Fig. 2.

(A–C) Partial ³¹P NMR (CDCl₃/CD₂Cl₂; 297 K) spectra and (D–H) ¹H NMR spectra (DMSO-d₆; 297 K) of (A and D) the free 60° diplatinum(II) acceptor (5), (F) phenoxy-boron dipyrromethene (BODIPY) (3), (H) phenylthiol-BODIPY (4), (B and E) metallacycle 1, and (C and G) metallacycle 2. Experimental (red) and calculated (blue) ESI-TOF-MS spectra of (I) [1 – 5OTf]⁵⁺ and (J) [2 – 5OTf]⁴⁺. Absorption and fluorescence spectra of (K and L) metallacycle 1 and (M and N) metallacycle 2 in different solvents (λ_ex: 570 nm for 1 and 610 nm for 2; c = 10 μM).