The crystal structure of hexaquamagnesium(II) bis(3,4-dinitropyrazol-1-ide), C6H14MgN8O14

Dedicated to Professor Dr. Wolfgang Beck on the occasion of his 90 th Birthday.Strontium-based red pyrotechnic colorants have fallen into disrepute due to the harmful influence of this alkaline earth metal on adolescents. In this context, the energetic character, safety, and combustion to benign nitrogen gas of nitropyrazoles are used for the design of the corresponding lithiated materials, which are investigated as potential replacements in the current work. For this purpose, the lithium salts of 3,4-dinitro-1Hpyrazole, 3,5-dinitro-1H-pyrazole, 4-amino-3,5-dinitro-1H-pyrazole, 3,4,5-trinitro-1H-pyrazole, and 4-hydroxy-3,5-dinitro-1H-pyrazole were extensively characterized by standard analytical methods, low-temperature single-crystal X-ray diffraction, studies of the thermo-chemical behavior, and sensitivity assessments. Our assumption that the high nitrogen contents and the low oxygen balances of these compounds would adjust a cool, reductive flame atmosphere essential for red emissions by lithium was put to the test.

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Lithium Nitropyrazolates as Potential Red Pyrotechnic Colorants

Klapötke

Dufter-Münster

Harter

et al. 2022

Eur J Inorg Chem

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The crystal structure of hexaquamagnesium(II) bis(3,4-dinitropyrazol-1-ide), C₆H₁₄MgN₈O₁₄

Abstract: C6H14MgN8O14, monoclinic, P1̄ (no. 2), a = 6.1154(3) Å, b = 7.9529(4) Å, c = 9.0459(5) Å, α = 77.744(2)° β = 82.589(2)°, γ = 81.134(3)°, V = 422.67(4) Å3, Z = 1, Rgt(F) = 0.0454, wRref(F2) = 0.1112, T = 150 K.

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Lithium Nitropyrazolates as Potential Red Pyrotechnic Colorants

Lithium Nitropyrazolates as Potential Red Pyrotechnic Colorants

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