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1 Polish Journal of Chemistry

1 2009

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Self-assembled Synthesis, Characterization and Antimicrobial Activity of Dinuclear Lanthanide Salicylaldimine Complexes Derived from Cadaverine

Radecka-Paryzek W., Pospieszna-Markiewicz I., Kędzia B.

Polish Journal of Chemistry

2009

Vol. 83, nr 10

1693-1700

The new bimetallic lanthanide salicylaldimine complexes of the formula Ln2(H2L)3(NO3)6×2H2O, where Ln = La3+, Eu3+ or Gd3+ and H2L = N,N'- bis(salicyl -idene)-1,5-pentanediamine, are formed in a self-assembly process in volving the lanthanide template-induced one-pot Schiff base condensation reaction between salicylaldehyde and biogenic diamine cadaverine (1,5-pentanediamine). The complexes were characterized by spectroscopic methods (IR, 1H NMR, ESI-MS, UV-Vis, luminescence), and thermogravimetric and elemental analysis. The salicylaldimine with a potentially tetradentate N2O2 set of donor atms displays a rare coordination pattern acting as a neutral ligand using exclusively oxygens as donor atoms with out in volving the nitrogen atoms in the coordination. The europium(III) complex was tested for antimicrobial activity against Staph y lo coc cus aureus in a minimum inhibitory concentration (MIC) experiment.