Synthesis and characterisation of 5,6-bis(salicylideneimino)-1,10-phenanthroline and its trinuclear complexes


Demirhan N. , AVCIATA U. , GUL A.

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, cilt.44, ss.729-732, 2005 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 44 Konu: 4
  • Basım Tarihi: 2005
  • Dergi Adı: INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
  • Sayfa Sayısı: ss.729-732

Özet

As a multidonor ligand with phenanthroline and salicylaldimine functionalities on the same molecule, 5,6-bis(salicylideneimino)-1,10-phenanthroline (LH2) has been,synthesized by the reaction of 5,6-diamino-1,10-phenanthroline with salicylaldehyde and its metal complexes with Ni(II) and Cu(II) have been prepared. Both of the isolated complexes are trinuclear with metal/ligand ratio of 3:2. Protonation constants of LH2 which have been determined by potentiometric titration in solution are log K-1=8.96, log K-2=15.88, log K-3=8.73 and log K-4=2.78. The newly synthesized compounds have been verified by IR, H-1 NMR and mass spectra together with elemental analysis.