Acta Chimica Sinica ›› 1997, Vol. 55 ›› Issue (8): 742-746. Previous Articles     Next Articles

Original Articles

溴代类卡宾H2CMBr(M=Na,K)的结构与稳定性

邱化玉;邓从豪   

  1. 山东大学理论化学研究室
  • 发布日期:1997-08-15

Structures and stabilities of brocarbenoids H2CMBr(M=Na,K)

QIU HUA YU;DENG CONGHAO   

  • Published:1997-08-15

Main characters of the potential energy surface of brocarbenoids H2CMBr(M=Na,K) have been studied by RHF/3-21G^* gradient method. Three equilibrium structures and two isomerization transition states are located. The electron correlation energies have been calculated at the second-order (MP2) perturbation theory and harmonic vibrational frequencies have also been executed. Energies of the equilibrium states are in the order of 1 (three-membered ring form)<3(p-complex)<2(σ-complex). 1 is predicted to be the form in which H2C MBr exists and takes part in reactions. The Mulliken populations and zero-point energies are also given.

Key words: STABILITY, CARBENE, AB INITIO CALCULATION, STRUCTURE, GEOMETRICAL ISOMERISM

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