Reactions of Cp2MCl2 (M=Ti or Zr) with imine-oxime ligands. Formation of metallacycles.
The reactions of bis(cyclopentadienyl)titanium(IV)/zirconium(IV) dichloride with a series of imine-oxime ligands (LH2), derived by condensing benzil-alpha-monoxime and 2-phenylenediamine, 4-phenylenediamine, 4-methyl-2-phenylenediamine, 2,6-diamino-pyridine, have been studied in anhydrous tetrahydrofuran in the presence of base and metallocycles of the [Cp2M(L)] (M=Ti or Zr) type have been isolated. Tentative structures have been proposed for the products based on elemental analysis, electrical conductance and spectral (electronic, IR and (1)H-NMR) data. Proton NMR spectra indicate that on the NMR time scale there is rapid rotation of the cyclopentadienyl ring around the metal-ring axis at 25 degrees C. Studies were conducted to assess the growth inhibiting potential of the complexes synthesized and the ligands against various bacterial strains.
Pandey
Om Prakash
OP
Chemistry Department, D.D.U. Gorakhpur University, Gorakhpur - 273009, India. sengupta2002@yahoo.co.in
Sengupta
Soumitra Kumar
SK
Tripathi
Chandra Mohan
CM
D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D003500:Cyclization; D007097:Imines / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010091:Oximes / Q000737:chemistry*; D013057:Spectrum Analysis; D014025:Titanium / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry
D000900:Anti-Bacterial Agents; D007097:Imines; D008024:Ligands; D009942:Organometallic Compounds; D010091:Oximes; D015040:Zirconium; D014025:Titanium