$^{13}C$nmr Studies on the Interaction of Lithium Salts to Formamide, Acetamide and Propionamide Systems

Formamide, Acetamide 및 Propionamide계에 대한 리튬염의 상호작용에 관한 $^{13}C$ nmr 연구

  • Dae-Ho Shin (Department of Chemistry, Korea University) ;
  • Jo W. Lee (Department of Chemistry, College of Natural Sciences, Seoul National University) ;
  • Young Sang Choi (Department of Chemistry, Korea University)
  • 신대호 (고려대학교 이과대학 화학과) ;
  • 이조웅 (서울대학교 자연과학대학 화학과) ;
  • 최영상 (고려대학교 이과대학 화학과)
  • Published : 1982.10.30

Abstract

$^{13}C$resonances of carbonyl and various alkyl groups in amides are found to shift down-field on the interaction with lithium salts and it is shown that lithium ion binds directly to the carbonyl group in amides. The magnitudes of the $^{13}C$ chemical shifts of various amides depend not only on the size of alkyl groups in amides but also on the interaction with anion. The change of $^{13}C$chemical shift of amide in LiCl is smaller than that in$LiClO_4$ due to the difference of the charge density of the anion.

Li염이 아미드와 상호작용할 때 카르보닐기와 알킬기의 $^{13}C$chemical shift는 낮은 양쪽으로 이동하였으며, $Li^+$이온이 카르보닐기에 직접 결합함을 보였다. $^{13}C$ chemical shift의 크기는 아미드에 붙어있는 알킬기의 크기뿐만 아니라 음이온과의 상호작용에 의해서 지배됨을 알았다. 전하밀도가 큰 $Cl^-$이온이 $LiClO_4^-$이온보다 큰 음이온 효과를 나타냄을 보인다.

Keywords

References

  1. Biologial Macromolecules v.II P. H. von Hippel;T. Schleich;S. N. Timasheff(ed.);C. D. Fasman(ed.)
  2. Bioinorganic Chemistry H. Freeman;G. L. Eichorn(ed.)
  3. Membrane-Active Complexones Yu. A. Ovchinnikov;V. T. Ivanov;A. M. Shkrob
  4. Metal Ligand Interactions in Organic Chemistry and Biochemistry C. N. R. Rao;B. pullman(ed.);N. Goldblum(ed.)
  5. Metal Ligand Interactions in Organic Chemistry and Biochemistry D. Balasubramanian;B. C. Misra;B. Pullman(ed.);N. Goldblum(ed.)
  6. The Jerusalem Symposia on Quantum Chemistry and Biochemistry Metal Ligand Interactions in Organic and Biochemistry B. M. Rode
  7. J. Chem. Soc. Chem., Comm. C. N. Rao(et al.)
  8. Spectrochim. Acta v.31A C. N. R. Rao;H. S. Randhawa;N. V. R. Reddy;D. Chakravorty
  9. Physiol. Chem. Phys. v.8 O. D. Bonner;J. Jordan
  10. J.C.S. Faraday I v.76 C. P. Rao;Padmanabhan;C. N. R. Rao
  11. J.C.S. Faraday I v.74 B. M. Rode;Phomas Pontani;Gernot Heckmann
  12. J.C.S. Farady II v.71 M. J. Adams(et al.)
  13. The Sciences and Tech., Korea University v.22 Y.S. Choi(et al.)
  14. J. Phys. Chem. v.77 A. Gupta;C. N. R. Rao
  15. J. Chem. Soc. Chem. Comm. K. G. Rao;E. D. Becker;C. N. R. Rao
  16. J. Amer, Chem. Soc. v.100 J. E. Del Bene