Tetra-Cationic Distibane Stabilized by Bis(α-iminopyridine) and Its Reactivity
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 16, 2025
The
work
establishes
the
salt
of
a
tetra-cationic
distibane,
[L2Sb2][CF3SO3]4
=
[1]2[OTf]4
(CF3SO3
OTf),
stabilized
by
bis(α-iminopyridine)
ligand
L,
defying
Coulombic
repulsion.
synthetic
approach
involved
dehydrocoupling
reaction
when
mixture
L
and
Sb(OTf)3
in
1:1
ratio
was
treated
with
Et3SiH/LiBEt3H
as
hydride
source.
Compound
also
achieved
from
[LSbCl][OTf]2
precursor
using
Et3SiH.
Dissolution
polar
solvents
unveiled
formation
persistent
L-stabilized
dicationic
Sb(II)
radical
monomer
[1][OTf]2,
while
addition
Me3SiOTf
regenerated
dimer
[1]2[OTf]4.
homolytic
cleavage
Sb–Sb
bond
[1]24+
has
manifested
exchange
reactions
between
Ph2Ch2
(Ch
S,
Se),
giving
[LSb(SPh)][OTf]2
[2][OTf]2
[LSb(SePh)][OTf]2
[3][OTf]2,
respectively,
acetonitrile.
Reaction
p-benzoquinone
gave
[L2Sb2(C6H4O2)][OTf]4
[4][OTf]4.
An
interesting
oxygen
atom
insertion
occurred
2,2,6,6-tetramethylpiperidine-1-oxyl
(TEMPO)
to
give
[L2Sb2O][
OTf]4
[5][OTf]4.
oxo-bridged
compound
[5][OTf]4
obtained
exposure
open
air.
strong
Mn–Mn
[Mn2(CO)10]
could
be
cleaved
reacting
presence
pyridine
form
[LSbMn(CO)5][
OTf]2
[6][OTf]2.
On
other
hand,
[Co2(CO)8]
oxidative
product
[L2Sb2Co(CO)3][OTf]3
[7][OTf]3.
compounds
were
characterized
both
solid
solution
states.
Computational
studies
comprehensive
understanding
experimental
findings.
Язык: Английский
Viewpoints Concerning Crystal Structure from Recent Reports on Schiff Base Compounds and Their Metal Complexes
Symmetry,
Год журнала:
2024,
Номер
16(11), С. 1525 - 1525
Опубликована: Ноя. 14, 2024
Schiff
bases
are
organic
compounds
that
often
used
as
ligands
in
metal
complexes.
In
addition
to
the
C=N
double
bond,
which
is
characteristic
of
bases,
intermolecular
hydrogen
bonds
frequently
observed
both
twisting
planar
substituents
and
geometric
structure
coordination
environment
The
results
crystal
analyses
stored
databases,
can
be
assess
three-dimensional
structures.
To
examine
important
structural
aspects
for
novel
molecular
material
designs,
this
review
examines
discussion
“features”
from
various
viewpoints
based
on
papers
base
complexes
recent
years.
Язык: Английский
PnictogenIII Dications Supported by BZIMPY Ligands
Chemistry - A European Journal,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 22, 2024
Abstract
Two
homologous
series
of
pnictogen(III)
dications,
stabilized
by
2,6‐bis(benzimidazole‐2‐yl)pyridine
ligands
have
been
prepared.
Both
contain
Pn
III
‐X
moieties
(Pn
=
P,
As,
Sb,
Bi;
X
Cl
or
Ph)
and
fully
characterized
using
spectroscopic
methods
including
X‐ray
crystallography.
The
Lewis
acidity
these
compounds
has
also
probed
computational
methods;
the
results
suggest
that
dictations
are
strong
acids,
with
PnCl
2+
being
more
acidic
than
PnPh
compounds,
increasing
from
P
to
Bi,
in
both
series.
PhP
‐containing
compound
was
found
be
a
versatile
transfer
reagent,
leading
new
synthetic
routes
for
various
PhP‐containing
compounds.
redox
chemistry
all
cyclic
voltammetry
chemical
reductions.
In
some
cases
resulting
I
could
trapped
diazabutadienes.
Язык: Английский
Pnictogen Chemistry: From Light to Heavy Compounds
ChemPlusChem,
Год журнала:
2024,
Номер
89(12)
Опубликована: Авг. 23, 2024
Pnictogen
compounds
offer
a
broad
and
highly
tunable
set
of
characteristics,
including
pronounced
Lewis
acidity
basicity,
privileged
ligand
behavior,
the
reversible
switching
between
different
oxidation
states,
accessibility
low-valent
species,
intriguing
photophysical
properties.
In
recent
renaissance
p-block
chemistry,
researchers
are
focusing
their
efforts
to
investigate
exploit
these
properties,
reveal
unprecedented
reactivity
patterns
design
fascinating
applications
based
on
modern
innovative
pnictogen
chemistry.
This
special
issue
presents
current
trends
in
field
Язык: Английский