Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects
Publication type: Journal Article
Publication date: 2013-08-27
scimago Q1
wos Q1
SJR: 5.554
CiteScore: 22.5
Impact factor: 15.6
ISSN: 00027863, 15205126
PubMed ID:
23964606
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
The effect of electron-withdrawing ligands on the energy barriers of Single-Molecule Magnets (SMMs) is investigated. By introducing highly electron-withdrawing atoms on targeted ligands, the energy barrier was significantly enhanced. The structural and magnetic properties of five novel SMMs based on a dinuclear {Dy2} phenoxo-bridged motif are explored and compared with a previously studied {Dy2} SMM (1). All complexes share the formula [Dy2(valdien)2(L)2]·solvent, where H2valdien = N1,N3-bis(3-methoxysalicylidene) diethylenetriamine, the terminal ligand L = NO3– (1), CH3COO– (2), ClCH2COO– (3), Cl2CHCOO– (4), CH3COCHCOCH3– (5), CF3COCHCOCF3– (6), and solvent = 0.5 MeOH (4), 2 CH2Cl2 (5). Systematic increase of the barrier was observed for all complexes with the most drastic increase seen in 6 when the acac ligand of 5 was fluorinated resulting in a 7-fold enhancement of the anisotropic barrier. Ab initio calculations reveal more axial g tensors as well as higher energy first excited Kramers doublets in 4 and 6 leading to higher energy barriers for those complexes.
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Habib F. et al. Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects // Journal of the American Chemical Society. 2013. Vol. 135. No. 36. pp. 13242-13245.
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Habib F., Brunet G., Vieru V., Korobkov I., Chibotaru L., Murugesu M. Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects // Journal of the American Chemical Society. 2013. Vol. 135. No. 36. pp. 13242-13245.
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TY - JOUR
DO - 10.1021/ja404846s
UR - https://doi.org/10.1021/ja404846s
TI - Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects
T2 - Journal of the American Chemical Society
AU - Habib, Fatemah
AU - Brunet, Gabriel
AU - Vieru, Veacheslav
AU - Korobkov, Ilia
AU - Chibotaru, L.F.
AU - Murugesu, Muralee
PY - 2013
DA - 2013/08/27
PB - American Chemical Society (ACS)
SP - 13242-13245
IS - 36
VL - 135
PMID - 23964606
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2013_Habib,
author = {Fatemah Habib and Gabriel Brunet and Veacheslav Vieru and Ilia Korobkov and L.F. Chibotaru and Muralee Murugesu},
title = {Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects},
journal = {Journal of the American Chemical Society},
year = {2013},
volume = {135},
publisher = {American Chemical Society (ACS)},
month = {aug},
url = {https://doi.org/10.1021/ja404846s},
number = {36},
pages = {13242--13245},
doi = {10.1021/ja404846s}
}
Cite this
MLA
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Habib, Fatemah, et al. “Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects.” Journal of the American Chemical Society, vol. 135, no. 36, Aug. 2013, pp. 13242-13245. https://doi.org/10.1021/ja404846s.