Abstract
Three
distorted
square
antiprismatic
eight
coordinated
neodymium
acylpyrazolone
complexes
were
synthesized
having
the
compositions
[Nd(L
1
)
3
(H
2
O)(EtOH)]
(
NdL
),
and
).
The
structure
of
all
three
was
examined
using
ESI‐mass,
FT‐IR,
thermogravimetric
methods.
According
to
single
crystal
analysis
,
complex
found
‐
(NdO8)
with
a
geometry.
A
powder
XRD
pattern
confirmed
similar
structural
arrangement
other
two
complexes.
In
electronic
absorption
spectra,
transition
4
G
5/2
←
I
9/2
which
is
close
centre
visible
spectrum
(~17,500
cm
−1
exhibits
hypersensitivity,
stands
out
in
stark
contrast
behaviour
many
typically
weak
reliably
unchanging,
typical
4f–4f
transitions.
Through
comparative
calculated
oscillator
strength,
Judd‐Ofelt
parameters,
root
mean
deviation,
radiative
lifetime
covalency
parameters
various
solvents,
symmetry
characteristics,
have
been
thoroughly
investigated.
promotion
electric‐dipole
intensity
has
be
particularly
successful
ethanol,
pyridine,
DMF,
DMSO.
Utilizing
Ω
values
Hirshfeld
analysis,
long‐range
secondary
π⋅⋅⋅π
stacking
or
H‐bonding
interactions
emission
quantum
yield,
stokes
shift,
antenna
effect
energy
diagram
solid‐state
spectra.
Nanoscale Advances,
Год журнала:
2024,
Номер
6(7), С. 1932 - 1944
Опубликована: Янв. 1, 2024
Inexpensive,
stable,
selective,
and
recyclable
nanocatalysts,
waste
regeneration,
utilization
of
safe
available
solvents
are
interest
important
factors
in
laboratory
science
industrial
applications
green
chemistry.
Therefore,
herein,
biochar
nanoparticles
(BNPs)
were
synthesized
through
chicken
manure
pyrolysis
as
a
novel
method
for
recycling.
Then,
order
to
improve
their
recyclability,
the
obtained
BNPs
magnetized
using
magnetic
nickel
nanoparticles.
surface
(BMNPs)
was
modified
by
(3-chloropropyl)trimethoxysilane
(3-CPTMS)
further
neodymium
Schiff-base
complex
immobilized
on
BMNPs,
denoted
Nd-Schiff-base@BMNPs.
The
supported
used
practical,
biocompatible,
commercial,
reusable
heterogeneous
nanocatalyst.
support
this
nanocatalyst
formed
from
manure;
therefore,
it
is
cheap,
economically
viable,
also
compatible
with
principles
Nd-Schiff-base@BMNPs
acts
selectively
organic
reactions
can
easily
be
recovered
an
external
magnet
reused,
which
This
characterized
wavelength-dispersive
X-ray
spectroscopy
(WDX),
scanning
electron
microscopy
(SEM),
energy-dispersive
(EDS),
thermogravimetric
analysis
(TGA),
Fourier
transform
infrared
(FT-IR),
inductively
coupled
plasma
(ICP),
N
Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
38(4)
Опубликована: Фев. 18, 2024
In
this
article,
the
mesoporous
silica
framework
of
KIT‐6
was
synthesized
and,
then
its
surface
modified
using
3‐aminopropyltrimethoxysilane
(APTMS).
The
new
KIT‐6@DABP@Cu
nanocatalyst
prepared
by
anchoring
copper
complex
on
KIT‐6.
identified
several
techniques,
including
FT‐IR,
WDX,
AAS,
SEM,
TGA,
XRD,
EDS,
and
BET.
physical
properties,
such
as
size,
shape,
morphology
were
studied
SEM
analysis.
elemental
composition
described
wavelength
dispersive
X‐ray
spectroscopy
(WDX)
EDS.
FT‐IR
used
to
characterize
functional
groups
in
structure
nanoparticles.
stability
TGA
at
high
temperatures.
Also,
area,
total
volume,
average
diameter
pores
determined
Brunauer–Emmett–Teller
(BET)
catalyst
found
be
a
new,
highly
effective,
green
for
synthesizing
5‐substituted‐tetrazoles
nitriles
sodium
azide
(NaN
3
)
catalyzed
polyethyleneglycol‐400
(PEG‐400)
solvent.
This
heterogeneous
showed
good
recyclability
up
five
consecutive
cycles
without
notable
loss
catalytic
efficiency.
Nanoscale Advances,
Год журнала:
2024,
Номер
6(15), С. 3948 - 3960
Опубликована: Янв. 1, 2024
Waste
recycling,
novel
and
easy
methods
of
recycling
catalysts,
use
green
solvents,
selective
catalysts
preventing
the
production
by-products
are
most
important
principles
chemistry
modern
technology.
Therefore,
in
this
work,
biochar
nanoparticles
(B-NPs)
were
synthesized
by
pyrolysis
chicken
manure
as
a
method
for
waste
recycling.
Subsequently,
B-NPs
magnetized
Fe(0)
to
improve
recovery
biochar.
Then,
surface
magnetic
(FeB-MNPs)
was
modified
(3-chloropropyl)trimethoxysilane
(3Cl-PTMS).
Finally,
multidentate
copper
complex
2,2'-(propane-1,3-diylbis(oxy))dianiline
(P.bis(OA))
immobilized
on
FeB-MNPs,
which
labeled
Cu-P.bis(OA)@FeB-MNPs.
Cu-P.bis(OA)@FeB-MNPs
investigated
commercial,
homoselective,
practical,
recyclable
nanocatalyst
synthesis
5-substituted-1
Current Organic Chemistry,
Год журнала:
2024,
Номер
28(2), С. 134 - 160
Опубликована: Янв. 1, 2024
Abstract:
Tetrazole
is
a
most
versatile
pharmacophore
of
which
more
than
twenty
FDAapproved
drugs
have
been
marketed
globally
for
the
management
various
diseases.
In
spite
many
remarkable
and
consistent
efforts
having
made
by
chemists
towards
development
greener
sustainable
strategies
synthesis
tetrazole
derivatives,
this
approach
still
needs
attention.
The
present
review
focuses
on
green
synthetic
preparation
derivatives
from
different
starting
materials
such
as
nitrile,
isonitrile,
carbonyl,
amine,
amide,
oxime
terminal
alkyne
functions.
mechanism
substrates
discussed.
addition
to
this,
four
component
Ugi-azide
reaction
also
described.
Of
note,
articles
exploited
several
water-mediated
solvent-free
methodologies
synthesis.
important
key
features
were
pinpointing
in
each
scheme
provides
excellent
guide
those
searching
selective
procedure
achieve
desired
transformation.
This
seeks
timely
account
(2011-2023)
splendid
array
ecofriendly
procedures
known
today
materials.
rational
enlighten
recent
advancements
substrates.
Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
38(9)
Опубликована: Июль 29, 2024
In
this
work,
KIT‐6@Schiff‐base@Ce
nanocatalyst
was
synthesized
by
immobilizing
the
Ce
complex
on
KIT‐6
mesoporous
silica
framework
modified
with
3‐iodopropyltrimethoxysilane
group.
The
surface
area,
total
volume,
and
average
diameter
of
pores,
physical
properties,
functional
groups,
organic
content,
element
combination
obtained
were
identified
using
different
techniques
including
BET,
FT‐IR,
XRD,
WDX,
SEM,
EDX.
investigated
as
a
novel
stable
reusable
catalyst
excellent
performance
for
selective
synthesizing
sulfoxide
tetrahydrobenzo[b]pyrans.
designed
successfully
oxidized
large
number
sulfides
hydrogen
peroxide
under
solvent‐free
conditions
or
in
ethanol
safe,
green,
available
solvent
good
efficiency
within
short
reaction
times.
Also,
catalyzed
tetrahydrobenzo[b]pyrans
multicomponent
condensation
dimedone,
aldehydes,
malononitrile
water/ethanol
(1:1)
ideal,
green
solvent.
