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@ARTICLE{Boukhvalov:13146,
author = {Boukhvalov, D. and Dobrovitski, V. and Kögerler, P. and
Al-Saqer, M. and Katsnelson, M. and Lichtenstein, A. and
Harmon, B.},
title = {{E}ffect of ligand substitution on the exchange
interactions in {{M}n12}-type single-molecule magnets},
journal = {Inorganic chemistry},
volume = {49},
issn = {0020-1669},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {PreJuSER-13146},
pages = {10902},
year = {2010},
note = {The work is financially supported by Stichting voor
Fundamenteel Onderzoek der Materie (FOM), The Netherlands.
Work at the Ames Laboratory was supported by the Department
of Energy<SUP>-</SUP>Basic Energy Sciences under Contract
No. DE-AC02-07CH11358.},
abstract = {We investigate how ligand substitution affects the
intramolecular spin exchange interactions, studying a
prototypical family of single-molecule magnets comprising
dodecanuclear cluster molecules
[Mn(III)(8)Mn(IV)(4)O(12)(COOR)(16)]. We identify a simple
scheme based on accumulated Pauling electronegativity
numbers (AEN) of the carboxylate ligand groups (R). The
redistribution of the electron density, controlled by the
AEN of a ligand, changes the degree of hybridization between
3d electrons of manganese and 2p electrons of oxygen atoms,
thus changing the exchange interactions. This scheme,
despite its conceptual simplicity, provides a strong
correlation with the exchange energies associated with
carboxylate bridges and is confirmed by the electronic
structure calculations taking into account the Coulomb
correlations in magnetic molecules.},
keywords = {J (WoSType)},
cin = {IFF-9 / JARA-ENERGY},
ddc = {540},
cid = {I:(DE-Juel1)VDB789 / $I:(DE-82)080011_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Chemistry, Inorganic $\&$ Nuclear},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:21043473},
UT = {WOS:000284518800022},
doi = {10.1021/ic101229p},
url = {https://juser.fz-juelich.de/record/13146},
}