Studies on transition metal complexes of herbicidal compounds. II: Transition metal complexes of derivatized 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine)

  • Worku Dinku Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Negussie Megersa Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • V.J.T. Raju Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Theodros Solomon Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Jan Åke Jönsson Department of Analytical Chemistry, Lund University, Box 124, S-221 00 Lund, Sweden
  • Negussie Retta Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
Keywords: Metal complexes, Atrazine derivatives, Hydrazinoethanol substitution, Monobasic tridentate NNO donor, Diminished (reduced or minimized) antimicrobial activities

Abstract

2(2-Hydroxyethyl)hydrazino-4-ethylamino-6-isopropylamino-s-triazine (HEATZ), a derivative of 2-chloro-4-ethylamino-6-isopropylamino-s-triazine, atrazine (ATZ) – a well known herbicide has been studied for complex formation with cobalt(II), nickel(II), and copper(II). Analytical, conductance, thermal, and spectral studies suggest that HEATZ is a monobasic NNO donor and it forms binuclear octahedral metal complexes, possessing alkoxide bridging. Cobalt(II) complex exhibits thermochromism. Antimicrobial studies on E. coli and S. aureus show the absence of growth inhibitory activities for HEATZ and its metal complexes which is attributed to the combined effect of derivatization of ATZ and metal complexation.

 

KEY WORDS: Metal complexes, Atrazine derivatives, Hydrazinoethanol substitution, Monobasic tridentate NNO donor, Diminished (reduced or minimized) antimicrobial activities

 

 

Bull. Chem. Soc. Ethiop. 2003, 17(1), 35-43.  

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eISSN: 1726-801X
print ISSN: 1011-3924