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New Energetic Complex of Copper(II) Dinitramide Based Nitrogen‐rich Ligand Aminoguanidine(CH 6 N 4 ): Synthesis, Structural and Energetic Properties
Author(s) -
Nosratzadegan Keyvan,
Mahdavi Mohammad,
Ghani Kamal,
Barati Kazem
Publication year - 2019
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201800348
Subject(s) - chemistry , copper , crystallography , crystal structure , differential scanning calorimetry , molecule , imine , thermal decomposition , single crystal , hydrogen bond , infrared spectroscopy , ligand (biochemistry) , intermolecular force , organic chemistry , biochemistry , physics , receptor , thermodynamics , catalysis
The crystal structure of the energetic complex bis(aminoguanidine)copper(II) dinitramide [Cu(AG) 2 ][DN] 2 ( I ), has been determined at 298 K using single‐crystal X‐ray diffraction technique. The Cu(II) atom is four‐coordinated by two imine N atoms and two amine N atoms from two aminoguanidine ligands, forming a slightly distorted square‐planar coordination. In the crystal structure, molecules are linked through intermolecular N−H…O hydrogen bonds, forming a network. The infrared spectrum showed a sharp peaks at 1650 and 1010 cm −1 which are typical of the conjugated C=N stretching due to the coordination of the imine nitrogen and NNN stretching dinitramide counterion, respectively. The thermal decomposition process of this complex was investigated through differential scanning calorimetry (DSC) and the sensitivities toward impact and friction were assessed using a BAM drophammer and a BAM friction tester. In the measurement of I a violent explosion appeared destroying the setup. This may be a reason, due to the copper complex ( I ), which crystallizes water free. The power of powder and single crystal of I was measured by the Trauzl test are 425 and 427 cm −3 for 10 g I (142 % TNT and 88 % RDX).