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

Eight new energetic salts combining N-bases (amines) with picrate ions were synthesized in high yields and characterized by NMR ( 1 H and 13 C), IR spectroscopy, elemental analysis, and differential thermal analysis. Single-crystal structural studies were performed to confirm the structures, packing...

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Bibliographic Details
Published in:CrystEngComm 2020-08, Vol.22 (29), p.4842-4852
Main Authors: Mathpati, Ramling S, Dharavath, Srinivas, Kumar, Nikhil, Ghule, Vikas D, Paul, Avijit Kumar, Tittal, Ram Kumar
Format: Article
Language:English
Subjects:
Amines
Cations
Chemical analysis
Chemical synthesis
Crystal structure
Crystallography
Differential thermal analysis
Infrared analysis
Infrared spectroscopy
Mathematical analysis
NMR
Nuclear magnetic resonance
Physiochemistry
Polymorphism
Properties (attributes)
Single crystals
Surface analysis (chemical)
Thermal stability
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Summary:Eight new energetic salts combining N-bases (amines) with picrate ions were synthesized in high yields and characterized by NMR ( 1 H and 13 C), IR spectroscopy, elemental analysis, and differential thermal analysis. Single-crystal structural studies were performed to confirm the structures, packing, and various interactions in the salts. Interestingly, salts 1 and 7 exist in different polymorphic forms and the effect of solvent on polymorphism was examined ( i.e. solvatomorphism). Thermal stability and impact and friction sensitivities were also determined to understand the relationship between their structures and properties. Salt 3 with hydrazinium cations showed higher performance ( d = 1.82 g cm −3 ; T d = 255.2 °C; D = 7.95 km s −1 ; P = 28.2 GPa; IS ≥ 30 J; FS ≥ 350 N) towards energetic applications. However, salts 4 , 7 , and 8 also exhibit good performance parameters, which are marginally better as compared to TNT. The tuning of the physiochemical properties and performances was carried out with the modification of the cationic-amine molecules and the molar ratio of the reactants. Eight energetic salts combining N-bases with picrate ion were synthesized in high yields. The structures and energetic properties were regulated by the variation of N-base molecules and the concentration of the picric acid in the reaction mixture.
ISSN:1466-8033
1466-8033
DOI:10.1039/d0ce00772b