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WANG YONG, SHI WENJING, REN FUDE, CAO DUANLIN, CHEN FANG. A B3LYP AND MP2(FULL) THEORETICAL INVESTIGATION INTO THE C–NO2 BOND STRENGTH UPON THE FORMATION OF HF OR Na+ COMPLEX INVOLVING THE NITRO GROUP OF NITRO-1,2,4-TRIAZOLE. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633613500430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The change of bond dissociation energy (ΔBDE) in the C–NO2 bond upon the formation of the intermolecular hydrogen-bonding or molecule-cation interaction between the nitro group of seven kinds of nitro-1,2,4-triazoles and HF or Na+ was investigated using the B3LYP and MP2(full) methods with the 6-311++G**, 6-311++G(2df, 2p) and aug-cc-pVTZ basis sets. The C–NO2 bond strength was enhanced and the charge of nitro group turned more negative in complex in comparison with those in isolated nitro-1,2,4-triazole molecule. The increment of the C–NO2 BDEs correlated well with the H-bonding interaction energy or molecule-cation interaction energy. The analysis of AIM, NBO and electron density shifts showed that the electron density shifted toward the C–NO2 bond upon complex formation, leading to the strengthened C–NO2 bond and the possibly reduced explosive sensitivity. The ΔBDE of the C–NO2 bond in the Na+ complex is far larger greater than that in the corresponding HF system. Thus, introducing cation into the structure of the nitrotriazole might be more efficacious to reduce explosive sensitivity than the formation of the intermolecular hydrogen-bonded complex.
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Affiliation(s)
- YONG WANG
- College of Chemical Engineering and Environment, North University of China, Taiyuan 030051, P. R. China
| | - WEN-JING SHI
- The Third Hospital of Shanxi Medical University, Taiyuan 030053, P. R. China
| | - FU-DE REN
- College of Chemical Engineering and Environment, North University of China, Taiyuan 030051, P. R. China
| | - DUAN-LIN CAO
- College of Chemical Engineering and Environment, North University of China, Taiyuan 030051, P. R. China
| | - FANG CHEN
- College of Chemical Engineering and Environment, North University of China, Taiyuan 030051, P. R. China
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Li BH, Shi WJ, Ren FD, Wang Y. A B3LYP and MP2(full) theoretical investigation into the strength of the C–NO2 bond upon the formation of the intermolecular hydrogen-bonding interaction between HF and the nitro group of nitrotriazole or its methyl derivatives. J Mol Model 2012; 19:511-9. [PMID: 22955424 DOI: 10.1007/s00894-012-1574-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 08/17/2012] [Indexed: 11/29/2022]
Affiliation(s)
- Bao-Hui Li
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, 276005, China
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Investigation of correlation between impact sensitivities and bond dissociation energies in some triazole energetic compounds. Struct Chem 2010. [DOI: 10.1007/s11224-010-9668-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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