Zharkov A.S.,Joint Stock Company Federal Research and Production Center |
Kalmykov P.I.,Joint Stock Company Federal Research and Production Center |
Burtsev Yu.N.,RAS Kurnakov Institute of General and Inorganic Chemistry |
Kuznetsova N.P.,RAS Kurnakov Institute of General and Inorganic Chemistry |
And 6 more authors.
Russian Chemical Bulletin | Year: 2014
The phase diagram of the binary furazano[3,4-e]tetrazine-4,6-dioxide (1)-2,4-dinitro-2,4-diazapentane (2) system was studied by differential thermal analysis and microcalorimetry. The branches of the liquidus lines of this system were calculated. The eutectic point coordinates and monoeutectic equilibrium lines were refined. The components of the system under study were shown to interact with each other to form two low-melting-point eutectics E 1 and E 2 and a stoichiometric (in a 1: 1 molar ratio) molecular compound, viz., crystalline complex 1·2. According to the single-crystal X-ray diffraction data, complex 1·2 belongs to the orthorhombic crystal system (space group P212121, a = 10.4264(17) Å, b = 10.8490(18) Å, c = 10.9878(19) Å, V = 1242.9(4) Å3; Z = 4). In the structure of 1·2, molecules 1 and 2 are ordered. The nitro oxygen atoms form close contacts with the nitrogen atoms of the N→O groups and the system of the tetrazine ring, as well as with the carbon atoms of bicyclic compound 1. The reversible crystallization - melting processes of complex 1·2 and the eutectic E 2 were studied by turbidimetry. The sensitivity of molecular complex 1·2 to mechanical and thermal effects and its tendency to detonation were studied in relation to compound 1. The formation of the complex was found to lead to an increase in the critical diameter of detonation from 0.04 to 0.7 mm, in the minimum drop height for the determination of the impact sensitivity from 30-70 to 150-200 mm (P = 2 kg), and in the temperature of extensive decomposition from 135 to 168 °C. © 2014 Springer Science+Business Media New York.
Ishmatov A.N.,Russian Academy of Sciences |
Elesin V.V.,Joint Stock Company Federal Research and Production Center |
Trubnikov A.A.,Russian Academy of Sciences |
Ogorodnikov S.P.,Joint Stock Company Federal Research and Production Center
Atmospheric and Oceanic Optics | Year: 2013
The problem of creating fine gas-droplet flows and aerosols with specified characteristics (size distribution, concentration, flow rate) for a wide range of scientific problems is solved. The possibility of efficient production of fine droplets with a specified size distribution is shown. © 2013, Pleiades Publishing, Ltd.