Figure 5.

SOC between S_m and T_n (n = 1–8) and MOs involved in the SOC of dimer 2 of C(C₆H₅)₄, Si(C₆H₅)₄, and Ge(C₆H₅)₄ crystals. a) Relationship between ${\left|⟨{\mathrm{\Psi }}_n^1\left|\overline{H_{SO}}\right|{\mathrm{\Psi }}_n^3⟩\right|}^2$ and m for dimer 2 of C(C₆H₅)₄, Si(C₆H₅)₄, and Ge(C₆H₅)₄. b) MOs related to the S₉–S₀ and T₇–S₀ transitions of dimer 2 of Ge(C₆H₅)₄. c) MOs related to the S₉–S₀ and T₄–S₀ transitions of dimer 2 of Ge(C₆H₅)₄. d) MOs related to the S₉–S₀ and T₈–S₀ transitions of dimer 2 of Si(C₆H₅)₄.