Ru-σ-alkynyl compounds of tetraanilinopyridinato-diruthenium(II,III) core: synthesis and structural characterization

Diruthenium σ-iminophenylacetylide complexes from on-complex Schiff base condensation

“…3 and 4) with peaks at circa 460 and 755 nm, which are similar to those of related Ru 2 (ap) 4 (C^CR)-type compounds from prior studies [2,37,47,49,50,54]. Based on a previous TD-DFT study of the model compounds for 1 and 2 [54], the high energy band arises from the transition of p(C^C) to d * (RueRu), while the low energy band is due to a combination of the p(RueN) and p(RueRu) to d * (RueRu).…”

Further studies of tetrakis(N,N′-dialkylbenzamidinato)diruthenium(III) chloro and alkynyl compounds: molecular engineering of metallayne monomers

“…These gaps, although larger than those reported for both the ap and D ArF based compounds [1], are still fairly small in comparison with those found for the monomers of well-known conjugated organic oligomers, such as oligo(phenylene-ethynylene) and oligo(phenylene-vinylene) [25,26]. Table 3 Selected bond lengths (Å ) and angles (8) for molecules 2c, 3c and 4b 2c 3c 4b…”

Further molecular engineering of diruthenium-(2-anilinopyridinate) alkynyl compounds through ligand design

“…Several families of diruthenium alkynyl compounds have since emerged including those based on Ru 2 (DArF) 4 (DArF = diarylformamidinate) [2], Ru 2 (ap) 4 and Ru 2 (F x ap) 4 (F x ap = 2-(fluoroanilino)-pyridinate) [3][4][5] and Ru 2 (DMBA) 4 (DMBA = N,N 0 -dimethylbenzamidinate) [6]. Further studies of these compounds demonstrated facile charge transfer along the Ru 2 -alkynyl backbones [7][8][9], and a remarkably small attenuation factor (c) was deduced from the voltammetric and spectroscopic data of the [Ru 2 (ap) 4 ] 2 (l-C 2n ) family with n ranging from 1 to 6 [8].…”