The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 13, 2024
The
evolution
of
energetic
materials
science
presents
new
challenging
tasks
associated
with
the
creation
advanced
technologies
for
sustainable
development
future.
In
this
work,
a
set
heat-resistant
high-energy
incorporating
polynitrophenyl-1,2,5-oxadiazole
scaffold
enriched
azo/azoxy
moieties
have
been
designed
and
synthesized.
Due
to
smart
combination
explosophoric
groups
1,2,5-oxadiazole
rings,
prepared
substances
excellent
thermal
stability
(up
300
°C),
good
densities
1.75
g
cm–3),
high
enthalpies
formation
(340–538
kJ
mol–1),
combined
nitrogen–oxygen
content
(63–68%).
In-depth
structural
analysis
revealed
presence
strong
intra-
intermolecular
hydrogen
bonds
in
aminodinitrophenyl
derivatives,
which
small
deviation
electrostatic
potential
values
explains
low
mechanical
sensitivity
these
materials.
At
same
time,
trinitrophenyl-1,2,5-oxadiazoles
three
adjacent
non-coplanar
nitro
demonstrated
higher
impact,
albeit
retaining
complete
insensitivity
friction.
overall
performance
thus
exceeds
that
known
explosive
hexanitrostilbene.
Therefore,
newly
synthesized
family
polynitrophenyl-1,2,5-oxadiazoles
provides
fruitful
foundation
Defence Technology,
Год журнала:
2023,
Номер
35, С. 100 - 107
Опубликована: Дек. 21, 2023
Melt-cast
explosives
are
the
most
widely
used
energetic
materials
in
military
composite
explosives,
researchers
have
been
unremittingly
exploring
high-energy
and
insensitive
melt-cast
explosives.
In
this
work,
a
series
of
dinitrophenyl-oxadiazole
compounds
were
designed
prepared.
These
an
ideal
low
melting
point
(80–97
°C),
good
detonation
performance
(detonation
velocity
D
=
6455–6971
m/s,
pressure
P
18–19
GPa)
extreme
nature
(impact
sensitivity
≥60
J,
friction
>360
N).
All
these
well
characterized
by
nuclear
magnetic
resonance,
fourier
transform
infrared
spectroscopy,
elemental
analysis.
Compounds
2,
3
unambiguously
confirmed
X-ray
single
crystal
diffraction
As
result,
their
overall
properties
superior
to
traditional
trinitrotoluene
(TNT)
dinitroanisole
(DNAN)
which
may
excellent
potential
applications
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 25, 2024
Nitrogen
heterocyclic
scaffolds
retain
their
leading
position
as
valuable
building
blocks
in
material
science,
particularly
for
the
design
of
small-molecule
energetic
materials.
However,
search
more
balanced
combinations
directly
linked
cores
is
far
from
being
exhausted
and
aims
to
reach
ideally
high-energy
substances.
Herein,
we
present
synthetic
route
novel
pyrazole-furoxan
framework
enriched
with
nitro
groups
demonstrate
a
promising
set
properties,
viz.,
good
thermal
stability,
acceptable
mechanical
sensitivity,
high
detonation
performance.
In-depth
crystal
analysis
showed
that
isomers
having
lower-impact
sensitivity
values
both
types
regioisomeric
pairs
are
those
exocyclic
furoxan
oxygen
atom
closer
pyrazole
ring.
Owing
favorable
combination
densities
(1.83-1.93
g
cm
Journal of Heterocyclic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 12, 2024
ABSTRACT
The
review
is
devoted
to
synthetic
methods
for
the
preparation
of
C
‐amino
1,2,3‐triazoles
and
their
oxides
being
important
precursors
in
development
energetic
compounds
as
well
biological,
medicinal,
organic,
bio‐organic,
polymer,
material
chemistry.
This
research
mainly
covers
papers
published
after
year
1986.
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 13, 2024
The
evolution
of
energetic
materials
science
presents
new
challenging
tasks
associated
with
the
creation
advanced
technologies
for
sustainable
development
future.
In
this
work,
a
set
heat-resistant
high-energy
incorporating
polynitrophenyl-1,2,5-oxadiazole
scaffold
enriched
azo/azoxy
moieties
have
been
designed
and
synthesized.
Due
to
smart
combination
explosophoric
groups
1,2,5-oxadiazole
rings,
prepared
substances
excellent
thermal
stability
(up
300
°C),
good
densities
1.75
g
cm–3),
high
enthalpies
formation
(340–538
kJ
mol–1),
combined
nitrogen–oxygen
content
(63–68%).
In-depth
structural
analysis
revealed
presence
strong
intra-
intermolecular
hydrogen
bonds
in
aminodinitrophenyl
derivatives,
which
small
deviation
electrostatic
potential
values
explains
low
mechanical
sensitivity
these
materials.
At
same
time,
trinitrophenyl-1,2,5-oxadiazoles
three
adjacent
non-coplanar
nitro
demonstrated
higher
impact,
albeit
retaining
complete
insensitivity
friction.
overall
performance
thus
exceeds
that
known
explosive
hexanitrostilbene.
Therefore,
newly
synthesized
family
polynitrophenyl-1,2,5-oxadiazoles
provides
fruitful
foundation
