Protonation of cubane in the gas phase:: A high-level ab initio and DFT study

被引:13
作者
Abboud, JLM
Koppel, IA
Dávalos, JZ
Burk, P
Koppel, I
Quintanilla, E
机构
[1] CSIC, Inst Quim Fis Rocasolano, Madrid 28006, Spain
[2] Univ Tartu, Inst Phys Chem, EE-51014 Tartu, Estonia
关键词
D O I
10.1002/anie.200390269
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The tetracyclo[4.2.0.02,4.03,8] oct-7-ylium cation is the protonation product of cubane (1) in the gas phase according to ab initio and DFT calculations. At the G2(MP2) level, the calculated gas-phase basicity of 1 is about 60 kcalmol-1 larger than that determined experimentally. The experimental thermodynamics are consistent with fast deprotonation of 2 to give cuneane (3).
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页码:1044 / +
页数:4
相关论文
共 21 条
[1]   Intrinsic (gas phase) thermodynamic stability of 2-adamantylcation.: Its bearing on the solvolysis rates of 2-adamantyl derivatives [J].
Abboud, JLM ;
Castaño, O ;
Dávalos, JZ ;
Jinénez, P ;
Gomperts, R ;
Müller, P ;
Roux, MV .
JOURNAL OF ORGANIC CHEMISTRY, 2002, 67 (04) :1057-1060
[2]   The standard enthalpies of formation of 1-and 2-Adamantyl cations and radicals.: An ab initio study [J].
Abboud, JLM ;
Castaño, O ;
Dávalos, JZ ;
Gomperts, R .
CHEMICAL PHYSICS LETTERS, 2001, 337 (4-6) :327-330
[3]   DENSITY-FUNCTIONAL THERMOCHEMISTRY .3. THE ROLE OF EXACT EXCHANGE [J].
BECKE, AD .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (07) :5648-5652
[4]  
CASSAR L, 1970, J AM CHEM SOC, V92, P6366
[5]   GAUSSIAN-2 THEORY USING REDUCED MOLLER-PLESSET ORDERS [J].
CURTISS, LA ;
RAGHAVACHARI, K ;
POPLE, JA .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (02) :1293-1298
[6]   CUBANE SYSTEM [J].
EATON, PE ;
COLE, TW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1964, 86 (05) :962-&
[7]   CUBANES - STARTING MATERIALS FOR THE CHEMISTRY OF THE 1990S AND THE NEW CENTURY [J].
EATON, PE .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1992, 31 (11) :1421-1436
[8]  
Eaton PE., 1992, ANGEW CHEM, V104, P1447
[9]  
Foresman J.B., 1996, EXPLORING CHEM ELECT
[10]  
Hehre W. J., 1986, Ab initio molecular orbital theory