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Mixed-Valent Mn Supertetrahedra and Planar Discs as Enhanced Magnetic Coolers
Open accessAbstract
The syntheses and structures of two decametallic mixed-valent Mn supertetrahedra using 2-amino-2-methyl-1,3-propanediol (ampH2), two decametallic mixed-valent Mn planar discs using 2-amino-2-methyl-1,3-propanediol (ampH2) and 2-amino-2-ethyl-1,3-propanediol (aepH2), and a tetradecametallic mixed-valent Mn planar disc using pentaerythritol (H4peol) are reported. The decametallic complexes display dominant ferromagnetic exchange and spin ground states of S = 22, and the tetradecametallic complex displays dominant antiferromagnetic exchange and a spin ground state of S = 7 +/- 1. All display large (the former) and enormous (the latter) magnetocaloric effect--the former as a result of negligible zero-field splitting of the ground state, and the latter as a result of possessing a high spin-degeneracy at finite low temperatures--making them the very best cooling refrigerants for low-temperature applications.
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Citations
Cited by
Interfacial Effects in Iron-Nickel Hydroxide–Platinum Nanoparticles Enhance Catalytic Oxidation
Chen, G., Zhao, Y., Fu, G., Duchesne, P. N., Gu, L., Zheng, Y., Weng, X., Chen, M., Zhang, P., Pao, C.-W., et al. (2014) · Science · doi:10.1126/science.1252553 · Cited by 708
Molecule-based magnetic coolers
Zheng, Y.-Z., Zhou, G.-J., Zheng, Z., & Winpenny, R. E. P. (2014) · Chem. Soc. Rev. · doi:10.1039/c3cs60337g · Cited by 578
High-Nuclearity 3d–4f Clusters as Enhanced Magnetic Coolers and Molecular Magnets
Peng, J.-B., Zhang, Q.-C., Kong, X.-J., Zheng, Y.-Z., Ren, Y.-P., Long, L.-S., Huang, R.-B., Zheng, L.-S., & Zheng, Z. (2012) · Journal of the American Chemical Society · doi:10.1021/ja209752z · Cited by 469
Large Magnetocaloric Effect in a Wells–Dawson Type {Ni6Gd6P6} Cage
Zheng, Y., Evangelisti, M., & Winpenny, R. E. P. (2011) · Angewandte Chemie International Edition · doi:10.1002/anie.201008074 · Cited by 299
Self-citationMachine learning guided design of single-molecule magnets for magnetocaloric applications
Holleis, L., Shivaram, B. S., & Balachandran, P. V. (2019) · Applied Physics Letters · doi:10.1063/1.5094553 · Cited by 29
Metadata
- Authors
- Manoli, M., Collins, A., Parsons, S., Candini, A., Evangelisti, M., & Brechin, E. K.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-07-25
- Volume
- 130
- Issue
- 33
- Pages
- 11129-11139
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2122391392
- Cited by
- 234
- References
- 0
- FWCI
- 6.20
- Type
- journal article
- Language
- en
- Open access
- green
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