Werz, Daniel B.Daniel B.WerzDuefert, AlexanderAlexanderDuefert2018-11-072018-11-072008https://resolver.sub.uni-goettingen.de/purl?gro-2/52918DFT studies on oligocyclopropenones and related systems 5(n)-9(n) are reported. A strong sigma/pi interaction between the pi system and the or framework of the three-membered rings is observed in almost all cases, leading to a perpendicular arrangement of the pi systems in the most favored conformation. Also the shape of cyclic congeners is strongly influenced by sigma/pi interactions.journal_article10.1021/ol802256618954063000260922500034