Spectral study of 1,5-bis (3-hydroxy-2-pyridylmethylidene) thiocarbohydrazone
✍ Scribed by E. Sánchez Romero; J.L. Gómez Ariza; A. Guiraúm Pérez
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 186 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0022-2860
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1,5-Bis( 2,3\_dihydroxyphenylmethylene) thiocarbohydrazone was synthesized; its ionization constanta are reported. A procedure ia described for the spectrofluorimetric determination of 5-546 ng ml-' zinc in 60/40 (v/v) ethanol/water medium, acetate-buffered to apparent pH 6.5 (LX= 409 nm, & ,,, = 50
The title compound, C 30 H 32 N 2 O 6 , has a center of symmetry. There are two intramolecular OÐHÁ Á ÁN hydrogen bonds, with an OÁ Á ÁN distance of 2.686 (2) A Ê .
In the crystal structure of the title compound, C 7 H 10 O 2 S 5 , weak intermolecular SÁ Á ÁS interactions and strong intra-and intermolecular O-HÁ Á ÁO hydrogen bonds link the molecules, forming a three-dimensional supramolecular architecture.