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Reactions of Cp2MCl2 (M=Ti or Zr) with Imine-Oxime Ligands. Formation of Metallacycles
Chemistry Department, D.D.U. Gorakhpur University, India
* Author to whom correspondence should be addressed.
Received: 18 November 2004; Accepted: 24 December 2004 / Published: 14 July 2005
Abstract: The reactions of bis(cyclopentadienyl)titanium(IV)/zirconium(IV) dichloridewith a series of imine-oxime ligands (LH2), derived by condensing benzil-α-monoxime and2-phenylenediamine, 4-phenylenediamine, 4-methyl-2-phenylenediamine, 2,6-diamino-pyridine, have been studied in anhydrous tetrahydrofuran in the presence of base andmetallocycles of the [Cp2M(L)] (M=Ti or Zr) type have been isolated. Tentative structureshave been proposed for the products based on elemental analysis, electrical conductance andspectral (electronic, IR and 1H-NMR) data. Proton NMR spectra indicate that on the NMRtime scale there is rapid rotation of the cyclopentadienyl ring around the metal-ring axis at25oC. Studies were conducted to assess the growth inhibiting potential of the complexessynthesized and the ligands against various bacterial strains.
Keywords: Titanium(IV); zirconium(IV); imine-oxime; IR; PMR; antibacterial activity
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Pandey, O.; Sengupta, S.; Tripathi, C. Reactions of Cp2MCl2 (M=Ti or Zr) with Imine-Oxime Ligands. Formation of Metallacycles. Molecules 2005, 10, 653-658.
Pandey O, Sengupta S, Tripathi C. Reactions of Cp2MCl2 (M=Ti or Zr) with Imine-Oxime Ligands. Formation of Metallacycles. Molecules. 2005; 10(6):653-658.
Pandey, O.; Sengupta, S.; Tripathi, C. 2005. "Reactions of Cp2MCl2 (M=Ti or Zr) with Imine-Oxime Ligands. Formation of Metallacycles." Molecules 10, no. 6: 653-658.