A B3LYP and MP2(full) theoretical investigation into the cooperativity effect between dihydrogen-bonding and H-Ma™a™a™π (M = Li, Na, K) interactions among HF, MH with the π-electron donor C2H2, C2H4 or C6H6
被引:4
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作者:
Guo, Jian-feng
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North Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R ChinaNorth Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R China
Guo, Jian-feng
[1
]
Shi, Wen-jing
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机构:
Shanxi Med Univ, Hosp 3, Taiyuan 030053, Peoples R ChinaNorth Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R China
Shi, Wen-jing
[2
]
Ren, Fu-de
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North Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R ChinaNorth Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R China
Ren, Fu-de
[1
]
Cao, Duan-lin
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North Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R ChinaNorth Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R China
Cao, Duan-lin
[1
]
Zhang, Yuan-sheng
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Shanxi Med Univ, Hosp 3, Taiyuan 030053, Peoples R ChinaNorth Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R China
Zhang, Yuan-sheng
[2
]
机构:
[1] North Univ China, Coll Chem Engn & Environm, Taiyuan 030051, Peoples R China
[2] Shanxi Med Univ, Hosp 3, Taiyuan 030053, Peoples R China
Cooperativity effect;
Dihydrogen bond;
H-M center dot center dot center dot pi interaction;
MP2(full);
CATION-PI;
AB-INITIO;
ANION-PI;
HYDROGEN;
COMPLEXES;
MP2;
ACTIVATION;
INTERPLAY;
CLUSTERS;
CENTERS;
D O I:
10.1007/s00894-013-1840-x
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The DFT-B3LYP/6-311++G(3df,2p) and MP2(full)/6-311++G(3df,2p) calculations were carried out on the binary complex formed by HM (M = Li, Na, K) and HF or the pi-electron donor (C2H2, C2H4, C6H6), as well as the ternary system FHa (TM) a (TM) a (TM) HMa (TM) a (TM) a (TM) C2H2/C2H4/C6H6. The cooperativity effect between the dihydrogen-bonding and H-Ma (TM) a (TM) a (TM)pi interactions was investigated. The result shows that the equilibrium distances R (Ha (TM) a (TM) a (TM) H) and R (Ma (TM) a (TM) a (TM)pi) in the ternary complex decrease and both the Ha (TM) a (TM) a (TM) H and H-Ma (TM) a (TM) a (TM)pi interactions are strengthened when compared to the corresponding binary complex. The cooperativity effect of the dihydrogen bond on the H-Ma (TM) a (TM) a (TM)pi interaction is more pronounced than that of the Ma (TM) a (TM) a (TM)pi bond on the Ha (TM) a (TM) a (TM) H interaction. Furthermore, the values of cooperativity effect follow the order of FHa (TM) a (TM) a (TM) HNaa (TM) a (TM) a (TM)pi > FHa (TM) a (TM) a (TM) HLia (TM) a (TM) a (TM)pi > FHa (TM) a (TM) a (TM) HKa (TM) a (TM) a (TM)pi and FHa (TM) a (TM) a (TM) HMa (TM) a (TM) a (TM) C6H6 > FHa (TM) a (TM) a (TM) HMa (TM) a (TM) a (TM) C2H4 > FHa (TM) a (TM) a (TM) HMa (TM) a (TM) a (TM) C2H2. The nature of the cooperativity effect was revealed by the analyses of the charge of the hydrogen atoms in Ha (TM) a (TM) a (TM) H moiety, atom in molecule (AIM) and electron density shifts methods.