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. 2023 Jun 5;13(25):16828–16836. doi: 10.1039/d3ra03324d

Carbene excitation energies (eV) and atomic spin densities (% of total) for triplet states.

Compound HOMO–LUMO gap E ST(v) E ST(a) SD(C) SD(N) SD(E)
Me2im 5.86 4.30 3.75 82.8 5.5 5.5
NOHC 5.61 3.84 3.47 83.9 5.8 5.3
NSHC 4.62 3.34 2.92 79.4 5.5 9.0
NSeHC 4.28 3.07 2.66 78.4 5.4 10.1
NTeHC 3.73 2.67 2.27 75.4 4.7 13.0