A Configurationally Stable Helical Indenofluorene Martínez Pinel, Álvaro Lezama, Luis Cuerva Carvajal, Juan Manuel Casares López, Raquel Blanco Suárez, Víctor Moreno Cruz, Carlos Millán Delgado, Alba We report the synthesis and study of the optoelectronic, magnetic, and chiroptical properties of a helically chiral diradicaloid based on dibenzoindeno[2,1-c]fluorene. The molecule shows a small HOMO–LUMO gap and a moderate singlet–triplet gap, which agrees with the results of DFT calculations. The helical structure of the compound, confirmed by X-ray diffraction, is configurationally stable, which allows the isolation of both enantiomers and the evaluation of the chiroptical properties (ECD). 2025-07-11T11:41:16Z 2025-07-11T11:41:16Z 2024-07-05 journal article Martínez-Pinel, Á., Lezama, L., Cuerva, J. M., Casares, R., Blanco, V., Cruz, C. M., & Millán, A. (2024). A configurationally stable helical indenofluorene. Organic Letters, 26(28), 6012–6017. https://doi.org/10.1021/acs.orglett.4c02128 https://hdl.handle.net/10481/105218 10.1021/acs.orglett.4c02128 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional American Chemical Society