Syntheses, characterization and energetic properties of closo-(B12H12)2− salts of alkylmethylimidazolium derivatives

EasyChair Preprint no. 1987

Abstract

The diimidazolium derivative of acetylene and it's salt 3,3’-(but-2-yne-1,4-diyl)bis(1-methyl-1H-imidazol-3-ium)chloride (1) was synthesized by a solvent-free sonochemical method and then the counter chloride ions were replaced by closo-dodecaborate [(B12H12)2−] (3) and perchlorate (ClO4−) (2) anions respectively. Along with these two ionic salts, a series of salts with closo-dodecaborate and alkyl imidazolium cations (4-8) were also synthesized. All the compounds were characterized by multinuclear NMR and MASS spectral data, elemental analyses and thermogravimetric analyses. In addition to that enthalpy of combustion(ΔcH°m), enthalpy of formation(ΔfH°m) and heat of explosion(Q) of all the compounds were experimentally determined. In addition to that impact (Is) and friction sensitivity (Fs) of all the compounds were experimentally determined shown that these compounds were insensitive towards impact and friction. Hence these compounds, have potential insensitive energetic materials in various fields in propellant research and technology such as solid rocket propellants and burn rate accelerators.

Keyphrases: burn rate accelerators, Dodecaborate salts, Solid rocket propellant fuels

@Booklet{EasyChair:1987,
  author = {Muddamarri Hanumantha Rao and Krishnamurthi Muralidharan},
  title = {Syntheses, characterization and energetic properties of closo-(B12H12)2− salts of alkylmethylimidazolium derivatives},
  howpublished = {EasyChair Preprint no. 1987},

  year = {EasyChair, 2019}}