Dynamic magnetic characteristics and hysteresis behaviors of X540@Y540: a Monte Carlo study
Physica A Statistical Mechanics and its Applications,
Год журнала:
2025,
Номер
unknown, С. 130446 - 130446
Опубликована: Фев. 1, 2025
Язык: Английский
Thirty Years of Hide-and-Seek: Capturing Abundant but Elusive MIII@C3v(8)-C82 Isomer, and the Study of Magnetic Anisotropy Induced in Dy3+ Ion by the Fullerene π-Ligand
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(36), С. 25328 - 25342
Опубликована: Сен. 2, 2024
Our
knowledge
about
endohedral
metallofullerenes
(EMFs)
is
restricted
to
the
structures
with
sufficient
kinetic
stability
be
extracted
from
arc-discharge
soot
and
processed
by
chromatographic
structural
techniques.
For
most
abundant
rare-earth
monometallofullerene
M
Язык: Английский
Pyramidal Nd2ScN inside an icosahedral C80 cage
Inorganic Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
pyramidal
Nd
2
ScN
cluster
was
trapped
in
a
C
80
fullerene
cage.
The
precise
structure
unambiguously
elucidated
by
single
crystal
X-ray
diffraction
with
four
sites
of
the
light
N
atom.
Язык: Английский
Anomalous Magnetic Hysteresis up to 20 K in a Non‐Kramers Light‐Lanthanide Single‐Molecule Magnet
Angewandte Chemie International Edition,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Abstract
Light‐lanthanides
(Ln),
despite
their
widespread
uses
in
commercial
permanent
magnets,
are
among
the
least
explored
metal
elements
as
building
blocks
of
single‐molecule
magnets
(SMMs)
due
to
smaller
magnetic
moments
well
weaker
spin–orbit
couplings
than
those
heavy‐Ln
counterparts,
and
so
far,
only
a
neodymium
(Nd)
complex
has
been
reported
showing
small
hysteresis
at
2
K.
Here,
we
report
low‐coordination
praseodymium
(Pr)
complex,
namely,
Pr@C
81
N,
featuring
non‐Kramers
trivalent
Pr
ion
entrapped
within
an
azafullerene
cage
behaving
first
Pr‐based
SMM.
Although
weak
nonaxial
ligand
field
imposed
by
carbon
on
integer‐spin
Pr(III)
elicits
nondegenerate
spin
states,
N
shows
anomalous
up
20
K
using
sweep
rate
Oe/s,
which
is
highest
temperature
all
light‐Ln
SMMs.
In
addition
ideally
minimized
spin–phonon
coupling
low
coordination,
origin
such
unexpected
bistability
for
likely
lies
nuclear
sublevels
arising
from
large
hyperfine
coupling,
feature
distinct
electronic
magnetizations
highly
mixed
ground
state.
Язык: Английский
Anomalous Magnetic Hysteresis up to 20 K in a Non‐Kramers Light‐Lanthanide Single‐Molecule Magnet
Angewandte Chemie,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Abstract
Light‐lanthanides
(Ln),
despite
their
widespread
uses
in
commercial
permanent
magnets,
are
among
the
least
explored
metal
elements
as
building
blocks
of
single‐molecule
magnets
(SMMs)
due
to
smaller
magnetic
moments
well
weaker
spin–orbit
couplings
than
those
heavy‐Ln
counterparts,
and
so
far,
only
a
neodymium
(Nd)
complex
has
been
reported
showing
small
hysteresis
at
2
K.
Here,
we
report
low‐coordination
praseodymium
(Pr)
complex,
namely,
Pr@C
81
N,
featuring
non‐Kramers
trivalent
Pr
ion
entrapped
within
an
azafullerene
cage
behaving
first
Pr‐based
SMM.
Although
weak
nonaxial
ligand
field
imposed
by
carbon
on
integer‐spin
Pr(III)
elicits
nondegenerate
spin
states,
N
shows
anomalous
up
20
K
using
sweep
rate
Oe/s,
which
is
highest
temperature
all
light‐Ln
SMMs.
In
addition
ideally
minimized
spin–phonon
coupling
low
coordination,
origin
such
unexpected
bistability
for
likely
lies
nuclear
sublevels
arising
from
large
hyperfine
coupling,
feature
distinct
electronic
magnetizations
highly
mixed
ground
state.
Язык: Английский
Structural, electronic, and magnetic properties of M12C80 clusters (M = Mo, W): A new class of magnetic fullerene-like materials
Computational Materials Science,
Год журнала:
2025,
Номер
253, С. 113848 - 113848
Опубликована: Март 25, 2025
Язык: Английский
Fullerene rotation dictated by benzene–fullerene interactions
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(12), С. 3458 - 3464
Опубликована: Янв. 1, 2024
The
temperature-driven
dynamics
of
Dy
2
ScN@C
80
in
the
crystal
was
rigorously
visualized
with
single
X-ray
diffraction,
indicating
a
surprising
effect
benzene
positions
dictating
fullerene
rotation.
Язык: Английский
Capturing Metal Fluoride inside a Carbon Cage
Ya Zhao,
Ziqi Hu,
Panfeng Chuai
и другие.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(25), С. 17003 - 17008
Опубликована: Июнь 12, 2024
We
report
here
a
new
type
of
metal
fluoride
cluster
that
can
be
stabilized
inside
fullerene
via
in
situ
fluorine
encapsulation
followed
by
exohedral
trifluoromethylation,
giving
rise
to
rare-earth
clusterfullerenes
(FCFs)
M2F@C80(CF3)
(M
=
Gd
and
Y).
The
molecular
structure
Gd2F@C80(CF3)
was
unambiguously
determined
single-crystal
X-ray
analysis
show
μ2-fluoride-bridged
Gd–F–Gd
with
short
Gd–F
bonds
2.132(7)
2.179(7)
Å.
19F
NMR
spectrum
the
diamagnetic
Y2F@C80(CF3)
confirms
existence
endohedral
F
atom,
which
exhibits
triplet
large
19F–89Y
coupling
constant
74
Hz
high
temperature
sensitivity
chemical
shift
0.057
ppm/K.
Theoretical
studies
reveal
ionic
Y–F
bonding
nature
arising
from
highest
electronegativity
element
an
electronic
configuration
[Y2F]5+@[C80]5–
open-shell
carbon
cage,
thus
necessitates
stabilization
FCFs
trifluoromethylation.
Язык: Английский
The hidden features of fullerene rotation in the crystal lattice
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(19), С. 6343 - 6349
Опубликована: Янв. 1, 2024
Variable-temperature
single-crystal
X-ray
diffraction
elaborated
the
phase
transition
in
Sc
3
N@C
70
crystals
and
allowed
to
distinguish
hidden
static
disorder
from
dynamic
caused
by
thermal
motion.
Язык: Английский
An interplay between metal–fullerene and metal–metal bonding in molecular magnetism of erbium metallofullerenes
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(20), С. 7126 - 7141
Опубликована: Янв. 1, 2024
An
interplay
between
magnetic
anisotropy,
Er⋯Er
coupling,
and
bonding
interactions
in
erbium
mono-
dimetallofullerenes
is
studied
by
EPR,
photoluminescence,
SQUID
magnetometry,
ab
initio
calculations.
Язык: Английский