Synthesis of Two Lead Complexes of Propellant Stabilizer Compounds: In Pursuit of Novel Propellant Additives

Abstract

Two lead complexes, Tetrakis(μ3‐(4‐methyl‐3‐nitrophenyl imido lead (II))) 1, and Bis(2‐nitrodiphenyl amido lead(II)) 2, were prepared by protolysis of bis(bis(trimethylsilyl)amido)lead(II) with two compounds relevant to double‐base propellant stabilizers: 2‐nitrodiphenylamine (NDPA) and 4‐methyl‐3‐nitroaniline. Crystal structures were determined as tetrahydrofuran solvates, and exhibit a number of unusual geometric features, including low lead coordination number. Heats of combustion and formation were determined using bomb calorimetry and converted to energy density using crystallographic densities. Compound 1 has an energy density of 30 MJ/L, whereas 2 was 38.2 MJ/L.

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