The Heilbronner strategy in its current form does not consider oscillator strength. Like most other inverted gap molecules, the compounds discussed here have almost exclusively dark S 1 states due to the lack of overlap between the HOMO and LUMO (Table ). Nevertheless, we expect that the increased negative gaps presented here will provide more space to maneuver within the trade-off that exists between negative gap and oscillator strength. In this way, sufficient orbital overlap to promote oscillator strength may be achieved, while a negative gap can be retained even if it is reduced due to the increased orbital overlap.