Polyoxometalates,
Journal Year:
2023,
Volume and Issue:
3(1), P. 9140046 - 9140046
Published: Nov. 24, 2023
The
application
of
polyoxometalate
(POM)
as
building
blocks
to
construct
chiral
POM-based
functionalized
frameworks
remains
a
long-standing
challenge.
In
this
study,
we
report
assembly
by
blending
inorganic
POMs
and
organic
cyclodextrin
(α-CD)
molecules
on
the
basis
coordination
interactions.
{SiW12}
anions
connect
with
Mn
ions
(Mn2+)
antiparallel
form
unique
all-inorganic
layer
significant
voids.
similar
α-CD
layered
structure
fills
voids
POM–Mn
layers,
which
are
interwoven
an
organic–inorganic
hybrid,
is
extended
Na+
produce
three-dimensional
framework.
stability,
separation,
catalysis,
proton
conductivity
composite
framework
explored.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(19), P. 8919 - 8924
Published: May 3, 2024
The
introduction
of
transition
metal
(TM)
ions
into
polyoxometalates
(POMs)
cannot
only
bring
about
interesting
structural
diversities
but
also
enable
changes
in
properties.
However,
TM-containing
Silverton-type
polyoxomolybdates
are
still
lacking
terms
diversity
and
application
development.
Herein,
two
Zn(II)-containing
{UMo12O42}-based
polyoxomolybdates,
H1.89Na4.11(H2O)9Zn[UMo12O42]·4.5H2O
(Zn-1)
H1.8Na4.2(H2O)12Zn[UMo12O42]
(Zn-2)
were
hydrothermally
synthesized,
demonstrating
a
practical
strategy
to
assembly
POMs.
Zn-1
is
proven
be
an
excellent
recyclable
heterogeneous
catalyst
cross-dehydrogenation
coupling
1,4-naphthoquinones
with
amines
reactions,
series
2-amino-1,4-naphthoquinones
potential
medicinal
value
have
been
constructed.
Polyoxometalates,
Journal Year:
2024,
Volume and Issue:
3(3), P. 9140061 - 9140061
Published: Feb. 19, 2024
The
design
and
synthesis
of
a
bifunctional
catalyst
to
tackle
environmental
pollution
caused
by
2-chloroethyl
ethyl
sulfide
(CEES)
phenolic
compounds
is
meaningful.
In
this
study,
new
three-dimensional
(3D)
polyoxovanadate
(POV)-based
metal–organic
framework,
[Co(L)(V4O12)0.5(H2O)]·2H2O
(1;
L
=
N,N'-bis(3-methylpyridin-3-yl)-2,6-naphthalenediamide),
was
synthesized
under
hydrothermal
conditions.
1
characterized
using
single-crystal
X-ray
diffraction
analysis,
infrared
spectroscopy,
powder
diffraction.
Structural
analysis
shows
that
the
[V4O12]4–
clusters
pairs
Co2+
cations
are
alternately
connected
form
one-dimensional
inorganic
chain,
eventually
generating
3D
(4,4)-connected
framework
through
expansion
L,
which
exhibits
two
fold
interpenetration
array.
As
catalyst,
satisfactory
catalytic
properties
for
selective
oxidation
corresponding
sulfoxide,
with
an
effective
conversion
>
99%
selectivity
97%.
Furthermore,
excellent
photocatalytic
degradation
activity
toward
phenol,
2-chlorophenol,
m-cresol
visible
light.
efficiencies
were
above
92.6%
140
min.
reaction
kinetics,
mechanisms
photodegradation,
recycling
capability
phenol
also
investigated
in
detail.
Polyoxometalates,
Journal Year:
2023,
Volume and Issue:
3(1), P. 9140048 - 9140048
Published: Nov. 30, 2023
N-heterocycle
compounds
are
the
crucial
scaffolds
present
in
natural
products,
synthetic
molecules,
agricultural
chemicals,
and
pharmaceuticals.
Hence,
development
of
green
catalytic
systems
for
constructing
N-heterocycles
has
been
a
focused
topic
organic
synthesis
industrial
catalysis.
Polyoxometalates
(POMs)
polynuclear
metal–oxygen
clusters
with
structural
diversity
physicochemical
properties.
POMs
possess
advantageous
properties
such
as
adjustable
acidity,
redox
properties,
high
thermal
stability,
non-toxic
nature.
Therefore,
have
widely
investigated
their
application
hold
great
potential
applications.
In
this
review,
we
summarized
recent
progress
(mainly
from
2010
to
2023)
catalyzed
by
heteropolyacids
(HPAs),
modified
HPA
catalysts,
transition
metal-modified
POMs.
The
synthesized
include
pyrroles,
indoles,
pyridines,
benzodiazepines,
among
others.
Furthermore,
prospects
POMs-based
were
also
proposed.
Polyoxometalates,
Journal Year:
2023,
Volume and Issue:
3(1), P. 9140039 - 9140039
Published: Oct. 6, 2023
Under
hydrothermal
condition,
a
new
Keggin-type
polyoxometalate(POM)-based
metal-organic
complex,
namely
H4{[Cu4(EDDP)2(H2O)5]1.5(SiW12O40)}∙7.5H2O
(CuW-EDDP,
H4EDDP
=
ethylenediamine-N,N'-dipropionic
acid)
was
synthesized
by
reaction
of
Na10[A-α-SiW9O34]·18H2O
and
CuCl2·2H2O
in
the
presence
ligand
characterized
X-ray
diffraction
(powder,
single-crystal),
Infrared
radiation
(IR)
spectra,
elemental
analysis,
thermogravimetry.
Interestingly,
CuW-EDDP
features
three-dimensional
structure
with
(4,6)-connected
built
up
from
[SiW12O40]4-
units
tetranuclear-copper
complexes
[Cu4(EDDP)2(H2O)5].
CuW-EDDP
as
an
effective
heterogeneous
catalyst
exhibited
excellent
performance,
good
reusability
structural
stability
selective
oxidation
methyl
phenyl
sulfide
(MPS)
high
conversion
(100%)
selectivity
(98%)
within
30
min.
Furthermore,
catalytic
activity
toward
other
derivatives
also
investigated.
Inorganic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(5), P. 1339 - 1365
Published: Jan. 1, 2024
The
review
covers
POMOF
materials
synthesis,
modification,
and
unique
properties,
focusing
on
biomedical
sensors
therapies.
Finally,
the
summarises
challenges
developments
of
POMOFs
in
biomedicine.
