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Article
Synthesis and Structure of 2-Nitroxyethylsuccinylaminodiethylmalonate
Interaction of hydroxymethylnitrodiethylmalonate with ammonia produced, in contrast to published data, the ammonium salt of nitrodiethylmalonate; catalytic reduction of this compound with hydrogen followed by ...
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Article
Synthesis, structure, and biological activity of the cis-[4-amino-2,2,6,6-tetramethylpiperidine-N,N′]dichloropalladium(ii) complex
A previously unknown palladium complex was synthesized by the reaction of 4-amino-2,2,6,6-tetramethylpiperidine with PdCl2. The X-ray diffraction study showed that the complex formed by 4-amino-2,2,6,6-tetramethy...
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Article
A new crystalline HMX polymorph: ɛ-HMX
A new crystalline HMX polymorph, ɛ-HMX, was obtained. ɛ-HMX crystals were studied by X-ray structure analysis, optical microscopy, and differential scanning calorimetry. Their space group is P21/c. The unit cell ...
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Article
3-Ethoxy-2,2-bis(methoxy-NNO-azoxy)propan-1-ol. Synthesis and X-ray diffraction analysis
Reaction of bis(methoxy-NNO-azoxy)methane with formaldehyde in ethanol gives 3-ethoxy-2,2-bis(methoxy-NNO-azoxy)propan-1-ol as a minor product along with target 2,2-bis(methoxy-NNO-azoxy)ethanol. The structure of...
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Article
5,5-Bis(alkoxy-NNO-azoxy)-1,3,2-dioxathiane 2-oxides. Synthesis and X-ray diffraction study
2,2-Bis(alkoxy-NNO-azoxy)propane-1,3-diols reacted with thionyl chloride to give previously unknown 5,5-bis(methoxy-NNO-azoxy)- and 5,5-bis(ethoxy-NNO-azoxy)-1,3,2-dioxathiane 2-oxides. Replacement of the hydroxy...
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Article
Kinetics and mechanism of the thermal decomposition of keto-RDX
The thermal decomposition of keto-RDX occurs through the homolysis of the N-NO2 bond in one of the nitramide groups. This bond is substantially longer (1.438 Å) than the analogous bond in the RDX molecule (1.382 ...
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Article
Thermodynamic stability of 2,4,6-tris(nitromethyl)-1,3,5-triazine: an experimental and theoretical study
The molecular geometries and electronic structures of 2,4,6-tris(nitromethyl)-1,3,5-triazine isomers were investigated by the density functional method DFT/B3LYP/6-311++G** to elucidate the structural factors ...
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Article
Polymorphic transformations of hexanitrohexaazaisowurtzitane
Conditions of recrystallization of hexanitrohexaazawurtcitane from one polymorphic state into another were examined. Techniques for preparations of various polymorphic modifications of product were developed.
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Article
Phase transformations of 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane: the role played by water, dislocations, and density
A comparative study of the kinetics and mechanisms of the α → γ and ɛ → γ polymorphic transitions in polycrystalline haxanitrohexaazaisowurtzitane was performed using electron and optical microscopy, calorimet...
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Article
The energy parameters of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane polymorphs and their phase transitions
The calculated dispersion and electrostatic intermolecular interaction energies in crystals of γ, α(H2O), and ɛ polymorphs of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazawurtzitane (HNIW) were compared. Prelimin...
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Article
The kinetics of the polymorphic transition of the α-form of 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane
The α → γ polymorphic transition in hexanitrohexaazaisowurtzitane was studied by optical microscopy, calorimetry, IR spectroscopy, thermogravimetry, and X-ray diffraction. The thermal effect of the transition ...
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Article
Control over phase transformations in the crystal lattice of ammonium nitrate by modification of the system of intermolecular interactions via addition of organic substances
Methods for phase stabilization of ammonium nitrate were sought for to substantially extend the application fields of this oxidizing agent in self-combustible formulations for various purposes, including the n...
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Article
Several aspects of intermolecular interactions between the carbonyl and imine groups in the crystals of compounds containing six-membered heterocycles
Three modifier compounds that stabilize the phase state of ammonium nitrate over a wide range of temperatures, 1,3,5-trihydroxyisocyanuric acid dihydrate (1), 4-aminouracil (2), and 4-aminouracil monohydrate (3) ...
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Article
1,1-Bis(methoxy-NNO-azoxy)ethene. Synthesis and X-ray diffraction analysis
A reaction of 2,2-bis(methoxy-NNO-azoxy)ethyl methanesulfonate with ethyl(diisopropyl)amine afforded 1,1-bis(methoxy-NNO-azoxy)ethene (3). Compound 3 was examined by X-ray diffraction analysis.
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Article
Phase state stabilization of ammonium nitrate for creating an oxidizing agent for smokeless gas-generating formulations yielding no toxic combustion products
Methods for phase stabilization of ammonium nitrate were sought for in order to considerably expand the application area of this oxidizing agent in various-purpose self-combustible formulations, including that...
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Article
The structure of 2,4,6-tris[di(tert-butoxycarbonyl)methylidene]-hexahydro-1,3,5-triazine
The structure of 2,4,6-tris[di(tert-butoxycarbonyl)methylidene]hexahydro-1,3,5-triazine was studied by quantum chemistry, NMR and IR spectroscopy, and X-ray diffraction. This compound exists exclusively in the he...
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Article
Kinetics and mechanism of a polymorphous transition in polycrystalline ε-hexanitrohexaazaisowurtzitane
Optical and electron microscopy, calorimetry, IR spectroscopy, and XRD analysis were used to study the ε → γ polymorphous transition in polycrystalline hexanitrohexaazaisowurtzitane. The kinetics of the proces...
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Article
Synthesis, Structure and Solid-Phase Transformations of Fe Nitrosyl Complex Na2[Fe2(S2O3)2(NO)4] · 4H2O
Binuclear iron nitrosyl complex Na2[Fe2(S2O3)2(NO)4] · 4H2O (I) was synthesized by the reaction of iron(II) sulfate with sodium thiosulfate in the flow of NO gas. According to X-ray diffraction data, the [Fe2(S2O
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Article
Synthesis and structure of 2,3,6,8,10,13,14-heptaaza-6,8,10-trinitro-4,12-dioxapentadeca-2,13-diene 2,14-bisoxide
Alkylation of potassium salt of methylnitrosohydroxylamine with 1,7-dichloro-2,4,6-triaza-2,4,6-trinitroheptane afforded 2,3,6,8,10,13,14-heptaaza-6,8,10-trinitro-4,12-dioxapentadeca-2,13-diene 2,14-dioxide. T...
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Article
Synthesis and Crystal Structure of 2,3-Bis(dinitrofluoromethyl)-1,4-dioxane
For the first time the dinitromethyl group was modified to dinitrofluoromethyl group in the series of aliphatic polynitro compounds in the case of the reaction of 1,1,4,4-tetranitro-2,3-butanediol diacetate wi...
