Thermodynamics of complexation of isatin-3-thiosemicarbazone (HIT) and other related derivatives with some metal ions

Clicks: 558
ID: 42750
2002
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Star

Ranked #3 of 52 articles by views in journal of the serbian chemical society

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Proton-ligand formation constants of isatin-3-thiosemicarbazone (HIT) ; N-acetylisatin-3-thiosemicarbazone (HAIT) and 5-(p-nitrobenzoyl)-1,2,4-triazino[5,6-b]indole-3-thione (HBITr) ligands and their corresponding metal-ligand formation constants with Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, UO22+ and Th2+ ions were determined pH-metrically at 10, 20, 30 and 40°C in 75 %(v/v) ethanol–water. The thermodynamic parameters (DG, DH and DS) were also evaluated. It was found that both log K1 and –DH1, for HIT and HAIT-complexes are somewhat larger than log K2and –DH2, indicating a change in the dentate character of these ligands from tridentate (ONN-donors) in 1:1 chelates to bidentate (ON-donors) in 1:2; M:L chelates. In contrast, the values of log K2 and – DH2 for HBITr-complexes are somewhat larger than log K1 and –DH1, indicating a strong trans-effect for the second coordination. The dissociation process is non-spontaneous, endothermic and entropically unfavourable while the complexation process is spontaneous, exothermic and entropically favourable. The thermodynamic parameters were separated into their electrostatic (el) and non-electrostatic (non) constituents.
Reference Key
mena2002thermodynamicsjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors H. H. Mena, M. M. Mashaly, M. El-Behairy, H. S. M. Seleem
Are you one of these authors? Claim your profile
Journal journal of the serbian chemical society
Year 2002
DOI
DOI not found
URL
http://www.shd.org.yu/HtDocs/SHD/Vol67/No4/V67-No4-04.pdf
Keywords
chemistry Organic Chemistry Biotechnology inorganic chemistry

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.