Nitrogen-rich metal-free salts: a new look at the 5-(trinitromethyl)tetrazolate anion as an energetic moiety
A series of energetic nitrogen-rich salts comprised of a 5-(trinitromethyl)tetrazolate anion and high-nitrogen cations was synthesized by simple and efficient chemical routes from readily available commercial reagents. These energetic materials were fully characterized by IR and multinuclear NMR ( 1...
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Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 5; no. 39; pp. 13778 - 13785 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
12.10.2021
|
Subjects | |
Online Access | Get full text |
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Summary: | A series of energetic nitrogen-rich salts comprised of a 5-(trinitromethyl)tetrazolate anion and high-nitrogen cations was synthesized by simple and efficient chemical routes from readily available commercial reagents. These energetic materials were fully characterized by IR and multinuclear NMR (
1
H,
13
C,
14
N) spectroscopy, elemental analysis, and differential scanning calorimetry (DSC). Additionally, the structure of an energetic salt containing the 3,6,7-triamino-7
H
-[1,2,4]triazolo[4,3-
b
][1,2,4]triazolium cation was confirmed by single-crystal X-ray diffraction. The synthesized compounds exhibit decent experimental densities (1.648-1.845 g cm
−3
) and positive enthalpies of formation (up to 725.5 kJ mol
−1
) and, as a result, superior detonation performance (detonation velocities 8.2-9.2 km s
−1
and detonation pressures 28.5-37.8 GPa), which is comparable to or even exceeding those of commonly used booster explosive PETN. On the other hand, high mechanical sensitivity of several novel 5-(trinitromethyl)tetrazolate salts along with their high combined nitrogen-oxygen content (>81%) and excellent detonation performance render them environmentally friendly alternatives to lead-based primary explosives.
Promising high-nitrogen and eco-friendly energetic salts with excellent detonation performance based on a 5-(trinitromethyl)tetrazolate core were prepared. |
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Bibliography: | Electronic supplementary information (ESI) available: Experimental procedures, details of solid-state formation enthalpy calculations, the DSC curves, crystallographic data and NMR spectra. CCDC For ESI and crystallographic data in CIF or other electronic format see DOI 10.1039/d1dt02688g In memory of Prof. Dr. Nina N. Makhova. 2094116 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d1dt02688g |