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@ARTICLE{Nahrstedt:891360,
author = {Nahrstedt, Vanessa and Stadler, Daniel and Fischer, Thomas
and Duchoň, Tomáš and Mueller, David N. and Schneider,
Claus M. and Mathur, Sanjay},
title = {{M}olecular {L}evel {S}ynthesis of {I}n{F}e{O} 3 and
{I}n{F}e{O} 3 /{F}e 2 {O} 3 {N}anocomposites},
journal = {Inorganic chemistry},
volume = {60},
number = {6},
issn = {1520-510X},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {FZJ-2021-01452},
pages = {3719 - 3728},
year = {2021},
abstract = {New heterometallic In–Fe alkoxides [InFe(OtBu)4(PyTFP)2]
(1), [InFe2(OneoPen)9(Py)] (2), and [InFe3(OneoPen)12] (3)
were synthesized and structurally characterized. The
arrangement of metal centers in mixed-metal framework was
governed by the In:Fe ratio and the coordination preferences
of Fe(III) and In(III) centers to be in tetrahedral and
octahedral environments, respectively. 3 displayed a
star-shaped so-called “Mitsubishi” motif with the
central In atom coordinated with three tetrahedral
{Fe(OneoPen)4}− anionic units. The deterministic
structural influence of the larger In atom was evident in 1
and 2 which displayed the coordination of neutral coligands
to achieve the desired coordination number. Thermal
decomposition studies of compounds 1–3 under inert
conditions with subsequent powder diffraction studies
revealed the formation of Fe2O3 and In2O3 in the case of 3
and 2, whereas 1 intriguingly produced elemental In and Fe.
In contrary, the thermal decomposition of 1–3 under
ambient conditions produced a ternary oxide, InFeO3, with
additional Fe2O3 present as a secondary phase in a different
stoichiometric ratio predetermined through the In:Fe ratio
in 2 and 3. The intimate mixing of different phases in
InFeO3/Fe2O3 nanocomposites was confirmed by transmission
electron microscopy of solid residues obtained after the
decomposition of 1 and 2. The pure InFeO3 particles
demonstrated ferromagnetic anomalies around 170 K as
determined by temperature-dependent field-cooled and
zero-field-cooled magnetization experiments. A first-order
magnetic transition with an increase in the ZFC measurements
was explained by temperature-induced reduction of the
Fe–Fe distance and the corresponding increase in
superexchange.},
cin = {PGI-6},
ddc = {540},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / DFG project 274005202 - SPP 1959:
Manipulation of matter controlled by electric and magnetic
fields: Towards novel synthesis and processing routes of
inorganic materials (274005202)},
pid = {G:(DE-HGF)POF4-632 / G:(GEPRIS)274005202},
typ = {PUB:(DE-HGF)16},
pubmed = {33621076},
UT = {WOS:000630142600025},
doi = {10.1021/acs.inorgchem.0c03425},
url = {https://juser.fz-juelich.de/record/891360},
}