ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 6, 2024
Abstract
Transition
metal
catalysis
plays
a
pivotal
role
in
chemical
synthesis.
Noble
metals
often
grab
significant
attention
organometallic
due
to
their
high
reactivity.
However,
the
serious
issues
associated
with
these
such
as
low
abundance,
toxicity,
geopolitical
limitations,
and
volatile
prices
are
driving
scientific
community
discover
sustainable
alternatives.
In
this
context,
iron
appears
be
first
choice
an
alternative
its
unique
properties,
including
range
of
stable
oxidation
states,
Lewis
acidity,
abundance
earth‘s
crust,
toxicity.
Over
past
two
decades,
substantial
progress
has
been
made
catalysis.
This
overview
examines
recent
developments
iron‐catalyzed
industrially
relevant
transformations
hydroformylation,
olefin
isomerization,
hydrosilylation,
hydrophosphination,
carbonylation,
Wacker‐type
oxidation,
plastic
depolymerization.
As
witnessed
throughout
review,
performance
can
significantly
altered
by
suitable
ligand
selection
tailoring
electronic
steric
properties
center.
While
noble
remain
industry
work‐horse,
is
inching
closer
extensive
understanding,
it
may
replace
near
future.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 26, 2025
Modulation
of
electronic
spin
states
in
cobalt-based
catalysts
is
an
effective
strategy
for
molecule
activations.
Crystalline-amorphous
interfaces
often
exhibit
unique
catalytic
properties
due
to
disruptions
long-range
order
and
alterations
structure.
However,
the
mechanisms
activation
at
remain
elusive.
Herein,
we
present
a
Co3O4
spinel-based
catalyst
featuring
crystalline-amorphous
interfaces.
Characterization
analyses
confirm
that
tetrahedral
Co2+
selectively
etched
from
bulk
spinel,
forming
amorphous
CoO
islands
on
surface.
The
resultant
symmetry
breaking
coordination
field
induces
reconstruction
Co3+
3
d
orbitals,
leading
high-spin
states.
In
CO
oxidation,
interface
serves
as
novel
active
sites
with
lower
energy
barrier,
facilitated
by
lattice
oxygen
activation.
N2O
decomposition,
promotes
reassociation
dissociated
through
quantum
exchange
interactions.
This
work
provides
straightforward
approach
modulating
state
elucidates
their
role
properties,
but
molecular
these
study
presents
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 26, 2024
Abstract
Electrospinning
is
a
significant
manufacturing
strategy
to
create
micro/nanofiber
platforms
that
can
be
considered
biomedical
scaffold
for
tissue
engineering
repair
and
regeneration.
In
recent
years
researchers
have
continuously
broadened
the
equipment
design
materials
development
of
electrospinning
nanofiber
(ENPs),
which
evolved
from
single‐needle
multi‐needle
creating
3D
ENPs,
diversify
their
application
including
drugs/cell/growth
factors
release,
anti‐bacterial
anti‐inflammatory,
hemostasis,
wound
healing,
Herein,
multifunctional
ENPs
with
bioactive
polymer
fabricated
via
in
terms
novel
material
design,
construction
various
structures,
requirements
different
regeneration
are
reviewed.
Furthermore,
this
review
delves
into
advancements
facilitated
by
highlighting
effectiveness
versatility
across
types
such
as
bone,
cartilage,
tendons,
cardiac
tissue,
nerves.
The
discussion
comprehensively
addresses
ongoing
challenges
selection,
biodegradation
mechanisms,
bioactivation
strategies,
techniques
specific
applications.
Moreover,
outlines
potential
future
research
avenues
aimed
at
enhancing
ENPs‐based
approaches
engineering.
This
in‐depth
analysis
aims
provide
nuanced
insights
technical
recommendations
propel
field
forward
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(8), P. 5051 - 5055
Published: Feb. 19, 2024
The
construction
of
quaternary
carbon
centers
via
C–C
coupling
protocols
remains
challenging.
tertiary
C(sp3)
with
secondary
or
counterparts
has
been
hindered
by
pronounced
steric
clashes
and
many
side
reactions.
Herein,
we
have
successfully
developed
a
type
bisphosphine
ligand
iron
complex-catalyzed
reactions
alkyl
halides
zinc
reagents
efficiently
realized
the
reaction
between
high
selectivity
for
initial
instance,
which
provided
an
efficient
method
hindrance.
combination
catalyst
directing
group
substrate
makes
great
challenging
transformation
possible.
Catalysis Science & Technology,
Journal Year:
2024,
Volume and Issue:
14(10), P. 2752 - 2760
Published: Jan. 1, 2024
Low-valent
Fe-(0)
catalyzes
the
hydrosilylation
of
alkynes
at
60–120
°C,
exhibiting
a
broad
substrate
scope
and
tolerating
functional
groups.
Mechanistic
investigations,
kinetic
studies
DFT
suggest
that
reaction
follows
Chalk–Harrod
mechanism.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Oct. 4, 2024
The
challenging
synthesis
of
thermodynamic-unfavored
cis-olefins
through
catalytic
cross-coupling
reactions
requires
the
synergistic
interaction
substrate-activating
units
and
configuration-regulating
catalysts.
Successfully
hitting
these
two
birds
with
one
stone,
we
herein
develop
a
convenient
photoredox
access
to
Z-alkenes
from
alkynes
light
alkanes
bifunctional
iron-catalyzed
system
possessing
both
C(sp
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 22, 2025
The
limited
availability
of
efficient
synthetic
methods
for
organoaluminum
compounds
constrains
their
broader
applications.
transfer
hydroalumination
alkynes
emerges
as
a
promising
strategy
synthesizing
alkenylaluminum
species;
however,
achieving
precise
control
the
selectivity
remains
formidable
challenge.
Herein,
we
disclose
highly
chemo-,
regio-,
and
stereoselective
alkynes,
catalyzed
by
well-defined
iron
complexes,
utilizing
commercially
available
AlEt3
reagent.
regioselectivity
reaction
involving
terminal
can
be
effectively
modulated
changing
2,9-aryl
substituents
on
ligands
with
observation
cis-α-selectivity
not
previously
documented
in
literature.
Furthermore,
demonstrate
unprecedented
cis-β-selective
simple
unsymmetrical
internal
alkynes.
This
work
only
broadens
scope
reactions
but
also
enhances
methodologies
diversity
compounds,
highlighting
significant
potential
catalysts
development
organometallic
reagents.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(21)
Published: March 12, 2024
Abstract
The
nuanced
role
of
spin
effects
remains
a
critical
gap
in
designing
proficient
open‐shell
catalysts.
This
study
elucidates
an
iron‐catalyzed
allylic
C(
sp
3
)−H
silylation/alkyne
hydrosilylation
reaction,
which
the
state
iron
catalyst
dictates
reaction
kinetics
and
pathway.
Specifically,
crossover
led
to
alkyne
hydrosilylation,
whereas
conservation
resulted
novel
silylation
reaction.
chemoselectivity,
governed
by
spin‐crossover
efficiency,
reveals
unexpected
dimension
first
realm
transition‐metal‐catalyzed
situ
bonds,
had
been
previously
inhibited
heightened
reactivity
alkenes
reactions.
Furthermore,
this
can
either
accelerate
or
hinder
at
different
stages
within
single
catalytic
phenomenon
scarcely
documented.
Moreover,
we
identify
substrate‐assisted
C−H
activation
mechanism,
departure
from
known
ligand‐assisted
processes,
offering
fresh
perspective
on
strategies.
Physical Chemistry Chemical Physics,
Journal Year:
2024,
Volume and Issue:
26(34), P. 22620 - 22639
Published: Jan. 1, 2024
Catalysis
is
a
quantum
phenomenon
enthalpically
driven
by
electronic
correlations
with
many-particle
effects
in
all
of
its
branches,
including
electro-photo-catalysis
and
electron
transfer.
This
means
that
only
probability
amplitudes
provide
complete
relationship
between
the
state
catalysis
observations.
Thus,
any
atomic
system
material),
competing
space-time
interactions
coexist
to
define
(related)
properties
such
as
stability,
(super)conductivity,
magnetism
(spin-orbital
ordering),
chemisorption
catalysis.
Catalysts,
reactants,
chemisorbed
transition
states
have
possibility
optimizing
improve
reaction
kinetics.
Active
sites
closed-shell
orbital
configurations
share
maximum
number
spin-paired
electrons,
mainly
coulombic
attractions
covalency
defining
weakly
correlated
(WCCS)
structures.
However,
compositions
open-shell
configurations,
at
least,
spin
exchange
(QSEIopenshells)
arise,
stabilising
unpaired
electrons
less
covalent
bonds
differentiating
non-weakly
(or
strongly)
(NWCOS)
systems.
In
NWCOS
catalysts,
ground
can
diverse
rival
spin-orbital
orderings
well
ferro-,
ferri-
multiple
antiferro-magnetic
textures,
which
deeply
their
activities.
Particularly
inter-atomic
ferromagnetic
(FM)
bonds,
increase
relevance
non-classical
potentials
significantly
optimize
energies,
(TSs),
activation
energies
(overpotential)
spin-dependent
transfer
(conductivity),
overall
implying
need
for
explaining
thermodynamic
kinetic
origin
from
true
energy.
To
do
so,
we
use
connection
Born-Oppenheimer
approximation
Virial
theorem
treatment
potential
energies.
exact
fundamental
decompose
TSs
appear.
The
increasing
stabilization
TSs,
due
on
NWCO
opens
simultaneously
reducing
enthalpies
barriers
mechanisms,
implies
anticipation
explanation
positive
deviations
Brønsted-Evans-Polanyi
principle.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(16), P. 12163 - 12172
Published: July 30, 2024
The
field
of
iron
catalysis
often
faces
hurdles
in
accommodating
its
transient
and
unstable
low-valent
intermediates.
By
harnessing
the
noninnocent
character
commercial
bathocuproine
ligand,
we
managed
to
develop
a
reliable
functionalization
alkynes
with
primary,
secondary,
tertiary
silanes
but
also
germanium
hydrides,
catalyzed
by
complex.
robustness
catalyst
enabled
gram-scale
synthesis
vinylsilanes,
low
catalytic
loading,
one-pot,
hetero,
bis-hydrosilylation,
high
steric
build-up.
Mechanistic
studies
suggest
an
important
effect
MgII
cation
resulting
from
reduction
precatalyst,
assisting
dynamic
generation
highly
reactive,
under-coordinated
species
stable
