Crystal Growth & Design,
Год журнала:
2023,
Номер
23(11), С. 7922 - 7938
Опубликована: Окт. 3, 2023
Chalcogen
bonds,
which
involve
the
interaction
of
an
electrophilic
region
associated
with
a
chalcogen
atom
and
nucleophilic
in
adjacent
atom,
have
emerged
as
new
frontier
supramolecular
chemistry.
In
this
study,
formation
tellurium
(Te)-containing
bonds
along
weak
hydrogen-bonds
has
been
demonstrated,
via
investigation
crystal
structures,
obtained
from
Cambridge
Structural
Database
(CSD).
A
statistical
analysis
occurrence
short
directional
tellurium-centered
contacts
organic
molecules,
namely,
Te···Te,
Te···C,
Te···H–C,
performed.
This
was
followed
by
molecular
electrostatic
potentials,
Hirshfeld
surface
analysis,
three-dimensional
deformation
densities,
energetics
existence
different
interactions
tellurium-containing
having
diverse
array
functional
groups.
Our
findings
indicate
that
Te
functions
σ-hole
bond
donor,
engaging
π-rich
system
acceptor.
is
important
feature
governs
packing
molecules
crystalline
state,
addition
to
presence
other
contacts.
Thus,
current
study
attempt
consider
potential
Te-containing
compounds,
showing
simultaneous
"donor"
"acceptor"
characteristics,
design
materials.
Acta Crystallographica Section C Structural Chemistry,
Год журнала:
2023,
Номер
79(6), С. 204 - 216
Опубликована: Май 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,
Год журнала:
2023,
Номер
123(24), С. 13952 - 13965
Опубликована: Ноя. 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,
Год журнала:
2022,
Номер
95(3), С. 522 - 531
Опубликована: Фев. 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,
Год журнала:
2023,
Номер
24(2), С. 781 - 791
Опубликована: Дек. 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.
Organometallics,
Год журнала:
2024,
Номер
43(11), С. 1246 - 1255
Опубликована: Май 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.
