Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(40)
Published: July 5, 2024
Abstract
In
this
work,
a
noncoplanar
terphenyl
served
as
building
block
to
synthesize
novel
3,3′‐substituted
bipyridyl
ligand
(
L1
)
which
further
reacted
with
binuclear
half‐sandwich
units
A/B
,
giving
rise
two
aesthetic
4
1
metalla‐knots
in
high
yields
via
coordination‐driven
self‐assembly
strategy.
Furthermore,
given
the
inherent
compactness
of
metalla‐knots,
it
creates
favorable
conditions
for
emergence
steric
repulsion.
We
focused
on
progressively
introducing
nitrogen
atoms
featuring
lone
pair
electrons
(LPEs)
into
manipulate
balance
H⋅⋅⋅H/LPEs⋅⋅⋅LPEs
repulsion
during
assembly
process,
ultimately
achieving
controlled
from
pseudo
‐Solomon
link
and
then
molecular
tweezer‐like
facilitated
by
stacking
interactions.
All
assemblies
were
well
characterized
solution‐state
NMR
techniques,
ESI‐TOF/MS,
single‐crystal
X‐ray
diffraction.
The
evolutionary
process
topological
architectures
is
equivalent
visualizing
synergistic
effect
hindrance
interactions
structural
assembly,
providing
new
avenue
synthesis
different
topologies.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(26), P. 3469 - 3483
Published: Jan. 1, 2024
In
this
highlight,
we
summarize
the
design
principle
and
representative
examples
of
MOCs
for
gas
adsorption
separation,
with
aim
providing
a
theoretical
basis
designing
more
that
can
adsorb
purify
gas.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(23)
Published: April 3, 2024
Abstract
Controlling
supramolecular
systems
between
different
functional
forms
by
utilizing
acids/bases
as
stimuli
is
a
formidable
challenge,
especially
where
labile
coordination
bonds
are
involved.
A
pair
of
acid/base
responsive,
interconvertible
1,5‐enedione/pyrylium
based
Pd
2
L
4
‐type
cages
prepared
that
exhibit
differential
guest
binding
abilities
towards
disulfonates
varied
sizes.
three‐state
switch
has
been
achieved,
(i)
weakly
coordinating
base
induced
cage‐to‐cage
transformation
in
the
first
step,
(ii)
strongly
triggered
cage
disassembly
second
and
(iii)
third
step
shows
acid(strong)
promoted
generation
initial
cage,
thereby
completing
cycle.
To
our
surprise,
specific
disulfonate
facilitated
transformations
inducing
strain
on
assembly
opening
pyrylium
rings
cage.
Through
competitive
study,
we
demonstrated
superior
capability
octacationic
pyrylium‐based
over
similar‐sized
tetracationic
These
results
provide
reliable
approach
to
reversibly
modulate
properties
acid/base‐responsive
self‐assembled
cages.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 20, 2024
In
this
work,
a
noncoplanar
terphenyl
served
as
building
block
to
synthesize
novel
3,3'-substituted
bipyridyl
ligand
(L1)
which
further
reacted
with
binuclear
half-sandwich
units
A/B,
giving
rise
two
aesthetic
4
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(47), P. 32748 - 32756
Published: Nov. 17, 2024
A
family
of
Pd2L4
cages
prepared
from
ligands
based
on
an
axially
chiral
diamino-[1,1′-biazulene]
motif
(serving
as
a
unique
azulene-based
surrogate
the
ubiquitous
BINOL
moiety)
is
reported.
We
show
that
preparing
cage
starting
racemate
shorter
bis-monodentate
ligand
derivative,
equipped
with
pyridine
donor
groups,
leads
to
integrative
("social")
self-sorting,
exclusively
yielding
meso-trans
product,
but
only
in
selection
solvents.
This
phenomenon
driven
by
individual
solvent
molecules
acting
hydrogen
bonding
tethers
between
amino
groups
neighboring
ligands,
thereby
locking
final
coordination
single
isomeric
form.
The
experimental
(solvent-dependent
NMR,
single-crystal
X-ray
diffraction)
observations
this
cooperative
interaction
could
be
explained
computational
analyses
when
explicit
solvation
was
considered.
Furthermore,
we
larger
isoquinoline
donors,
which,
unlike
first
one,
does
not
undergo
social
self-sorting
its
racemic
mixture,
further
highlighting
importance
solvents
bridging
short
distances
groups.
Homochiral
formed
ligand,
however,
furnish
cavity
can
bind
anionic
and
neutral
metal
complexes
such
[Pt(CN)6]2–
Cr(CO)6
discriminate
two
enantiomers
guest
camphor
sulfonate.
