Ru(iv)–Ru(iv) complexes having the doubly oxido-bridged core with a bridging carbonato or hydrogencarbonato ligand

Abstract

Ru(iv)–Ru(iv) complexes having CO32− or HCO3− on the {Ru2(μ-O)2} diamond core were isolated and structurally characterized. The electrochemical and spectroscopic behaviors with those of Ru(iii)–Ru(iv) species were compared and their reactivities were reported.

Edge-sharing bi-octahedral diruthenium(iv,iv) compounds containing Ru–Ru bonds chelated and bridged by two carbonate and two oxo groups

“…Furthermore, the characterization of Ru–Ru bonds with short distances and high bond orders in electron-poor high-valent Ru 2 centers has boosted experimental and theoretical research. 5,29 To date, ESBO Ru⋯Ru interactions seem to present a broader range of distances (2.4334–3.733 Å, see Table 1) 6–32 than related paddle–wheel Ru–Ru bonds, which span a range from 2.248 to 2.2532(2.499(3)) Å. 1,2 In general, Ru⋯Ru interactions depend primarily on the electronic configuration of the Ru 2 core as well as the type of ligands; therefore, it is meaningfully interesting to search for the lower limit of ESBO Ru–Ru bond distance.…”