19-Electron arenecyclopentadienyl complexes of ruthenium

High Conductivity in a Nonplanar n-Doped Ambipolar Semiconducting Polymer

“…35 (RuCp*mes) 2 was synthesized following previously reported procedures. 38,39 P(BTP-DPP) was dissolved in a 50:50 volume percent cosolvent of chlorobenzene and 1,2-dichlorobenzene at 10 mg/mL and heated at 80 °C and stirred for 1 h prior to being filtered with a 1 μm pore sized polytetrafluoroethylene (PTFE) filter. (RuCp*mes) 2 was dissolved in toluene at various concentrations (0.05, 0.1, 0.25, 0.5, 1, 2, and 4 mg/mL) and heated to 80 °C for 1 h without being filtered.…”

Pentamethylcyclopentadienyl organoiron(II) hydrazone complexes: Synthesis, spectroscopic characterization, and second-order nonlinear optical properties. X-ray crystal structure of

“…Interestingly, the peak potential of 5 is 40 mV more cathodic than that of 4, which indicates that the electronic releasing effect of the ferrocenyl fragments on the sandwich iron center is somewhat greater than that of the mesityl subunit. Additionally, the cyclovoltammogram of compound 6 exhibited the irreversible reduction wave of the [Cp * Ru(g 6 -mesityl)] + entity, at a very negative potential (E pc = À2.29 V), more cathodic than that of the iron mixed sandwich terminus [42,43].…”

“…The compounds 3-5 show one irreversible oxidation wave in their cyclovoltammograms, whereas the heterobinuclear hydrazone 6 exhibits two irreversible oxidation processes, the most anodic one being attributed to the Ru(II)/Ru(III) couple [42,43]. The potential values listed in Table 2 are in agreement with those previously reported for methylated derivatives, ½Cp 0 Feðg 6 -C 6 Me 5Àn H n NHR 0 Þ þ PF À 6 (Cp 0 = Cp, Cp * ; R 0 = H, n-Pr; n = 0, 4) [11].…”

Bimetallic η6,η1SCS- and PCP-Pincer Ruthenium Palladium Complexes: Synthesis, Structure, and Catalytic Activity

“…In addition, irreversible reductions were observed at low potentials for bimetallic complexes [ 3 ] + −[ 6 ] + , which were absent from the cyclic voltammogram of their monometallic precursors 1 and 2 (see Table ). As irreversible reduction of ruthenium in [Ru(η 6 -arene)(η 5 -C 5 R 5 )] + complexes is known to occur below −2 V in acetonitrile, we interpret these reductions as Ru II /Ru I reductions. The reduction potentials for [ 3 ] + −[ 6 ] + are more positive than for [Ru(η 6 -C 6 H 6 )(η 5 -C 5 R 5 )] + complexes, which implies that the ruthenium center is also electron poor in the bimetallic complexes.…”