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Tube representation of the germylene–phosphane complex 2 and its transition state, 2(TS), for inversion. (M06-2X/def2tzvp (Ge), 6-311+G(d,p) (P), 6-31G(d) (Si, C, H); hydrogen atoms omitted for clarity; color code Ge (red), Si (gray), P (orange), C (black)).
