A
flexible
bisacylhydrazone
ligand
(H4L)
was
designed
and
synthesized
from
the
condensation
reaction
of
dialdehyde
3,3’-thiobis(methyiene)-bis-(5-methyl-salicylaldehyde)
(b)
with
isonicotinic
hydrazide.
In
DMSO/methanol
solution,
two
coordination
polymers
(CPs),
formulated
as
{[Ag(H4L)NO3]·DMSO·2H2O}n
(CP
1)
{[Zn2(H2L2-)2]·3DMSO·3H2O}n
2),
were
H4L
Ag(I)
or
Zn(II)
ions,
respectively.
These
CPs
characterized
via
elemental
analysis,
FT-IR
spectra,
single
crystal
X-ray
determination.
The
results
show
that
CP
1
exists
a
1D
looped-chain
polymer,
while
2
2D
sheet
polymer.
configurations
analyzed
compared
in
detail,
which
disclose
terminal
pyridyl
nitrogen
atoms
exhibit
obviously
stronger
ability
to
other
sites.
addition,
photophysical,
electrochemical
antibacterial
properties
investigated.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Abstract
The
Schiff
base
condensation
reaction
between
precursor
diamine
N,N'-bis(2-aminophenyl)-pyridine-2,6-dicarboxamide
and
1,8-naphthyridine-2-carbaldehyde
yielded
a
racemic
compound
(LP/LM),
which
was
characterized
by
1H/13C
NMR,
infrared
spectroscopy,
elemental
analysis,
single
crystal
X-ray
diffraction.
Three
complexes,
[Hg2LI4]
(1),
[Hg2LBr4]
(2),
[Hg2L2Cl4]‧2H2O
(3)
with
different
coordination
configurations
were
obtained
from
the
of
this
HgX2
(X
=
I−,
Br−,
Cl−),
respectively,
their
structures
geometries
determined
via
diffraction
techniques.
Both
12
exist
as
dinuclear
complexes
1:2
molar
ratio
L
Hg(II),
while
3
exists
44-membered
metallamacrocycle
1:1
Hg(II).
structural
diversity
these
three
indicates
that
counter
anions
have
significant
effects
on
topology.
In
addition,
solid-state
luminescence
gas
adsorption
towards
methanol
vapor
at
room
temperature
investigated.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(5), P. 1104 - 1104
Published: Feb. 27, 2025
This
review
provides
an
overview
of
the
synthesis,
characterization
and
application
coordination
polymers
based
on
N,O-donor
Schiff
base
ligands.
The
(CPs)
represent
a
novel
class
inorganic-organic
hybrid
materials
with
tunable
compositions
fascinating
structures.
They
are
composed
metal
ions
organic
Therefore,
nature
ion
type
ligand
is
most
significant
factor
in
constructing
targeted
desired
properties.
Due
to
versatile
modes,
ligands
also
used
construct
various
CPs.
Asian Journal of Chemical Sciences,
Journal Year:
2024,
Volume and Issue:
14(3), P. 15 - 26
Published: May 4, 2024
A
new
Co(III)
complex
prepared
by
the
reaction
of
N'–(1–(pyridin–2
yl)ethylidene)
isonicotinohydrazide
(H2L)
with
Co(II)
ion
is
reported
in
this
paper.
The
H2L
ligand
structurally
characterized
elemental
analysis,
NMR,
and
infrared
spectroscopies.
mononuclear
[Co(HL)2]·Cl·3H2O
(1),
spectroscopy,
conductance,
magnetic
room
temperature
measurement
single
X-ray
diffraction.
crystallizes
monoclinic
system
space
group
P21/c.
parameters
unit
cell
are
a
=
9.6818(3)
Å;
b
25.1587(6)
c
11.5481(3)
β
101.797(3)
°;
Z
4;
Rint
0.0313
wR(F2)
0.0812.
asymmetric
compound
contains
discrete
[Co(HL)2]+
cation
one
free
chloride
anion
three
uncoordinated
water
molecules.
In
Co3+
two
organic
molecules
present.
coordination
polyhedron
around
center
best
described
as
distorted
octahedral
CoN4O2
chromophore.
crystal
structure
stabilized
intramolecular
intermolecular
hydrogen
bonds.
A
bis(salicylaldehyde
acylhydrazone)
Schiff
base
ligand
(H4L)
was
designed
and
synthesized
from
the
condensation
reaction.
Four
complexes,
formulated
as
{[Cd(H5L+)Cl3]·2CH3OH}n
(1),
{[Cd(H4L)Br2]·H2O}n
(2),
{[Cd2(H4L)2I4]·CH3OH}n
(3),
[Cu3(L4-)(Ac)2]·CH3OH·H2O
(4)
were
characterized
by
single-crystal
X-ray
diffraction.
Complex
1
exists
a
2D
sheet
structure
each
Cd(II)
ion
in
complex
is
six-coordinated
with
octahedral
geometry.
Both
complexes
2
3
exist
1D
zig-zag
structures
two
five-coordinated
trigonal
bipyramidal
4
centrosymmetric
trinuclear
structure,
which
Cu(II)
ions
are
square
pyramidal
geometry
other
The
structural
differences
attributed
to
coordination
ability
of
sites
configurations
metal
ions.
Furthermore,
alcohol
vapor
adsorption
measurements
showed
that
all
exhibited
good
capacities
toward
methanol
vapor.
