1,3-Dibenzoylimidazolidine-2-thione and 1,3-dibenzoyl-3,4,5,6-tetrahydropyrimidine-2(1H)-thione
| Autor: | Murat Koca, Veysel T. Yilmaz, Frank W. Heinemann, Süleyman Servi, Canan Kazak |
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| Přispěvatelé: | Ondokuz Mayıs Üniversitesi |
| Rok vydání: | 2005 |
| Předmět: |
Models
Molecular Pyrimidine Chemistry Stereochemistry Cyclohexane conformation Thiones General Medicine Crystal structure Imidazolidinethione Ring (chemistry) Alkali metal Crystallography X-Ray Imidazolidines General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound symbols.namesake Crystallography Benzoyl chloride Pyrimidines symbols van der Waals force |
| Zdroj: | Acta crystallographica. Section C, Crystal structure communications. 61(Pt 6) |
| ISSN: | 0108-2701 |
| Popis: | Kazak, Canan/0000-0003-2475-8775; Yilmaz, Veysel/0000-0002-2849-3332 WOS: 000229464200030 PubMed: 15930680 The title compounds, 1,3- dibenzoylimidazolidine- 2- thione, C17H14N2O2S, ( I), and 1,3- dibenzoyl- 3,4,5,6- tetrahydropyrimidine-2( 1H)- thione, C18H16N2O2S, ( II), were obtained from the reactions of imidazolidine- 2- thione and 1,4,5,6-tetrahydropyrimidine- 2- thiol, respectively, with benzoyl chloride. Compounds ( I) and ( II) contain, respectively, imidazolidinethione [ C = S = 1.6509 ( 14) angstrom] and pyrimidinethione [ C = S = 1.6918 ( 19) angstrom] moieties bonded to two benzoyl rings. The molecules of ( I) exhibit C-2 symmetry, the C S bond lying along the twofold rotation axis, while the molecules of ( II) have mirror symmetry ( C-s). The imidazolidine ring in ( I) is essentially planar, while the pyrimidine ring in ( II) adopts a boat conformation. Molecules of ( I) are linked by weak intermolecular C - H center dot center dot center dot O interactions, while molecules of ( II) are held together by van der Waals interactions. |
| Databáze: | OpenAIRE |
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