Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
38(12)
Опубликована: Авг. 29, 2024
ABSTRACT
Two
novel
tetra‐
and
hepta‐nuclear
Ni(II)
salamo‐type
clusters,
[Ni
4
(L)
2
(
μ
‐Cl)
3
‐OH)
(EtOH)
]⋅4CH
Cl
1
)
7
‐OEt)
6
]
),
were
constructed
by
modulating
different
anions
(Cl
−
NO
).
X‐ray
crystallographic
researches
revealed
that
cluster
is
a
tetranuclear
consisting
of
symmetric
binuclear
structure
in
which
chloride
ions
are
involved
coordination.
Although
consists
seven
ions,
three
deprotonated
2−
parts,
two
‐ethoxy
groups,
six
‐OH
anions,
coordinated
ethanol
molecules,
it
quite
rare
for
large
number
water
molecules
to
be
participate
the
bridging
due
alkaline
environment.
TEM
electron
scanning
displayed
distinct
shapes.
Comparison
DFT
calculations
less
chemically
reactive
more
kinetically
stable,
accordance
with
analytical
results
weak
interactions,
where
stronger
interaction
forces
presented,
stable
molecule
is.
Finally,
comparative
analysis
UV–Vis,
IR,
fluorescence
spectra
carried
out.
Crystal Growth & Design,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Four
distinct
polynuclear
Ni(II)
complexes,
namely
[Ni2L2(py)2]
(1),
[Ni3L2(μ3-OAc)2]·4CH3CN
(2),
[Ni4L2(μ2-OAc)2(μ3-OMe)2(H2O)2]·MeOH
(3),
and
[Ni7L3(μ3-OMe)2(μ3-OH)6(MeOH)6]
(4),
have
been
synthesized
characterized
based
on
the
salamo
Schiff
base
ligand
H2L.
Ultraviolet–visible
titration
experiments
time-dependent
density
functional
theory
calculations
elucidated
that
different
reaction
conditions
(solvents
metal–ligand
molar
ratio)
result
in
formation
of
these
structures.
Magnetic
investigations
revealed
presence
intramolecular
ferromagnetic
coupling
between
centers
complexes
2–4.
Journal of Coordination Chemistry,
Год журнала:
2024,
Номер
77(9-10), С. 991 - 1002
Опубликована: Май 18, 2024
Two
new
zinc(II)
complexes,
[Zn2(PBM)2(terephthalate)(formate)2]
(1)
and
{[Zn(PBM)(fumarate)]∙H2O}n
(2),
were
synthesized
using
1,3-bis(1H-benzo[d]imidazol-2-yl)propane
(PBM)
two
different
dicarboxylic
acids
under
solvothermal
conditions.
Complexes
1
2
have
been
characterized
by
infrared
spectroscopy,
elemental
analysis,
single-crystal
X-ray
diffraction
analysis.
The
structural
analysis
showed
that
was
a
binuclear
structure
then
formed
3D
supramolecular
network
through
hydrogen
bond
π-π
conjugation,
while
one-dimensional
coordination
polymer.
In
2,
the
zinc
ions
four-coordinate
with
an
N2O2
donor
set
slightly
distorted
tetrahedral
geometry.
solid-state
fluorescence
properties
indicate
peaks
belong
to
π*-π
transition
of
ligand
PBM,
which
has
significant
red
shift
enhancement
order
being
>
PBM.
stronger
complexes
than
is
due
immobilization
coordination,
reduces
energy
loss
thermal
vibration.
π∙∙∙π
conjugation
in
results
2.
Therefore,
will
affect
complexes.
Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
38(12)
Опубликована: Авг. 29, 2024
ABSTRACT
Two
novel
tetra‐
and
hepta‐nuclear
Ni(II)
salamo‐type
clusters,
[Ni
4
(L)
2
(
μ
‐Cl)
3
‐OH)
(EtOH)
]⋅4CH
Cl
1
)
7
‐OEt)
6
]
),
were
constructed
by
modulating
different
anions
(Cl
−
NO
).
X‐ray
crystallographic
researches
revealed
that
cluster
is
a
tetranuclear
consisting
of
symmetric
binuclear
structure
in
which
chloride
ions
are
involved
coordination.
Although
consists
seven
ions,
three
deprotonated
2−
parts,
two
‐ethoxy
groups,
six
‐OH
anions,
coordinated
ethanol
molecules,
it
quite
rare
for
large
number
water
molecules
to
be
participate
the
bridging
due
alkaline
environment.
TEM
electron
scanning
displayed
distinct
shapes.
Comparison
DFT
calculations
less
chemically
reactive
more
kinetically
stable,
accordance
with
analytical
results
weak
interactions,
where
stronger
interaction
forces
presented,
stable
molecule
is.
Finally,
comparative
analysis
UV–Vis,
IR,
fluorescence
spectra
carried
out.
