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Zhang, H; Zheng, GL; Lv, G; Geng, YZ; Ji, Q; Ji, Q (reprint author), Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China.
Covalent intermolecular interaction of the nitric oxide dimer (NO)(2)
Source PublicationCHINESE PHYSICS B
Language英语
KeywordNitric Oxide Dimer Intermolecular Interaction Natural Orbital Covalent Bond
AbstractCovalent bonds arise from the overlap of the electronic clouds in the internucleus region, which is a pure quantum effect and cannot be obtained in any classical way. If the intermolecular interaction is of covalent character, the result from direct applications of classical simulation methods to the molecular system would be questionable. Here, we analyze the special intermolecular interaction between two NO molecules based on quantum chemical calculation. This weak intermolecular interaction, which is of covalent character, is responsible for the formation of the NO dimer, (NO)(2), in its most stable conformation, a cis conformation. The natural bond orbital (NBO) analysis gives an intuitive illustration of the formation of the dimer bonding and antibonding orbitals concomitant with the breaking of the pi bonds with bond order 0.5 of the monomers. The dimer bonding is counteracted by partially filling the antibonding dimer orbital and the repulsion between those fully or nearly fully occupied nonbonding dimer orbitals that make the dimer binding rather weak. The direct molecular mechanics (MM) calculation with the UFF force fields predicts a trans conformation as the most stable state, which contradicts the result of quantum mechanics (QM). The lesson from the investigation of this special system is that for the case where intermolecular interaction is of covalent character, a specific modification of the force fields of the molecular simulation method is necessary.
2015
Volume24Issue:9Pages:93101
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1088/1674-1056/24/9/093101
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [90403007, 10975044, 11147103] ; National Natural Science Foundation of China [90403007, 10975044, 11147103] ; National Natural Science Foundation of China [90403007, 10975044, 11147103] ; National Natural Science Foundation of China [90403007, 10975044, 11147103] ; Key Subject Construction Project of Hebei Provincial Universities, China ; Key Subject Construction Project of Hebei Provincial Universities, China ; Key Subject Construction Project of Hebei Provincial Universities, China ; Key Subject Construction Project of Hebei Provincial Universities, China ; Research Project of Hebei Education Department, China [Z2012067, Z2011133] ; Research Project of Hebei Education Department, China [Z2012067, Z2011133] ; Research Project of Hebei Education Department, China [Z2012067, Z2011133] ; Research Project of Hebei Education Department, China [Z2012067, Z2011133] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF211CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF211CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF211CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF211CJ1]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20877
Collection理论物理所科研产出_SCI论文
Corresponding AuthorJi, Q (reprint author), Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, H,Zheng, GL,Lv, G,et al. Covalent intermolecular interaction of the nitric oxide dimer (NO)(2)[J]. CHINESE PHYSICS B,2015,24(9):93101.
APA Zhang, H,Zheng, GL,Lv, G,Geng, YZ,Ji, Q,&Ji, Q .(2015).Covalent intermolecular interaction of the nitric oxide dimer (NO)(2).CHINESE PHYSICS B,24(9),93101.
MLA Zhang, H,et al."Covalent intermolecular interaction of the nitric oxide dimer (NO)(2)".CHINESE PHYSICS B 24.9(2015):93101.
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