Premium
Preparation, Crystal Structure, and Thermal Decomposition of the Energetic Compound [Co(IMI) 4 (PA)](PA) (IMI = Imidazole and PA = Picrate)
Author(s) -
Wu BiDong,
Zhang TongLai,
Yang Li,
Zhang JianGuo,
Zhou ZunNing
Publication year - 2013
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201200295
Subject(s) - picrate , triclinic crystal system , thermogravimetry , thermal decomposition , chemistry , imidazole , crystal structure , differential scanning calorimetry , crystallography , single crystal , stereochemistry , inorganic chemistry , organic chemistry , ion , physics , thermodynamics
The novel multi‐ligand coordination compound [Co(IMI) 4 (PA)](PA) ( 1 ) was synthesized by using imidazole (IMI) and picrate (PA) and characterized by elemental analysis and FT‐IR spectroscopy. The crystal structure was determined by X‐ray single crystal diffraction and the crystallographic data showed that the compound crystallizes in the triclinic space group P $\bar{1}$ ( α = 8.839(2) Å, b = 13.550(3) Å, c = 13.840(3) Å, α = 68.386(6)°, β = 88.349(9)°, and γ = 87.494(9)°). Furthermore, the Co II ion is six‐coordinated by four nitrogen atoms from four imidazole ligands and two oxygen atoms from a PA group. Its thermal decomposition mechanism was determined based on differential scanning calorimetry (DSC) and thermogravimetry‐derivative thermogravimetry (TG‐DTG) analysis. The kinetic parameters of the first exothermic process were studied by using Kissinger's and Ozawa's method, respectively. The energy of combustion and the enthalpy of formation were measured and calculated. They showed good combustion performance of the compound. Additionally, the sensitivity properties were determined with standard methods. The results of all these studies showed that [Co(IMI) 4 (PA)](PA) has potential application as ignition composition.