For the synthesis of prbimRu (cf. Scheme S1), the complex [RuCl2(DMSO)4] (DMSO: dimethyl sulfoxide) was used as the Ru(II) source. In dimethylformamide, two equivalents of prbim were coordinated. In a second step, the tpphz ligand was introduced in ethylene glycole and the resulting complex isolated as its chloride salt or hexafluorophosphate salt. The chloride salt was then used in an anion metathesis reaction with NaBArF to isolate prbimRu. By coordination of [Pt(DMSO)2I2], the final prbimRuPt was obtained in 35% yield. The respective high resolution MALDI mass spectrometry (MALDI-MS), 1 H-and 13 C-NMR spectra of prbimRu and prbimRuPt prove the integrity and purity of the complexes and can be found in the Supporting Information (see Appendix in Section 13 of Supporting Information).