Iron(II) Mediated Supramolecular Architectures with Schiff Bases and Their Spin-Crossover Properties
Abstract
:1. Introduction
2. Schiff Base Ligand System in Supramolecular Architectures
3. Magnetic Properties of Iron(II) Spin-Crossover Schiff Base Supramolecular Architectures
3.1. Iron(II) SCO Compounds with Spiral Architectures
3.2. Iron(II) SCO Grid-Architectures
3.3. Iron(II) SCO Compounds with Cage Architectures
3.4. Iron(II) SCO Compounds with Cubic Architectures
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Sample Availability
References
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Fe-8H | Fe-6H | Fe-4H | |||||
---|---|---|---|---|---|---|---|
120 K | 290 K | SCO of Individual Fe Centers | 120 K | 290 K | SCO of Individual Fe Centers | 120 K | |
Fe1 | LS | HS | SCO | LS | LS | No SCO | LS |
Fe2 | LS-HS | LS-HS | Disorder | LS-HS | HS | SCO | LS-HS |
Fe3 | LS | HS | SCO | LS | LS | No SCO | LS |
Fe4 | LS-HS | LS-HS | Disorder | LS-HS | HS | SCO | LS-HS |
Nature of Spin state of the grid | Mixed | Mixed | Mixed | Mixed | Mixed |
Supramolecular Complex and Number | Nuclearity | Coordination Environment | Coordination Structure | SCO Temperature (T1/2) | Ref. |
---|---|---|---|---|---|
[Fe2(H2L1)3]4+ (1) | Dinuclear | N6 | Triple helicate | 240 K | [57,59] |
[Fe2(H2L2)3]4+ (2) | Dinuclear | N6 | Triple helicate | - | [57,59] |
[Fe2(L3)3] (3) | Dinuclear | N6 | Meso-helicate | - | [67] |
[Fe2(L4)3] (4) | Dinuclear | N6 | Meso-helicate | 400 K | [67] |
[Fe2(L5)3](PF6)4 (5) | Dinuclear | N6 | Triple helicate | 165 K | [70] |
[Fe2(L5)3](BF4)4 (6) | Dinuclear | N6 | Triple helicate | - | [70] |
[Fe2(L5)3](ClO4)4 (7) | Dinuclear | N6 | Triple helicate | 50 K | [70] |
[Fe2(L6)3](ClO4)4 (8) | Dinuclear | N6 | Triple helicate | 140 K | [71] |
[Fe2(H2L8)3](ClO4)4.1.5H2O (9) | Dinuclear | N6 | Meso-helicate | 212 K, 134 K | [72] |
[Fe2(μ-o-NTrz)3(o-NTrz)2(NCS)4]·3MeOH (10·3MeOH) | Dinuclear | N6 | 135 K | [82] | |
[Fe2(μ-o-NTrz)3(o-NTrz)2(NCS)4]·3H2O (10.3H2O) | Dinuclear | N6 | T1/2↓↑:150, 172 K | [82] | |
[Fe2(μ-o-NTrz)3(o-NTrz)2(NCS)4] (10·Ø) | Dinuclear | N6 | 175 K | [82] | |
[Fe4(L11)4](BF4)8 (11) | Tetranuclear | N4O2 | Grid | - | [87] |
[Fe4(L13)4]Cl4 (12 ), | Tetranuclear | N6 | Grid | 400 K | [94] |
[Fe4(L13)4](BF4)4 (13) | Tetranuclear | N6 | Grid | 400 K | [94] |
[Fe4(L13)4](ClO4)4 (14) | Tetranuclear | N6 | Grid | - | [94] |
[Fe4(H2L14)4](BF4)8 (15) | Tetranuclear | N6 | Grid | - | [95] |
[Fe4(HL14)2(H2L14)2](BF4)8 (16) | Tetranuclear | N6 | Grid | - | [95] |
[Fe4(L14)2(H2L14)2](BF4)8 (17) | Tetranuclear | N6 | Grid | - | [95] |
[Fe4(L15)4](BF4)8 (18) fresh synthesis | Tetranuclear | N6 | Tetrahedral cage | 284 K | [96] |
[Fe4(L15)4](BF4)8 (18) diluted with acetone | Tetranuclear | N6 | Tetrahedral cage | 288 K | [96] |
[Fe4(L15)4](BF4)8 (18) dried | Tetranuclear | N6 | Tetrahedral cage | - | [96] |
[Fe4(L16)4](OTf)8 (19) | Tetranuclear | N6 | Tetrahedral cage | - | [98] |
[Fe4(L17)4](OTf)8 (20) | Tetranuclear | N6 | Tetrahedral cage | - | [98] |
[Fe4(L17)4](OTf)8 (20) Br− encapsuled | Tetranuclear | N6 | Tetrahedral cage | 328 K | [98] |
[Fe4(L17)4](OTf)8 (20) CS2 encapsuled | Tetranuclear | N6 | Tetrahedral cage | 324 K | [98] |
[Fe4(L18)4](BF4)8 (21) (28.16CH3CN)-solvated | Tetranuclear | N6 | Tetrahedral cage | - | [99] |
[Fe4(L18)4](BF4)8 (21)-non solvated | Tetranuclear | N6 | Tetrahedral cage | - | [99] |
[Fe4(L19)6]8+ (22) | Tetranuclear | N6 | Tetrahedral cage | - | [48] |
[Fe4(L20)6]8+ (23) | Tetranuclear | N6 | Tetrahedral cage | - | [48] |
[Fe4(L21)6]8+ (24) | Tetranuclear | N6 | Tetrahedral cage | - | [48] |
[Fe8(PtL22)6]28+ (25) | Octanuclear | N6 | Cubic | 215 K | [104] |
[Fe8(PtL23)6]28+ (26) | Octanuclear | N6 | Cubic | 281 K | [104] |
[Fe8(PtL24)6]28+ (27) | Octanuclear | N6 | Cubic | 324 K | [104] |
[Fe8L25]16+ (28) | Octanuclear | N6 | Cubic | 249.6 K | [105] |
[Fe8L25]16+ (28) (C70 encapsuled) | Octanuclear | N6 | Cubic | 229.9 K | [105] |
[Fe8L26]16+ (29) | Octanuclear | N6 | Cubic | 247.7 K | [105] |
[Fe8L26]16+ (29) (C70 encapsuled) | Octanuclear | N6 | Cubic | 236.3 K | [105] |
[Fe8(HL27)12] (30) | Octanuclear | N6 | Cubic | 256 K | [110] |
[Fe8(MeL28)12] (31) | Octanuclear | N6 | Cubic | - | [110] |
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Tesfaye, D.; Linert, W.; Gebrezgiabher, M.; Bayeh, Y.; Elemo, F.; Sani, T.; Kalarikkal, N.; Thomas, M. Iron(II) Mediated Supramolecular Architectures with Schiff Bases and Their Spin-Crossover Properties. Molecules 2023, 28, 1012. https://doi.org/10.3390/molecules28031012
Tesfaye D, Linert W, Gebrezgiabher M, Bayeh Y, Elemo F, Sani T, Kalarikkal N, Thomas M. Iron(II) Mediated Supramolecular Architectures with Schiff Bases and Their Spin-Crossover Properties. Molecules. 2023; 28(3):1012. https://doi.org/10.3390/molecules28031012
Chicago/Turabian StyleTesfaye, Dawit, Wolfgang Linert, Mamo Gebrezgiabher, Yosef Bayeh, Fikre Elemo, Taju Sani, Nandakumar Kalarikkal, and Madhu Thomas. 2023. "Iron(II) Mediated Supramolecular Architectures with Schiff Bases and Their Spin-Crossover Properties" Molecules 28, no. 3: 1012. https://doi.org/10.3390/molecules28031012