Pentacosacyclenes: cruciform molecular nanocarbons based on cyclooctatetraene.

ABSTRACT: Pentacosacyclene (PC) and pentacosacyclene tetraimide (PCTI) were obtained in concise syntheses involving radial extension of tridecacyclene. PC is an electron-rich hydrocarbon with a C₈₈ π-conjugated framework, whereas PCTI is electron-deficient and contains a C₉₆N₄ core. PC and PCTI both have non-planar saddle-shaped conformations, and PC was found to self-assemble with C₆₀ to produce a uniquely structured supramolecular crystalline phase. In solution, PCTI undergoes eight single-electron reductions, while PC exhibits two reversible oxidations and three reversible reduction events. Chemically generated anions of PC and PCTI showcase extended near-infrared to infrared absorptions, with the lowest energy bands observed at >3200 nm for the PCTI mo

SUBMITTER: Kumar R 

PROVIDER: S-EPMC11499954 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature