Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(-)-1-phenyl-ethyl ammonium percholorate


Ozbey S. , KAYNAK F. B. , TOGRUL M., DEMIREL N. , HOSGOREN H.

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, cilt.218, ss.381-384, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 218 Konu: 5
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1524/zkri.218.5.381.20734
  • Dergi Adı: ZEITSCHRIFT FUR KRISTALLOGRAPHIE
  • Sayfa Sayıları: ss.381-384

Özet

A new type of inclusion complex, S(-)-1 phenyl ethyl ammonium percholorate complex of R-(-)-2-ethyl-N-benzyl-4,7,10,13-tetraoxa-1-azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group P2(1) with cell dimensions a = 10.0000(8), b - 12.281(2), c = 12.331(1)Angstrom, beta = 102.052(7), Z = 2. The host-guest complex is held together by a strong system of hydrogen bonds between the two protons of the ammonium ion as well as the nitrogen and four oxygen atoms of the crown ether The C-O and C-C distances of the 15-membered ring average 1.418 and 1.501 Angstrom while the O-C-C and C-O-C angles average 110.2 and 113.3degrees. The average N-C distance is 1.476 Angstrom.