THE POTENTIOMETRIC DETERMINATION OF STABILITY-CONSTANTS OF MACROCYCLIC ETHERS USING LINEAR-REGRESSION TECHNIQUES

GOCMEN A., ERK C.

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, cilt.347, sa.12, ss.471-474, 1993 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 347 Sayı: 12
  • Basım Tarihi: 1993
  • Doi Numarası: 10.1007/bf00324235
  • Dergi Adı: FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.471-474
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

The stability constants of various stoichiometries of NaCl complexes of the macrocyclic ethers of 15-crown-5, benzo-15-crown-5, 18-crown-6 and benzo-18-crown-6 were measured by maintaining identical initial ion-ligand concentrations [A0+] = [L(o)] and using the expression of the stability constant beta(i) of a complex formation, 1/beta(i)[L(o)]n+m-1 = (1 - nP')n(1 - mP')m/P' where P' = P(AL)/[1 + P(AL)(M - 1)]. The potentiometric measurements were carried out in water with a glass membrane electrode in a computer-ion meter system.