: three phase transitions and an intermediate modulated phase stable over a range of ca 40 K. ACTA CRYSTALLOGRAPHICA SECTION B: STRUCTURAL SCIENCE 2011; 67:486-98. [DOI: 10.1107/s0108768111045897] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 10/31/2011] [Indexed: 11/10/2022]
Abstract
In the range 308–90 K single crystals of [Ni(H2O)6](NO3)2·(15-crown-5)·2H2O continue to diffract well as they undergo three phase transitions. Structures have been determined at 28 different temperatures; data were collected at six more but could not be refined satisfactorily. The transitions identified structurally are in good agreement with those found by thermal analysis. Phase I (above ca 292 K; I2/m, Z = 2, Z′ = ¼) is disordered because the 15-crown-5 molecule is located on a 2/m site. Phase II (ca 292–248 K; P21/m, Z = 2, Z′ = ½) is less disordered. Phase III (ca 248–208 K; B21, Z = 28, Z′ = 7 in a commensurate approximation) is modulated with some regions resembling phase II and the rest resembling the fully ordered phase IV (P21/c, Z = 4, Z′ = 1) that is stable below ca 208 K. The modulated structure could be determined well because crystals flash-cooled to 90 K usually retain the phase III structure. The unusual phase III may be a consequence of the differing thermal contraction of two types of alternating layers, one composed of neutral 15-crown-5 molecules and the other composed of the cations, anions and lattice water molecules, which form a hydrogen-bonded network. The two kinds of layers are linked by Oether...H2Oaxial—Ni hydrogen bonds.
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116
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Nishi K, Matsumoto N, Iijima S, Halcrow MA, Sunatsuki Y, Kojima M. A Hydrogen Bond Motif Giving a Variety of Supramolecular Assembly Structures and Spin-Crossover Behaviors. Inorg Chem 2011; 50:11303-5. [PMID: 22026550 DOI: 10.1021/ic201993z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koshiro Nishi
- Department of Chemistry, Faculty of Science, Kumamoto University, Kumamoto 860-8555, Japan
| | - Naohide Matsumoto
- Department of Chemistry, Faculty of Science, Kumamoto University, Kumamoto 860-8555, Japan
| | - Seiichiro Iijima
- National Institute of Advanced Industrial Science and Technology, Tsukuba
305-8566, Japan
| | - Malcolm A. Halcrow
- School of
Chemistry, University of Leeds, Woodhouse
Lane, Leeds LS2 9JT,
U.K
| | - Yukinari Sunatsuki
- Department
of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Masaaki Kojima
- Department
of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan
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117
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118
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Zhang Y, Jiang H. Intra- and Interatomic Spin Interactions by the Density Functional Theory plus U Approach: A Critical Assessment. J Chem Theory Comput 2011; 7:2795-803. [DOI: 10.1021/ct200299s] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yachao Zhang
- Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Hong Jiang
- Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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119
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Isostructural phase transition in the spin crossover compound [Fe(dpp)2(NCS)2] · py. ACTA ACUST UNITED AC 2011. [DOI: 10.1524/zkri.2011.1377] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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120
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Kusz J, Bronisz R, Zubko M, Bednarek G. On the Role of Intermolecular Interactions on Structural and Spin-Crossover Properties of 2D Coordination Networks [Fe(bbtr)3]A2 (bbtr=1,4-bis(1,2,3-triazol-1-yl)butane; A=ClO4−, BF4−). Chemistry 2011; 17:6807-20. [PMID: 21547970 DOI: 10.1002/chem.201100394] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Joachim Kusz
- Institute of Physics, University of Silesia, Katowice, Poland
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121
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Bousseksou A, Molnár G, Salmon L, Nicolazzi W. Molecular spin crossover phenomenon: recent achievements and prospects. Chem Soc Rev 2011; 40:3313-35. [PMID: 21544283 DOI: 10.1039/c1cs15042a] [Citation(s) in RCA: 904] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently we assisted a strong renewed interest in the fascinating field of molecular spin crossover complexes by (1) the emergence of nanosized spin crossover materials through direct synthesis of coordination nanoparticles and nanopatterned thin films as well as by (2) the use of novel sophisticated high spatial and temporal resolution experimental techniques and theoretical approaches for the study of spatiotemporal phenomena in cooperative spin crossover systems. Besides generating new fundamental knowledge on size-reduction effects and the dynamics of the spin crossover phenomenon, this research aims also at the development of practical applications such as sensor, display, information storage and nanophotonic devices. In this critical review, we discuss recent work in the field of molecule-based spin crossover materials with a special focus on these emerging issues, including chemical synthesis, physical properties and theoretical aspects as well (223 references).
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Affiliation(s)
- Azzedine Bousseksou
- Laboratoire de Chimie de Coordination, CNRS UPR-8241 and Université de Toulouse, UPS, INP, F-31077 Toulouse, France.
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122
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Atsuchi M, Inoue K, Nakashima S. Reversible structural change of host framework triggered by desorption and adsorption of guest benzene molecules in Fe(NCS)2(bpp)2·2(benzene) (bpp=1,3-bis(4-pyridyl)propane). Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.01.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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123
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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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124
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Coupled Crystallographic Order–Disorder and Spin State in a Bistable Molecule: Multiple Transition Dynamics. Chemistry 2011; 17:3120-7. [DOI: 10.1002/chem.201003197] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Indexed: 11/07/2022]
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125
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Conformational effect of a spin crossover iron(II) complex: Bis[N-(2-methylimidazol-4-yl)methylidene-2-aminoethyl]propanediamineiron(II) perchlorate. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.12.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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126
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Ross TM, Moubaraki B, Wallwork KS, Batten SR, Murray KS. A temperature-dependent order-disorder and crystallographic phase transition in a 0D Feii spin crossover compound and its non-spin crossover Coii isomorph. Dalton Trans 2011; 40:10147-55. [DOI: 10.1039/c1dt10961h] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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127
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Bréfuel N, Collet E, Watanabe H, Kojima M, Matsumoto N, Toupet L, Tanaka K, Tuchagues JP. Nanoscale Self-Hosting of Molecular Spin-States in the Intermediate Phase of a Spin-Crossover Material. Chemistry 2010; 16:14060-8. [DOI: 10.1002/chem.201001264] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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128
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Griffin M, Shakespeare S, Shepherd HJ, Harding CJ, Létard JF, Desplanches C, Goeta AE, Howard JAK, Powell AK, Mereacre V, Garcia Y, Naik AD, Müller-Bunz H, Morgan GG. A Symmetry-Breaking Spin-State Transition in Iron(III). Angew Chem Int Ed Engl 2010; 50:896-900. [DOI: 10.1002/anie.201005545] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2010] [Indexed: 11/07/2022]
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129
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Griffin M, Shakespeare S, Shepherd HJ, Harding CJ, Létard JF, Desplanches C, Goeta AE, Howard JAK, Powell AK, Mereacre V, Garcia Y, Naik AD, Müller-Bunz H, Morgan GG. A Symmetry-Breaking Spin-State Transition in Iron(III). Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201005545] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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130
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Ni Z, Shores MP. Supramolecular Effects on Anion-Dependent Spin-State Switching Properties in Heteroleptic Iron(II) Complexes. Inorg Chem 2010; 49:10727-35. [DOI: 10.1021/ic102004c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhaoping Ni
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Matthew P. Shores
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
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131
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Dupouy G, Triki S, Marchivie M, Cosquer N, Gómez-García CJ, Pillet S, Bendeif EE, Lecomte C, Asthana S, Létard JF. Cyanocarbanion-Based Spin-Crossover Materials: Photocrystallographic and Photomagnetic Studies of a New Iron(II) Neutral Chain. Inorg Chem 2010; 49:9358-68. [DOI: 10.1021/ic101038z] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gaelle Dupouy
- Université Européenne de Bretagne (ueb), Université de Brest, UMR CNRS 6521, 6 Avenue V. Le Gorgeu, C.S. 93837, 29238 Brest, France
| | - Smail Triki
- Université Européenne de Bretagne (ueb), Université de Brest, UMR CNRS 6521, 6 Avenue V. Le Gorgeu, C.S. 93837, 29238 Brest, France
| | - Mathieu Marchivie
- Université Européenne de Bretagne (ueb), Université de Brest, UMR CNRS 6521, 6 Avenue V. Le Gorgeu, C.S. 93837, 29238 Brest, France
| | - Nathalie Cosquer
- Université Européenne de Bretagne (ueb), Université de Brest, UMR CNRS 6521, 6 Avenue V. Le Gorgeu, C.S. 93837, 29238 Brest, France
| | | | - Sébastien Pillet
- CRM2, UMR CNRS 7036, Institut J. Barriol, Nancy-Université, BP239, 54506 Vandoeuvre les Nancy, France
| | - El-Eulmi Bendeif
- CRM2, UMR CNRS 7036, Institut J. Barriol, Nancy-Université, BP239, 54506 Vandoeuvre les Nancy, France
| | - Claude Lecomte
- CRM2, UMR CNRS 7036, Institut J. Barriol, Nancy-Université, BP239, 54506 Vandoeuvre les Nancy, France
| | - Saket Asthana
- CNRS, Université Bordeaux, ICMCB, 87 Av. Doc. A. Schweitzer, F-33608 Pessac, France
| | - Jean-François Létard
- CNRS, Université Bordeaux, ICMCB, 87 Av. Doc. A. Schweitzer, F-33608 Pessac, France
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132
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Bao X, Liu JL, Leng JD, Lin Z, Tong ML, Nihei M, Oshio H. Spin Crossover versus Low-Spin Behaviour Exhibited in 2D and 3D Supramolecular Isomers of [FeII(2,4-bpt)2]⋅Guest. Chemistry 2010; 16:7973-8. [DOI: 10.1002/chem.201001179] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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133
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Koudrtiavtsev AB, Linert W. Free energy functional of the Ising-like model of spin crossover. MONATSHEFTE FUR CHEMIE 2010. [DOI: 10.1007/s00706-010-0315-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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134
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135
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Bao X, Leng JD, Meng ZS, Lin Z, Tong ML, Nihei M, Oshio H. Tuning the Spin States of Two Apical Iron(II) Ions in the Trigonal-Bipyramidal [{FeII(μ-bpt)3}2FeII3(μ3-O)]2+ Cations Through the Choice of Anions. Chemistry 2010; 16:6169-74. [DOI: 10.1002/chem.201000526] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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136
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Li B, Wei RJ, Tao J, Huang RB, Zheng LS, Zheng Z. Solvent-induced transformation of single crystals of a spin-crossover (SCO) compound to single crystals with two distinct SCO centers. J Am Chem Soc 2010; 132:1558-66. [PMID: 20085322 DOI: 10.1021/ja909695f] [Citation(s) in RCA: 228] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The long-sought-after crystal structure of Fe(tpa)(NCS)(2) (1, tpa = tris(2-pyridylmethyl)amine), an otherwise well-studied spin-crossover (SCO) complex, has been obtained, and its one-step, incomplete spin transition was correlated to its solid-state structures at different temperatures. Upon exposure to methanol vapor, single-crystal-to-single-crystal transformation of 1 to a new SCO compound, 2, formulated as {[Fe(tpa)(NCS)(2)] x [Fe(tpa)(NCS)(2) x CH(3)OH]}, occurs with a dramatic color change from yellow to red. Crystallographic studies revealed that the asymmetric unit of the structure of 2 contains two independent Fe(II) centers. Studies by magnetic measurements and Mossbauer spectroscopy revealed a two-step complete spin transition for compound 2, between LS-LS and HS-HS, via an unambiguous intermediate LS-HS phase; the two SCO centers of disparate spin states were resolved crystallographically. That a significant portion of the original crystal structure is maintained indicates that the present approach is a more subtle means of altering the properties associated with SCO phenomenon than by changing counteranions or crystallization using different solvents. Furthermore, the dramatic changes in crystal structure and SCO behaviors triggered by mere solvent sorption suggest that this approach is rather efficient in modifying and hopefully fine-tuning and optimizing properties of SCO compounds. Coupled with the aforementioned gentleness and subtlety, the present approach of heterogeneously introducing perturbations to pre-existing supramolecular arrays of SCO units is more conducive to systematic studies aiming at the discovery of new SCO systems and phenomenon toward their ultimate materials applications.
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Affiliation(s)
- Bao Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
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137
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Koudryavtsev AB, Linert W. Ising-like hamiltonian and free energy functional: Two fundamentally different models of spin crossover. J STRUCT CHEM+ 2010. [DOI: 10.1007/s10947-009-0174-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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138
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Kilner CA, Halcrow MA. An unusual discontinuity in the thermal spin transition in [Co(terpy)2][BF4]2. Dalton Trans 2010; 39:9008-12. [DOI: 10.1039/c0dt00295j] [Citation(s) in RCA: 66] [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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139
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Klingele J, Kaase D, Klingele MH, Lach J, Demeshko S. Two-step spin crossover in the mononuclear iron(ii) complex [FeII(L)2(NCS)2] (L = 2,5-di-(2-pyridyl)-1,3,4-thiadiazole). Dalton Trans 2010; 39:1689-91. [DOI: 10.1039/b924223f] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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140
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Martínez V, Gaspar AB, Muñoz MC, Bukin GV, Levchenko G, Real JA. Synthesis and characterisation of a new series of bistable iron(II) spin-crossover 2D metal-organic frameworks. Chemistry 2009; 15:10960-71. [PMID: 19746366 DOI: 10.1002/chem.200901391] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Twelve coordination polymers with formula {Fe(3-Xpy)(2)[M(II)(CN)(4)]} (M(II): Ni, Pd, Pt; X: F, Cl, Br, I; py: pyridine) have been synthesised, and their crystal structures have been determined by single-crystal or powder X-ray analysis. All of the fluoro and iodo compounds, as well as the chloro derivative in which M(II) is Pt, crystallise in the monoclinic C2/m space group, whereas the rest of the chloro and all of the bromo derivatives crystallise in the orthorhombic Pnc2 space group. In all cases, the iron(II) atom resides in a pseudo-octahedral [FeN(6)] coordination core, with similar bond lengths and angles in the various derivatives. The major difference between the two kinds of structure arises from the stacking of consecutive two-dimensional {Fe(3-Xpy)(2)[M(II)(CN)(4)]}(infinity) layers, which allows different dispositions of the X atoms. The fluoro and chloro derivatives undergo cooperative spin crossover (SCO) with significant hysteretic behaviour, whereas the rest are paramagnetic. The thermal hysteresis, if X is F, shifts toward room temperature without changing the cooperativity as the pressure increases in the interval 10(5) Pa-0.5 GPa. At ambient pressure, the SCO phenomenon has been structurally characterised at different significant temperatures, and the corresponding thermodynamic parameters were obtained from DSC calorimetric measurements. Compound {Fe(3-Clpy)(2)[Pd(CN)(4)]} represents a new example of a "re-entrant" two-step spin transition by showing the Pnma space group in the intermediate phase (IP) and the Pnc2 space group in the low-spin (LS) and high-spin (HS) phases.
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Affiliation(s)
- Víctor Martínez
- Institut de Ciència Molecular (ICMol)/Departament de Química Inorgánica, Universitat de València, Edifici d'Instituts de Paterna, Apartat de Correus 22085, 46071 València, Spain
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141
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Bréfuelâ
N, Watanabe H, Toupet L, Come JÃ, Matsumoto N, Collet E, Tanaka K, Tuchagues JP. Concerted Spin Crossover and Symmetry Breaking Yield Three Thermally and One Light-Induced Crystallographic Phases of a Molecular Material. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904190] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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142
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Bréfuelâ
N, Watanabe H, Toupet L, Come JÃ, Matsumoto N, Collet E, Tanaka K, Tuchagues JP. Concerted Spin Crossover and Symmetry Breaking Yield Three Thermally and One Light-Induced Crystallographic Phases of a Molecular Material. Angew Chem Int Ed Engl 2009; 48:9304-7. [DOI: 10.1002/anie.200904190] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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143
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Iron(II) complexes of 2,6-di(pyrazol-1-yl)pyridines—A versatile system for spin-crossover research. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2009.07.009] [Citation(s) in RCA: 284] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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144
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Verat A, Ould-Moussa N, Jeanneau E, Le Guennic B, Bousseksou A, Borshch S, Matouzenko G. Ligand Strain and the Nature of Spin Crossover in Binuclear Complexes: Two-Step Spin Crossover in a 4,4′-Bipyridine-Bridged Iron(II) Complex [{Fe(dpia)(NCS)2}2(4,4′-bpy)] (dpia=di(2-picolyl)amine; 4,4′-bpy=4,4′-bipyridine). Chemistry 2009; 15:10070-82. [DOI: 10.1002/chem.200900921] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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145
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State of the art and opportunities in probing photoinduced phase transitions in molecular materials by conventional and picosecond X-ray diffraction. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zkri.2008.0027] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
The optical control of the macroscopic physical properties (magnetic, optical …) of a material by laser irradiation is gaining interest through the emerging field of photoinduced phase transitions. Light-induced changes of the macroscopic state of a material involves subtle coupling between the electronic and structural degrees of freedom, which are essential to stabilize the photo-excited state, different in nature from the stable state. Therefore the new experimental field of photocrystallography plays a key role. It goes far beyond simple structural analysis under laser excitation. By playing on different physical parameters and developing the techniques and analysis, one can investigate new out of equilibrium physics through light-driven cooperative dynamics and transformations in materials. This paper is reviewing different aspects of the use of photocrystallography to investigate the nature, the mechanisms and the dynamics of photoinduced phase transitions for photo-steady or long-lived states, as well as transformations driven by an ultra-short light pulse. We also give a brief overview on recent advances in time-resolved crystallography with 100 ps resolution.
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146
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Jensen KP, Cirera J. Accurate Computed Enthalpies of Spin Crossover in Iron and Cobalt Complexes. J Phys Chem A 2009; 113:10033-9. [DOI: 10.1021/jp900654j] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kasper P. Jensen
- Technical University of Denmark, Chemistry-DTU, Building 207, DK-2800 Kgs. Lyngby, Denmark, and Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Jordi Cirera
- Technical University of Denmark, Chemistry-DTU, Building 207, DK-2800 Kgs. Lyngby, Denmark, and Department of Chemistry, Stanford University, Stanford, California 94305-5080
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147
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Sato T, Nishi K, Iijima S, Kojima M, Matsumoto N. One-Step and Two-Step Spin-Crossover Iron(II) Complexes of ((2-Methylimidazol-4-yl)methylidene)histamine. Inorg Chem 2009; 48:7211-29. [DOI: 10.1021/ic9006197] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tetsuya Sato
- Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan
| | - Koshiro Nishi
- Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan
| | - Seiichiro Iijima
- National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8566, Japan
| | - Masaaki Kojima
- Department of Chemistry, Faculty of Science, Tsushima-naka 3-1-1, Okayama 700-8530, Japan
| | - Naohide Matsumoto
- Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan
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148
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Why the model of non-interacting chains yields adequate description of spin crossover in space structures? J STRUCT CHEM+ 2009. [DOI: 10.1007/s10947-008-0188-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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149
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Bhattacharjee A, Ksenofontov V, Goodwin HA, Gütlich P. Pressure-induced hysteresis in the high spin [Formula: see text] low spin transition in bis(2,4-bis(pyridin-2-yl)thiazole) iron(II) tetrafluoroborate. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:026011. [PMID: 21814004 DOI: 10.1088/0953-8984/21/2/026011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Studies of the spin transition behavior of the mononuclear compound [Fe(pythiaz)(2)](BF(4))(2) have been carried out under hydrostatic pressures up to 9.13 kbar in the 5-300 K temperature range. Under ambient pressure this compound exhibits an approximately half-step (incomplete) HS [Formula: see text] LS transition with T(1/2) = 146 K without any thermal hysteresis. At pressures up to 4.5 kbar the behavior remains similar but with an upward displacement of T(1/2) and a slight decrease in the residual high spin fraction at low T. Application of higher pressures resulted in an almost complete two-step spin transition with several unusual pressure effects. Along with the expected pressure dependence of T(1/2) the surprising appearance of hysteresis in the spin transition curves was observed. It is suggested that the likely origin of this unprecedented behavior is a pressure-induced structural change.
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Affiliation(s)
- A Bhattacharjee
- Institut für Anorganische Chemie und Analytische Chemie, Johannes-Gutenberg Universität, D-55099 Mainz, Germany. Department of Physics, Visva-Bharati University, Santiniketan 731235, India
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150
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Neville S, Leita B, Halder G, Kepert C, Moubaraki B, Létard JF, Murray K. Understanding the Two-Step Spin-Transition Phenomenon in Iron(II) 1D Chain Materials. Chemistry 2008; 14:10123-33. [DOI: 10.1002/chem.200800886] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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