The first two examples of a tetrasilatetrathiacirculene were synthesized in two steps from a tetraiodotetrathienylene by using a fourfold intramolecular dehydrogenative silylation of C−H bonds as the key step. A single-crystal X-ray diffraction analysis revealed that tetrasilatetrathiacirculene contains a perfectly planar radialene skeleton. The excited-state dynamics of tetrasilatetrathiacirculene were evaluated by steady-state and time-resolved spectroscopic measurements, revealing an efficient intersystem crossing in the excited state.
ASJC Scopus subject areas
- Organic Chemistry