The
thermal
decomposition
of
a
number
analogues
hexanitrohexaazaisowurtzitan
(CL-20),
in
where
one
or
more
N-nitro
groups
have
been
replaced
by
another
explosophoric
unit
(diverse
N-alkylnitramine
N-
trinitroethyl),
has
studied
methods
isothermal
and
non-isothermal
kinetics.
It
was
found
that
replacing
the
group
with
even
thermally
stable
substituent
leads
to
decrease
stability
nitrated
hexaazaisowurtzitane
framework.
suggested
distorts
symmetry
strained
cage,
which
affects
strength
N-NO2
bond.
When
less
than
parent
CL-20
is
installed,
initial
stage
degradation
determined
kinetics
this
substituent.
One
objects
study,
4,10-dinitro-2,6,8,12-tetrakis(2,2,2-trinitroethyl)
-2,4,6,8,10,12-hexaazaisowurtzitane
(8),
synthesized
for
first
time;
it
fully
characterized
also
confirmed
X-ray
structural
data.
Energetic Materials Frontiers,
Год журнала:
2024,
Номер
5(1), С. 27 - 40
Опубликована: Фев. 26, 2024
The
thermal
decomposition
of
a
number
analogues
hexanitrohexaazaisowurtzitan
(CL-20),
in
where
one
or
more
N-nitro
groups
have
been
replaced
by
another
explosophoric
unit
(diverse
N-alkylnitramine
N-
trinitroethyl),
has
studied
methods
isothermal
and
non-isothermal
kinetics.
It
was
found
that
replacing
the
group
with
even
thermally
stable
substituent
leads
to
decrease
stability
nitrated
hexaazaisowurtzitane
framework.
suggested
distorts
symmetry
strained
cage,
which
affects
strength
N–NO2
bond.
When
less
than
parent
CL-20
is
installed,
initial
stage
degradation
determined
kinetics
this
substituent.
One
objects
study,
4,10-dinitro-2,6,8,12-tetrakis
(2,2,2-trinitroethyl)
−2,4,6,8,10,12-hexaazaisowurtzitane
(8),
synthesized
for
first
time;
it
fully
characterized
also
confirmed
X-ray
structural
data.
The
creation
of
novel
energetic
polymers
for
future
advanced
solid
composite
propellants
and
gunpowder
is
an
urgent
area
modern
research.
A
simple
effective
waste-free
cycloaddition
reaction
between
dialkyne
diazide
comonomers,
both
bearing
nitramine
groups,
the
synthesis
polymer
containing
explosophoric
units
in
chain
has
been
described.
Neither
solvent
nor
catalyst
required
production
this
polymer,
comonomers
used
are
readily
available,
product
does
not
need
any
purification,
and,
importantly,
protocol
scales
well.
resulting
(C1Z1,
C14H22N12O8)n,
was
comprehensively
characterized
by
spectral
physico-chemical
methods.
Compatibility
with
plasticizers
(NG,
DNDEG,
DANPE),
thermochemical
characteristics
combustion
features
indicate
prospects
target
C1Z1
(density,
ρ
=
1.484
g
cm−3;
onset
temperatures
230°C;
positive
enthalpy
formation,
ΔHf0
+636
kJ
kg−1;
burning
rate
at
10
MPa
9.5
mm
s−1)
as
a
binder
base
materials.
Comparison
nitrocellulose
(NC)
their
compositions
revealed
advantages
C1Z1.
Dalton Transactions,
Год журнала:
2024,
Номер
53(13), С. 6100 - 6111
Опубликована: Янв. 1, 2024
Novel
energetic
cyano
derivatives
of
polynitro
hexaazaisowurtzitanes
surpass
the
benchmark
CL-20
in
energy
content,
as
well
frictional
and
thermal
stability.
Royal Society Open Science,
Год журнала:
2024,
Номер
11(3)
Опубликована: Март 1, 2024
Nitrogen-/oxygen-containing
functional
groups
(N/O
groups)
may
be
found
in
a
wide
variety
of
areas
such
as
agriculture,
drug
design
and
energetic
materials.
Exploring
the
chemistry
synthesis
N/O
is
desirable
compounds
containing
their
functionality
prove
to
invaluable
fields.
A
unique
group
which
offer
additional
insight
into
high-heteroatom
content
systems
2-nitrodiazene-1-N-oxide
(NDO
group).
While
on
own,
NDOs
combine
well-known
azoxy
(N(O)=N)
nitro
(-NO2)
single
group.
Although
superior
densities
enthalpies
formations
relative
counterparts,
have
been
significantly
less
investigated
than
nitro-bearing
counterparts.
This
work
will
discuss
chemical
literature
from
initial
discovery
modern
techniques,
properties
stability.
Earthline Journal of Chemical Sciences,
Год журнала:
2024,
Номер
unknown, С. 323 - 377
Опубликована: Май 30, 2024
There
exists
an
inherent
contradiction
between
the
energy
density
and
safety
of
energetic
materials.
To
ameliorate
get
accord
safety,
cocrystallization
seems
to
be
a
remedy
which
has
been
getting
quite
popular
in
field
Energetic
cocrystals
represent
one
most
important
classes
research
advances
area
The
significantly
improves
performance
cocrystals,
such
as
density,
solubility,
sensitivity,
thermal
stability.
This
mini
review
summaries
some
CL-20
based
terms
various
aspects
them.
Journal of Heterocyclic Chemistry,
Год журнала:
2024,
Номер
61(10), С. 1602 - 1612
Опубликована: Авг. 27, 2024
ABSTRACT
This
work
presents
the
study
results
on
acid‐catalyzed
cascade
condensation
of
p
‐toluenesulfonamide
with
glyoxal
in
H
2
SO
4
order
to
synthesize
aza‐
and
oxaazaisowurtzitanes—a
platform
for
promising
high‐energy‐density
compounds—and
explore
their
formation
processes.
The
effects
ratio
starting
reactants,
acidity,
reaction
medium
concentration,
temperature
this
process
were
studied
detail.
Five
novel
compounds
derived,
including
four
oxaazaisowurtzitanes
comprising
one
three
aza
groups,
intermediate.
most
favorable
conditions
resultant
caged
established
some
new
regularities
revealed.
For
instance,
concentration
was
discovered
first
time
influence
generation
via
direct
condensation.
limiting
stage
cage
identified.
rate
shown
be
dependent
structure.
factor
dramatically
reducing
yield
at
elevated
synthesis
also
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 19, 2024
N-Nitro
derivatives
of
primary
alkyl,
aryl
and
heteroarylamines
can
be
directly
alkylated
with
functionalized
alcohols
under
Mitsunobu
conditions
at
the
N
and/or
O
atoms
nitramino
moiety
to
give
secondary
nitramines
or
1-alkoxydiazene
1-oxides,
respectively.
Molecules,
Год журнала:
2023,
Номер
28(22), С. 7648 - 7648
Опубликована: Ноя. 17, 2023
The
synthesis
of
substituted
2,4,6,8,10,12-hexaazaisowurtzitane
via
direct
condensation
is
challenging.
selection
starting
ammonia
derivatives
very
limited.
important
step
in
developing
alternative
synthetic
routes
to
these
compounds
investigate
their
formation
process
detail.
Here,
we
examined
an
acid-catalyzed
between
benzyl
carbamate
and
glyoxal
a
ratio
2:1
range
polar
protic
aprotic
solvents,
discovered
new
occurring
during
the
cascade
with
as
well
several
processes
hindering
caged
compounds.
More
specifically,
cyclic
compound,
N,N′-bis(carbobenzoxy)-3,6-diamino-1,4-dioxane-2,5-diol,
was
found
form
at
early
stage
under
low
acidity
conditions.
this
compound
governed
by
easier
alcohol
groups
compared
amide
ones.
intermediates,
N,N′-bis(carbobenzoxy)ethan-1,2-diol,
N,N′,N″-tris(carbobenzoxy)ethanol,
N,N′,N″,N‴-tetrakis(carbobenzoxy)ethan,
were
obtained
higher
acidity.
A
solvents
identified:
those
that
react
carbamate,
promote
progress
side
processes,
precipitation
intermediates.
few
byproducts
isolated
identified.
It
DMSO
exhibits
strong
deactivating
ability,
while
CH3CN
activating
ability
towards
glyoxal.
