title: Theoretical investigations of a high density cage compound 10-(1-nitro-1, 2, 3, 4-tetraazol-5-yl)) methyl-2, 4, 6, 8, 12-hexanitrohexaazaisowurtzitane.
abstract: A new polynitro cage compound with the framework of HNIW and a tetrazole unit, i.e., 10-(1-nitro-1, 2, 3, 4-tetraazol-5-yl)) methyl-2, 4, 6, 8, 12-hexanitrohexaazaisowurtzitane (NTz-HNIW) has been proposed and studied by density functional theory (DFT) and molecular mechanics methods. Properties such as IR spectrum, heat of formation, thermodynamic properties, and crystal structure were predicted. The compound belongs to the Pbca space group, with the lattice parameters a = 15.07 Å, b = 12.56 Å, c = 18.34 Å, Z = 8, and ρ = 1.990 g·cm(-3). The stability of the compound was evaluated by the bond dissociation energies and results showed that the first step of pyrolysis is the rupture of the N-NO(2) bond in the side chain. The detonation properties were estimated by the Kamlet-Jacobs equations based on the calculated crystal density and heat of formation, and the results were 9.240 km·s(-1) for detonation velocity and 40.136 GPa for detonation pressure. The designed compound has high thermal stability and good detonation properties and is probably a promising high energy density compound (HEDC).
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China. nanjinger@163.com
authors.forename: Jian-ying
authors.initials: JY
authors.lastname: Zhang
authors.forename: Hong-chen
authors.initials: HC
authors.lastname: Du
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Xue-dong
authors.initials: XD
authors.lastname: Gong
authors.forename: Yin-sheng
authors.initials: YS
authors.lastname: Huang
mesh_terms: D001952:Bridged-Ring Compounds / Q000737:chemistry*; D003198:Computer Simulation; D008956:Models, Chemical; D008958:Models, Molecular; D015394:Molecular Structure; D009574:Nitro Compounds / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D001952:Bridged-Ring Compounds; D009574:Nitro Compounds; C083639:hexanitrohexaazaisowurzitane