Wissler, Joerg published the artcile5,5′-Dimethyl-4,4′-bis[2-(2-methyl-3-thienyl)cyclopentenyl]-2,2′-bithiophene, Product Details of C15H14Cl2S2, the publication is Acta Crystallographica, Section E: Structure Reports Online (2007), 63(6), o2813-o2814, database is CAplus.
The mol. of 5,5′-dimethyl-4,4′-bis[2-(2-methyl-3-thienyl)cyclopentenyl]-2,2′-bithiophene, C30H30S4, is located on a center of inversion. The cyclopentene ring is almost planar. The thiophene rings are twisted out of the plane of the cyclopentene ring by 47.41(8) and 46.25(9)°. Crystallog. data are given.
Acta Crystallographica, Section E: Structure Reports Online published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C6H16OSi, Product Details of C15H14Cl2S2.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics