The Crystal and Molecular Structure of P-Aminobenzaldehyde Cyclohexylthiosemicarbazone

P-Aminobenzaldehyde Cyclohexylthiosemicarbazone의 결정 및 분자구조

  • Chung Hoe Koo (Department of Chemistry, College of Natural Sciences, Seoul National University) ;
  • Chong Hee Kim (Department of Chemistry, College of Sciences, Sook Myung Women's University) ;
  • Young Ja Park (Department of Chemistry, College of Sciences, Sook Myung Women's University)
  • 구정회 (서울대학교 자연과학대학 화학과) ;
  • 김종희 (숙명여자대학교 이과대학 화학과) ;
  • 박영자 (숙명여자대학교 이과대학 화학과)
  • Published : 1981.12.30

Abstract

The crystal and molecular structure of P-aminobenzaldehyde cyclohexylthiosemicarbazone, C14H20N4S, has been determined from 2712 integrated intensities measured on a computer controlled four circle diffractometer with monochromated $CuK_{\alpha}$, X-ray radiation. The crystals are monoclinic, space group C2/c with eight molecules in a unit cell of dimensions, a = 12.488(2), b = 12.276(4), c = 19.997(6)${\AA}$ and ${\beta}=103.55(3)^{\circ}$. The structure was solved by Patterson and Fourier method and refined by a full-matrix least squares method to a final R value of 0.058 for all reflections. The C(8)-S bond is trans to N(2)-N(3) and C(8)-N(1) is cis to N(2)-N(3) bond. The cyclohexane ring has chair conformation and makes an angle of $40.7^{\circ}$ with the benzene ring. The molecules are linked by N(2)H…S hydrogen bonds into dimer-like units which are held together by $N-H{\ldots}N$ hydrogen bonds. Sulfur accepts second rather weak hydrogen bond from N(4). An intramolecular hydrogen bond exists between N(1) and N(3) atoms.

P-Aminobenzaldehyde cyclohexylthiosemicarbazone의 결정 및 분자구조를 Computer controlled four circle diffractometer에 의한 X-선 회절방법으로 해명하였다. 결정은 공간군 C2/c의 단사형계에 속하며 단위세포 상수는 a = 12.488(2), b = 12.276(4), c = 19.997(6)${\AA}$, ${\beta}=103.55(3)^{\circ}$이고 z = 8이다. 구조는 중원자법과 Fourier 방법으로 규명하였으며 full-matrix 최소자승법으로 정밀화하였다. 최종 R값은 2712개의 회절반점에 대하여 0.058이었다. 분자는 N(2)-N(3)결합에대하여 C(8)-S는 trans, C(8)-N(1)은 cis형으로 놓여 있으며 N(1)과 N(3) 원자들이 분자내 수소결합을 만들고 있다. 의자모양의 cyclohexane 고리는 benzene 고리와 $40.7^{\circ}$의 면각을 이루고 있다. 결정내의 분자들은 수소 결합들로 모여져 있는데 $N(2)-H{\ldots}S$ 수소결합이 분자들을 이합체 꼴을 만들며 이들 분자들을 $N-H{\ldots}N$ 수소결합들이 이어주고 있다.

Keywords

References

  1. J. Korean Chem. Soc. v.20 Y. J. Lee
  2. Ph. D. Dissertation, Seoul National University Hyun So Shin
  3. J. Korean Chem. Soc. v.19 C. H. Koo;H. S. Kim;C. H. Chang
  4. J. Korean Chem. Soc. v.17 Y. J. Lee;H. S. Kim;C. H. Koo;H. S. Shin
  5. M. S. Thesis, Seoul National University C. H. Chang
  6. I. W. Suh;Y. J. Park;Y. S. Lee
  7. Acta Cryst. v.B34 J. N. Brown;K. C. Agrawal
  8. Acta Cryst. v.B30 G. J. Palenik;D. F. Rendle;W. S. Carter
  9. Acta Cryst. v.B26 R. Restivo;G. J. Palenik
  10. Acta Cryst. v.B34 J. N. Brown;K. C. Agrawal
  11. Acta Cryst. v.B25 P. Domiano;G. F. Gasparri;M. Nardelli;P. Sgarabotto
  12. J. Pharmaceutical Soc. of Korea v.15 Y. S. Chough;W. H. Kim
  13. M. S. Thesis, Sook Myung Women's University C. H. Kim
  14. Acta Cryst. v.18 D. T. Cromer;J. T. Waber
  15. J. Chem. Phys. v.42 R. F. Stewart;E. R. Davidson;W. T. Simpson
  16. Acta Cryst. v.B25 E. J. Gabe;M. R. Taylor;J. P. Glusker;J. A. Minkim;A. L. Patterson