3,4-Diiodo-2,5-dimethylthiophene
✍ Scribed by Cseh, Liliana ;Mehl, Georg H. ;Clark, Stephen ;Archibald, Stephen J.
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 325 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
No coin nor oath required. For personal study only.
✦ Synopsis
In the crystal structure of the title compound, C~6~H~6~I~2~S, the molecules pack to form one-dimensional chains connected by intermolecular S...I interactions.
📜 SIMILAR VOLUMES
In the molecule of the highly conjugated title compound, C 20 H 18 N 2 O 4 S 3 , the thiophene rings are in an antiparallel arrangement and both azomethine bonds adopt the thermodynamically stable E isomeric form. The mean planes of the terminal thiophene rings are twisted by 9.04 (4) and 25.07 (6)
The conformation of the title molecule, C 24 H 26 N 2 O 4 S, is influenced by intramolecular N-HÁ Á ÁN hydrogen bonding, andinteractions link the molecules into centrosymmetric dimers. The crystal packing is further stabilized by weak intermolecular C-HÁ Á ÁO hydrogen bonds.
The title compound, C 6 H 6 N 2 S, consists of a thiophene ring carrying three substitutent groups. Two NÐHÁ Á ÁN intermolecular hydrogen bonds link neighboring molecules into a threedimensional network.
3-Methoxy-2,Giimethylthiophene and 3,4diiethoxy-2,5dimethylthiophene have been prepared from 3,4-dibromo-2,5dimethylthiophene and sodium methoxide using Cu(I)Br as a catalyst. The influence of some cosolvents and reaction temperature is investigated. Best results are obtained by refloxing in DMF at
A new type of thiophene derivative with potential pharmacological activity, viz. 2-amino-4-(2-naphthalyl)thiophene-3carbonitrile, C 15 H 10 N 2 S, has been prepared and studied by NMR and single-crystal X-ray diffraction techniques. The molecule contains two different groups, naphthalene and thiophe