Abstract

Synthesis and characterization of novel polymeric biologically active mixed ligand triazole-3-thiones complexes

Author(s): S.A.Ibrahim, S.A.El-Gyar, A.Abd El-Sameh, M.A.El-Gahami

A series of novel polymeric mixed ligand Co(II), Ni(II), Cu(II) and Cd(II) complexes[MLL’Cl2]mH2O and[MBHTCl.2H2O]nH2O where M=Co(II), Ni(II),Cu(II), Cd(II);m=0-3; L=4-amino-5-benzyl-4H-1,2,4-triazole-3-thione (ABT), 5-benzyl-4-(benzylidene-amino)-4H-1,2,4-triazole-3-thione (BBT), 5- benzyl-4-[(2-hydroxybenzylidene)-amino]-4H-1,2,4-triazole-3-thione (HBHT) and 5-benzyl-4-[(4-mehtoxy-benzylidene)-amino] -4H-1,2,4-triazole-3-thione (BMT) as a primary ligands and L=1,10-phenanthrolinemono-hydrate (phen) or -bipyridyl (bipy) as secondary ligands have been prepared. The analytical data indicated that the interaction between the binary chelates and the secondary ligands proceeds through either substitution or addition reactions. The structures were determined by elemental analysis, molar conductance, magneticmeasurements, thermal behaviour, infrared and electronic spectral data. The stoichiometry of synthesized complexes is 1:1:1 or 1:1:2 (metal: primary ligand: secondary ligand). Octahedral structurewas proposed for the obtained complexes in which the central metal atom is hexa-coordinated. The lowsolubility of the complexes in common organic solvents with their magneticmoment values indicated their polymeric nature. The biological activity of the binary chelates enhanced significantly upon their interaction with the secondary ligands.


Share this       
eutics.com | 523: Origin is unreachable

Error 523 Ray ID: 4e943fbadabeab4c • 2019-06-19 08:49:18 UTC

Origin is unreachable

You

Browser

Working
Toronto

Cloudflare

Working
eutics.com

Host

Error

What happened?

The origin web server is not reachable.

What can I do?

If you're a visitor of this website:

Please try again in a few minutes.

If you're the owner of this website:

Check your DNS Settings. A 523 error means that Cloudflare could not reach your host web server. The most common cause is that your DNS settings are incorrect. Please contact your hosting provider to confirm your origin IP and then make sure the correct IP is listed for your A record in your Cloudflare DNS Settings page. Additional troubleshooting information here.