Results 281 to 290 of about 612,900 (330)

Energetic Salts of Cubane-1,4-Dimethylnitrocarbamate

Inorganic Chemistry
Several salts of cubane-1,4-dimethylnitrocarbamate (CMNC) were synthesized. The divalent CMNC is deprotonated by alkaline, alkaline earth metal, and nonmetal bases to form the corresponding salts. The compounds were characterized and analyzed by multinuclear NMR and IR spectroscopy, mass spectrometry, elemental analysis, single crystal X-ray, and ...
Andreas Bartonek, Thomas M. Klapötke, Burkhard Krumm   +2 more
openaire   +2 more sources

Design, synthesis and investigations of a series of energetic salts through the variation of amines and concentration of picrate anions

, 2020
Eight new energetic salts combining N-bases (amines) with picrate ions were synthesized in high yields and characterized by NMR (1H and 13C), IR spectroscopy, elemental analysis, and differential thermal analysis.
Ramling S. Mathpati, Srinivas Dharavath, Nikhil Kumar, V. Ghule, A. Paul, Ram Kumar Tittal   +5 more
semanticscholar   +1 more source

Conjugated Energetic Salts Based on Fused Rings: Insensitive and Highly Dense Materials.

Journal of the American Chemical Society, 2018
Nitroamino-functionalized 1,2,4-triazolo[4,3- b][1,2,4,5]tetrazine (1), when combined with intermolecular hydrogen bonds (HBs) and strong noncovalent interactions between layers, results, for example, in an interlayer distance of 2.9 Å for ...
Lu Hu, P. Yin, Gang Zhao, Chunlin He, Gregory H. Imler, D. Parrish, Haixiang Gao, J. Shreeve   +7 more
semanticscholar   +1 more source

Energetics of intrachain salt‐linkage formation in collagen

Biopolymers, 1990
AbstractThe energy of formation of salt linkages between Arg or Lys with Asp or Glu in a polypeptide chain having the collagen fold have been estimated using the fully empirical energy minimization scheme AMBER. The polypeptide was considered both in an isolated and a hydrated triple helical state.
E P, Katz, C W, David
openaire   +2 more sources

Salts of Methylated 5-Aminotetrazoles with Energetic Anions

Inorganic Chemistry, 2007
1-methyl-5-aminotetrazole (4, MAT) can easily be protonated by strong acids, yielding known but largely uninvestigated 1-methyl-5-aminotetrazolium nitrate (4a) and perchlorate (4b). Methylation, rather than protonation, of 4 with iodomethane followed by the exchange of the iodide (5a) for nitrate (5b), perchlorate (5c), azide (5d), and dinitramide (5e)
Konstantin, Karaghiosoff, Thomas M, Klapötke, Peter, Mayer, Carles Miró, Sabaté, Alexander, Penger, Jan M, Welch   +5 more
openaire   +2 more sources

Energetic, Low‐Melting Salts of Simple Heterocycles

Propellants, Explosives, Pyrotechnics, 2003
AbstractThe synthesis of three new families of heterocyclic‐based salts was undertaken and accomplished. Three triazole systems, 1H‐1,2,4‐triazole, 4‐amino‐1,2,4‐triazole, and 1H‐1,2,3‐triazole, were used as proton bases with nitric (HNO3), perchloric (HClO4), and dinitramidic (HN(NO2)2) acid systems. In all cases, stable salts were recovered and fully
Gregory Drake, Tommy Hawkins, Adam Brand, Leslie Hall, Milton Mckay, Ashwani Vij, Ismail Ismail   +6 more
openaire   +2 more sources

A facile synthesis of energetic salts based on fully nitroamino-functionalized [1,2,4]triazolo[4,3-b][1,2,4]triazole.

Dalton Transactions, 2019
A novel family of fully nitroamino-functionalized [1,2,4]triazolo[4,3-b][1,2,4]triazole-based energetic salts were synthesized. All salts were characterized by IR and multinuclear NMR spectroscopy, thermal analysis and elemental analysis.
C. Bian, Wenjing Feng, Q. Lei, Haifeng Huang, Xia Li, Jianlong Wang, Chuan Li, Zhongliang Xiao   +7 more
semanticscholar   +1 more source

Simple, Nitrogen-Rich, Energetic Salts of 5-Nitrotetrazole

Inorganic Chemistry, 2008
A new family (ammonium, 1, hydrazinium, 2, guanidinium, 3, aminoguanidinium, 4, diamino-guanidinium, 5, and triaminoguanidinium, 6) of simple, nitrogen-rich energetic salts based on 5-nitro-2 H-tetrazole (HNT) were synthesized. In addition, the hemihydrate of 1 (1a) and the hydrate of 6 (6a) were also isolated.
Thomas M, Klapötke, Peter, Mayer, Carles, Miró Sabaté, Jan M, Welch, Nikolai, Wiegand   +4 more
openaire   +2 more sources

Energetic Salts Based on Tetrazole N‐Oxide

Chemistry – A European Journal, 2016
AbstractEnergetic materials (explosives, propellants, and pyrotechnics) are used extensively for both civilian and military applications and the development of such materials, particularly in the case of energetic salts, is subject to continuous research efforts all over the world.
Piao, He, Jian-Guo, Zhang, Xin, Yin, Jin-Ting, Wu, Le, Wu, Zun-Ning, Zhou, Tong-Lai, Zhang   +6 more
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Energetic Ethylene‐ and Propylene‐Bridged Bis(nitroiminotetrazolate) Salts

Chemistry – A European Journal, 2009
AbstractHigh energy density materials with ethylene‐ and propylene bis(5‐nitroiminotetrazolate) as the anions are reported; all salts were fully characterized by IR, and 1H, 13C, and 15N NMR spectroscopy as well as elemental analyses. In addition, the heats of formation (ΔHf) and the detonation pressures (P) and velocities (D) were calculated.magnified
Young-Hyuk, Joo, Jean'ne M, Shreeve
openaire   +2 more sources