Fig. 3: Single-crystal X-ray diffraction and electronic circular dichroism (ECD) analysis of the enantiomers of S-NMI. | Communications Chemistry

Fig. 3: Single-crystal X-ray diffraction and electronic circular dichroism (ECD) analysis of the enantiomers of S-NMI.

From: Stepwise π-extension of double [5]helicene diimides to planar nanographene diimides

Fig. 3: Single-crystal X-ray diffraction and electronic circular dichroism (ECD) analysis of the enantiomers of S-NMI.

a Molecular structure of S-NMI determined by single-crystal X-ray diffraction; the rings along the helical core are labeled R1–R10. b, c Unit cell showing both enantiomers of S-NMI, with an inter-ring overlap distance of 3.57 Å between R1 and R1’. d, e ECD spectra of the P,P- and M,M-enantiomers of S-NMI in dichloromethane (c ≈ 10⁻⁵ M).

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