European Journal of Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 12, 2024
Abstract
In
this
research,
we
introduce
new
members
to
the
[Fe(
bz
L)(NCE)
2
]
complex
series
by
incorporating
NCS
−
and
NCBH
3
as
co‐ligands,
expanding
on
our
established
tetradentate
L
ligand.
The
synthesis
of
three
isostructural
structures
has
allowed
for
a
systematic
tuning
SCO
temperatures,
with
T
1/2
values
ranging
from
85
K
S‐α
complex,
featuring
approximately
15
thermal
hysteresis,
194
Se‐α
stable
low‐spin
state
up
300
B‐α
complex.
This
work
demonstrates
efficacy
modulating
properties
through
variation
NCE
ancillary
ligands.
Furthermore,
conducted
comparative
analysis
21
analogs
within
family.
aims
elucidate
similarities
differences
among
complexes
their
correlation
properties,
furthering
understanding
structural
determinants
that
influence
behavior.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(31), P. 21677 - 21688
Published: July 23, 2024
Achieving
high
guest
loading
and
multiguest-binding
capacity
holds
crucial
significance
for
advancement
in
separation,
catalysis,
drug
delivery
with
synthetic
receptors;
however,
it
remains
a
challenging
bottleneck
characterization
of
high-stoichiometry
guest-binding
events.
Herein,
we
describe
large-sized
coordination
cage
(MOC-70-Zn
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(31), P. 22036 - 22046
Published: July 23, 2024
Responsive
spin-crossover
(SCO)
metal–organic
cages
(MOCs)
are
emerging
dynamic
platforms
with
potential
for
advanced
applications
in
magnetic
sensing
and
molecular
switching.
Among
these,
FeIII-based
MOCs
particularly
noteworthy
their
air
stability,
yet
they
remain
largely
unexplored.
Herein,
we
report
the
synthesis
of
two
novel
FeIII
using
a
bis-bidentate
ligand
approach,
which
exhibit
SCO
activity
above
room
temperature.
These
represent
first
SCO-active
feature
an
atypical
{FeN6}-type
coordination
sphere,
uncommon
compounds.
Our
study
reveals
that
these
sensitive
to
acid/base
variations,
enabling
reversible
switching
solution.
The
presence
multiple
active
proton
sites
within
SCO-MOCs
facilitates
multisite,
multilevel
proton-induced
spin-state
modulation.
This
behavior
is
observed
at
temperature
through
1H
NMR
spectroscopy,
capturing
subtle
transitions
triggered
by
pH
changes.
Further
insights
from
extended
X-ray
absorption
fine
structure
(EXAFS)
theoretical
analyses
indicate
alterations
primarily
result
protonation
deprotonation
processes
NH
on
ligands.
induce
changes
secondary
thereby
modulating
properties
cages.
capability
integrate
responses
environmental
stimuli
underscores
as
finely
tunable
sensors
highlights
versatility
switches.
work
paves
way
development
materials
tailored
Inorganic Chemistry Frontiers,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
article
presents
the
influence
of
lanthanide
size
and
ligands
conformational
flexibility
on
assemblies
their
corresponding
luminescent
properties.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(36)
Published: June 14, 2024
Polyradical
cages
are
of
great
interest
because
they
show
very
fascinating
physical
and
chemical
properties,
but
many
challenges
remain,
especially
for
their
synthesis
characterization.
Herein,
we
present
the
a
polyradical
cation
cage
1
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(32), P. 14924 - 14932
Published: June 19, 2024
Research
on
the
synthesis
of
catenated
cages
has
been
a
growing
field
interest
in
past
few
years.
While
multiple
types
with
different
structures
have
synthesized,
application
such
systems
much
less
explored.
Specifically,
use
separation
industrially
relevant
molecules
that
are
present
coal
tar
not
explored
before.
Herein,
we
demonstrate
newly
synthesized
interlocked
cage
1
[C184H240N76O48Pd6]
(M6L4),
formed
through
self-assembly
ligand
L.HNO3
(tris(4-(1H-imidazole-1-yl)benzylidene)hydrazine-1-carbohydrazonhydrazide)
acceptor
cis-[(tmchda)Pd(NO3)2]
[tmchda
=
±N,N,N′,N′-tetramethylcyclohexane-1,2-diamine]
(M).
The
was
able
to
separate
isomers
(anthracene
and
phenanthrene)
using
simple
solvent
extraction
technique.
Using
same
technique,
more
difficult
structurally
physiochemically
similar
compounds
acenaphthene
acenaphthylene
performed
for
first
time
as
host.
Other
noninterlocked
hexanuclear
Pd6
having
wider
cavity
proved
inefficient
separation,
demonstrating
uniqueness
challenging
separation.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(36)
Published: June 14, 2024
Abstract
Polyradical
cages
are
of
great
interest
because
they
show
very
fascinating
physical
and
chemical
properties,
but
many
challenges
remain,
especially
for
their
synthesis
characterization.
Herein,
we
present
the
a
polyradical
cation
cage
1
4
.
+
through
post‐synthetic
oxidation
redox‐active
phenothiazine‐based
Pd
2
L
‐type
coordination
It′s
worth
noting
that
exhibits
excellent
reversible
electrochemical
redox
activity
due
to
introduction
bulky
3,5‐di‐
tert
‐butyl‐4‐methoxyphenyl
substituent.
The
generation
is
investigated
by
in
situ
UV/Vis‐NIR
EPR
spectroelectrochemistry.
Meanwhile,
can
also
produce
which
be
reversibly
reduced
back
original
,
process
monitored
NMR
spectroscopies.
Eventually,
succeed
isolation
single
crystal
X‐ray
diffraction
analysis
whose
electronic
structure
conformation
distinct
magnetic
susceptibility
measurements
indicate
predominantly
antiferromagnetic
interactions
between
four
phenothiazine
radical
cations
We
believe
our
study
including
facile
methodology
spectroelectrochemistry
will
shed
some
light
on
characterization
novel
systems,
opening
more
perspectives
developing
functional
supramolecular
cages.
