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Synthesis and spectroscopic properties of new bis-tetrazoles.

Pazik A, Skwierawska A - J Incl Phenom Macrocycl Chem (2012)

Bottom Line: Syntheses of N,N'-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described.The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu(2+) ion.The structure of ligand 2 has been deduced by X-ray crystallography.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical Technology, Chemical Faculty, Gdansk University of Technology, 80-233 Gdańsk, Poland.

ABSTRACT
Syntheses of N,N'-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described. The complexing properties of these compounds towards metal cations (Fe(2+), Cu(2+), Zn(2+), Co(2+), Ni(2+)) were investigated by absorption and infrared spectroscopy. The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu(2+) ion. Changes in UV-Vis absorption spectra and IR spectra of compound 6 under various concentrations of Cu(2+) ion in methanol suggest formation of very unstable complex. The structure of ligand 2 has been deduced by X-ray crystallography.

No MeSH data available.


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IR spectra (film) of pure ligand 6 (a) compared with its complex with copper(II) (b)
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Fig7: IR spectra (film) of pure ligand 6 (a) compared with its complex with copper(II) (b)

Mentions: In order to confirm complexation of 6 with Cu2+ ion, series of IR spectra of the ligand 6 in the presence of copper(II) chloride have been recorded within the range of 3500–500 cm−1. We took ligand and the copper(II) chloride and dissolved separately in a small amount of chloroform and methanol, respectively. The solutions were combined, stirred, solvent was removed and residue was dried in vacuum. Result solid was dissolved in dry CH2Cl2 and obtained solution was used for film preparation characterized with IR spectroscopy as shown in Fig. 7.Fig. 7


Synthesis and spectroscopic properties of new bis-tetrazoles.

Pazik A, Skwierawska A - J Incl Phenom Macrocycl Chem (2012)

IR spectra (film) of pure ligand 6 (a) compared with its complex with copper(II) (b)
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3824287&req=5

Fig7: IR spectra (film) of pure ligand 6 (a) compared with its complex with copper(II) (b)
Mentions: In order to confirm complexation of 6 with Cu2+ ion, series of IR spectra of the ligand 6 in the presence of copper(II) chloride have been recorded within the range of 3500–500 cm−1. We took ligand and the copper(II) chloride and dissolved separately in a small amount of chloroform and methanol, respectively. The solutions were combined, stirred, solvent was removed and residue was dried in vacuum. Result solid was dissolved in dry CH2Cl2 and obtained solution was used for film preparation characterized with IR spectroscopy as shown in Fig. 7.Fig. 7

Bottom Line: Syntheses of N,N'-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described.The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu(2+) ion.The structure of ligand 2 has been deduced by X-ray crystallography.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical Technology, Chemical Faculty, Gdansk University of Technology, 80-233 Gdańsk, Poland.

ABSTRACT
Syntheses of N,N'-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described. The complexing properties of these compounds towards metal cations (Fe(2+), Cu(2+), Zn(2+), Co(2+), Ni(2+)) were investigated by absorption and infrared spectroscopy. The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu(2+) ion. Changes in UV-Vis absorption spectra and IR spectra of compound 6 under various concentrations of Cu(2+) ion in methanol suggest formation of very unstable complex. The structure of ligand 2 has been deduced by X-ray crystallography.

No MeSH data available.


Related in: MedlinePlus