European Journal of Inorganic Chemistry,
Journal Year:
2022,
Volume and Issue:
2022(28)
Published: Aug. 8, 2022
Abstract
The
tetradentate
organotelluroether
(C
9
H
6
NTe)
2
CH
ligand
has
been
synthesized
and
its
coordination
behaviour
with
a
stoichiometric
amount
of
copper(II)
silver(I)
perchlorate
triflate
salts
experimentally
investigated.
isolated
metal
complexes
are
characterized
by
multinuclear
(
1
H,
13
C,
125
Te)
NMR
spectroscopy,
single
crystal
X‐ray
diffraction,
DFT
calculations.
analysis
revealed
the
formation
self‐assembled
bimetallic
molecular
formula
2[M(C
]
+
X
−
[M
=Cu,
Ag;
=ClO
4
,
CF
3
SO
].
Further,
it
noticed
that
ions
act
as
bridging
unit
to
form
cationic
8‐membered
metallamacrocycles
in
chair
conformation.
atoms
molecule
(AIM)
non‐covalent
interactions
(NCI)
display
weak
intramolecular
Te⋅⋅⋅Te
interaction.
Natural
bond
orbital
(NBO)
calculations
suggest
tellurium
rich
electron
donating
ability
toward
than
quinoline
nitrogen
complexes.
Acta Crystallographica Section C Structural Chemistry,
Journal Year:
2023,
Volume and Issue:
79(6), P. 204 - 216
Published: May 15, 2023
We
report
here
on
the
status
of
research
halogen
bonds
and
other
σ-hole
interactions
involving
p
-block
elements
in
Lewis
acidic
roles,
such
as
chalcogen
bonds,
pnictogen
tetrel
bonds.
A
brief
overview
available
literature
this
area
is
provided
via
a
survey
many
review
articles
that
address
field.
Our
focus
has
been
to
collect
together
most
published
since
2013
provide
an
easy
entry
into
extensive
area.
snapshot
current
by
introduction
virtual
special
issue
compiled
journal,
comprising
11
entitled
`
Halogen,
chalcogen,
bonds:
structural
chemistry
beyond
.'
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(24), P. 13952 - 13965
Published: Nov. 10, 2023
Sterically
hindered
C═C
double
bonds
often
deform
into
a
bent
or
twisted
geometry.
Thus,
many
overcrowded
ethylenes
anthraquinodimethanes
can
adopt
multiple
conformations,
such
as
folded
form
form,
which
are
interconvertible
under
the
application
of
external
stimuli.
A
perpendicular
with
biradical
character
also
be
adopted
when
designed
to
incorporate
stable
carbon-based
radical
unit,
is
involved
in
stimuli-responsive
magnetic
switching
accompanied
by
structural
change.
This
review
focuses
on
recent
advances
development
strained
π-electron
systems
and
reveals
factors
that
affect
mutual
interconversion
behavior.
The
energy
barrier
for
conformational
isomers
affected
tricyclic
skeleton
bulky
substituents
bonds,
whereas
relative
stability
increases
additional
insertion
9,10-anthrylene
units
bonds.
Bulletin of the Chemical Society of Japan,
Journal Year:
2022,
Volume and Issue:
95(3), P. 522 - 531
Published: Feb. 14, 2022
Abstract
In
the
crystals
of
4,7-dihalobenzo[c][1,2,5]chalcogenadiazoles,
molecules
are
connected
by
two
competing
secondary
bonding
interactions:
chalcogen
bond
(ChB)
and
halogen
(HaB).
Because
strengths
ChB
HaB
change
according
to
kind
(E:
S,
Se,
Te)
(X:
Cl,
Br,
I),
their
relative
contributions
in
determining
crystal
packing
can
also
change.
Six
newly
determined
structures
as
well
3
previously
reported
be
categorized
into
groups:
ChB-dominant
HaB-dominant
structures.
which
X
=
I
is
strong
enough
dictate
compounds
with
E
S
but
not
where
Te,
whereas
Cl
or
Br
has
little
effect
on
molecular
networks
crystals.
The
observed
changing
may
useful
for
designing
new
supramolecular
synthons
engineering.
Crystal Growth & Design,
Journal Year:
2023,
Volume and Issue:
24(2), P. 781 - 791
Published: Dec. 27, 2023
In
parallel
to
the
nature
of
chalcogen
atom
(Ch)
and
nucleophile
(Nu),
strength
directionality
bonding
(ChB)
are
also
dependent
on
electron
donor
or
acceptor
character
functional
group
(R)
at
∠R–Ch···Nu.
Although
Hammett's
para-substituent
constant
(σp)
can
be
used
for
quantitative
description
substituent
effects,
herein,
we
found
that
due
participation
substituents
in
various
types
intermolecular
interactions,
there
is
no
linear
relationship
between
σp
R
(X
=
−CH3,
−H,
−F,
−Cl,
−Br,
−NO2)
experimental
Se···N
distance
∠N–Se···N
angle
5-substituted
benzo[c][1,2,5]selenadiazoles
their
copper(II)
complexes.
Such
a
not
observed
theoretically,
which
rationalized
by
taking
into
consideration
formation
intramolecular
hydrogen
bonds
Cu
The
have
been
analyzed
using
quantum
theory
"atoms
molecules"
combined
with
noncovalent
interaction
plot
energy
decomposition
analysis.
ChemPhysChem,
Journal Year:
2023,
Volume and Issue:
24(9)
Published: Jan. 20, 2023
Abstract
2,1,3‐Benzochalcogenadiazoles
C
6
R
4
N
2
E
(
/
;
E=S,
Se,
Te;
R=H,
F,
Cl,
Br,
I)
and
H
R’
R=Br,
are
10π‐electron
hetarenes.
By
CV/EPR
measurements,
DFT
calculations,
QTAIM
ELI‐D
analyses,
it
is
shown
that
their
molecular
electron
affinities
(EAs)
increase
with
decreasing
Allen
electronegativities
of
the
non‐hydrogen
(except
Cl)
atoms.
calculations
for
+e⋅
−
→[E/R]⋅
capture
reveal
negative
ΔG
values
numerically
increasing
atomic
numbers
atoms;
positive
ΔS
has
a
minor
influence.
It
suggested
EA
caused
by
more
effective
charge/spin
delocalization
in
radical
anions
heavier
derivatives
due
to
contributions
from
diffuse
(a
real‐space
expanded)
p‐AOs
this
counterintuitive
effect
might
be
general
character.
Organometallics,
Journal Year:
2024,
Volume and Issue:
43(11), P. 1246 - 1255
Published: May 29, 2024
With
an
interest
in
chalcogen
bonding,
we
use
a
rigid
indazolium
backbone
to
install
formally
zero-valent
Se
center
next
divalent
Te
center,
allowing
us
investigate
the
effects
of
oxidation
on
observed
Te···Se
interaction.
Through
spectroscopic
and
computational
comparison
Se(0)
species
with
its
Se(II)
counterpart
their
monochalcogen
analogues,
experimentally
computationally
effect
modulating
basicity
resulting
Comparison
well-studied
naphthalene
acenaphthene
variants
indicates
that
increased
allows
for
comparably
strong
interaction
despite
longer
peri
distances
larger
splay
angle.
Finally,
our
study
illuminates
potential
non-innocence
cationic
organic
substituents
chalcogen-bonding
catalysis
transfer
hydrogenation
quinolines.
