Synthesis, Stability, Spectral and Characterization of Mercury (II) Complexes with a Novel Bis-Schiff base Ligand - Egyptian Knowledge Bank

1410

Synthesis, Stability, Spectral and Characterization of Mercury (II) Complexes with a Novel Bis-Schiff base Ligand

Article

Last updated: 01 Jan 2025

Subjects

Abstract

ANEW reagent, (2E,2'Z) -2,2'- (3- ((E)- (2-hydroxyphenyl) ..........diazenyl) pentane-2,4- diylidene) bis (hydrazinecarbothio-amide) (OPTS) was synthesized and studied. Acid-base, spectrophotometric properties of OPTS were studied in 50% ethanol-water mixture solutions at pH 3–11. Dissociation constants of the reagent OPTS have been determined by spectrophotometry and potentiometric titrations: pK1=9.60±0.02; pK2=10.45±0.05 in its computational and graphical versions at an ionic strength 0.1M. The stability constants of the Hg-OPTS are logK1=6.18±0.04 and logK2=5.22±0.05. The reaction of Hg(II) with OPTS gives mononuclear complex in 50% ethanol - water mixture solution with λmax = 448 nm at pH 8.5. The effects of foreign ions and masking agents on the determination of Hg(II) with the new reagent were monitored. The mono complex obey the Beer law in the Hg(II) concentration range 5.10–50.17 mg/25ml. Molar absorption coefficients was determined. In this paper, we report the synthesis of the novel Hg(II) complexes with OPTS. The complexes were characterized by UV-vis and IR spectroscopy, elemental analysis, molar conductivity and thermal decomposition.

DOI

10.21608/ejchem.2011.1410

Keywords

Mercury (II) complexes, Bis (thiosemicarbazone), Synthesis, Physico-chemical characterization and Thermal decomposition

Volume

Article Issue

Related Issue

306

Issue Date

2012-08-01

Receive Date

2011-08-15

Publish Date

2011-10-31

Page Start

549

Page End

563

Print ISSN

0449-2285

Online ISSN

2357-0245

Article File

EJCHEM_Volume 54_Issue 4_Pages 549-563.pdf

PDF . 627.6kB

Link

https://ejchem.journals.ekb.eg/article_1410.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=1410

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Type Code

292

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle