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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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Molecular structure of 2, displacement ellipsoids drawn at 50 % probability level
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Fig3: Molecular structure of 2, displacement ellipsoids drawn at 50 % probability level

Mentions: Compound 2 crystallizes in monoclinic space group P21/c with four molecules in the unit cell. Molecular structure together with the atom labeling scheme is shown in Fig. 3. The system of rings is not flat. Dihedral angle between mean planes defined by skeletal atoms of C1–C6 phenyl ring and N1–N4–C7 tetrazole ring is equal to 24.88º, and between C12 and C17 phenyl ring and N5–N8–C18 tetrazole ring is even wider 36.03º.Fig. 3


Synthesis and spectroscopic properties of new bis-tetrazoles.

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

Molecular structure of 2, displacement ellipsoids drawn at 50 % probability level
© Copyright Policy
Related In: Results  -  Collection

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

Fig3: Molecular structure of 2, displacement ellipsoids drawn at 50 % probability level
Mentions: Compound 2 crystallizes in monoclinic space group P21/c with four molecules in the unit cell. Molecular structure together with the atom labeling scheme is shown in Fig. 3. The system of rings is not flat. Dihedral angle between mean planes defined by skeletal atoms of C1–C6 phenyl ring and N1–N4–C7 tetrazole ring is equal to 24.88º, and between C12 and C17 phenyl ring and N5–N8–C18 tetrazole ring is even wider 36.03º.Fig. 3

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