An MO Theoretical Studies on Conformations of Methyl and Ethyl Chanoacetates

  • Lee, Ikchoon (Department of Chemistry, College of Science, Inha University) ;
  • Kim, Jik-Tae (Department of High Polymer, College of Engineering, Dong Guk University) ;
  • Kim, Ui-Rak (Department of Chemistry Catholic Medical College)
  • 발행 : 1974.09.01

초록

메틸 및 에틸 시아노 아세테이트의 각종 회전체에 대하여 확장 Huckel 분자 궤도법 계산을 실시하였다. 결과로 C≡N 기는 cis 배치가 안정하고 $CH_3$기는 trans 배치가 안정함을 알았다. 또 안정화 에너지의 대부분은 정전기적인 일자간의 인력에 기인되는 것임을 밝혔다.

The extended Huckel molecular orbital calculations have been carried out on rotamers of methyl and ethyl cyanoacetates. Results show that cis orientation of C≡N group is favored while for $CH_3$group trans orientation is favored. The major part of the stabilization energies can be accounted for by the electrostatic energies between the atoms involved.

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