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Synthesis of Two Lead Complexes of Propellant Stabilizer Compounds: In Pursuit of Novel Propellant Additives
Author(s) -
Lundell Carl E.,
O'Sullivan Owen T.,
Gau Michael R.,
Zdilla Michael J.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701791
Subject(s) - propellant , chemistry , stabilizer (aeronautics) , lead (geology) , standard enthalpy of formation , trimethylsilyl , tetrahydrofuran , combustion , organic chemistry , aerospace engineering , geomorphology , solvent , geology , engineering
Two lead complexes, Tetrakis(μ 3 ‐(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.