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Buthalital and methitural – 5,5-substituted derivatives of 2-thiobarbituric acid forming the same type of hydrogen-bonded chain
- Source :
- Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 12, Pp 1908-1912 (2017)
- Publication Year :
- 2017
- Publisher :
- International Union of Crystallography, 2017.
-
Abstract
- The molecule of buthalital, (I) [systematic name: 5-(2-methylpropyl)-5-(prop-2-en-1-yl)-2-sulfanylidene-1,3-diazinane-4,6-dione], C11H16N2O2S, exhibits a planar pyrimidine ring, whereas the pyrimidine ring of methitural, (II) [systematic name: 5-(1-methylbutyl)-5-[2-(methylsulfanyl)ethyl]-2-sulfanylidene-1,3-diazinane-4,6-dione], C12H20N2O2S2, is slightly puckered. (I) and (II) contain the same hydrogen-bonded chain structure in which each molecule is connected, via four N—H...O=C hydrogen bonds, to two other molecules, resulting in a hydrogen-bonded chain displaying a sequence of R22(8) rings. The same type of N—H...O=C hydrogen-bonded chain has previously been found in several 5,5-disubstituted derivatives of barbituric acid which are chemically closely related to (I) and (II).
Details
- Language :
- English
- ISSN :
- 20569890
- Volume :
- 73
- Issue :
- 12
- Database :
- Directory of Open Access Journals
- Journal :
- Acta Crystallographica Section E: Crystallographic Communications
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.13915a91ea8f4ca7a8f539fbdf5ef4b9
- Document Type :
- article
- Full Text :
- https://doi.org/10.1107/S205698901701653X