Synthesis and spectroscopic properties of Re(R)(CO)3(α-diimine) (R  alkyl; α-diimine  R′-pyCa, R′-DAB) complexes. Crystal structure of Re(Me) (CO)3 (iPr-DAB)

Preparation and characterization of rhenium(I) compounds with amino ester derivatized diimine ligands. Investigations of luminescence. Crystal structures of Re(CO)3Cl(pyca-β-Ala-OEt) and Re(CO)3Cl(pyca-l-Asp(OMe)-OMe)

“…agreement with its charge transfer assignment. This has been observed for similar Re compounds [38] and was also observed in our previous study on group 6 compounds [24,25]. The energy shift for compounds 1-6 on changing solvent from CH 2 Cl 2 to MeOH is 1.0 · 10 3 -1.6 · 10 3 cm À1 .…”

Emission spectroscopy of metal-to-ligand-charge-transfer states of HRe(CO)3(H-dab), model system for α-diimine rhenium tricarbonyl complexes

“…The simulated spectrum exhibits an intense peak at 23 200 cm -1 in agreement both with the experimental spectrum recorded for this class of molecules [10] and the published theoretical spectrum [5]. The shoulder at 35 000 cm -1 and the weak absorption at 15 000 cm -1 obtained in our previous simulation [5] do not appear in Fig.…”

FT-EPR study of alkyl radicals formed in the photochemical reaction of Re(alkyl)(α-diimine) and Ru(alkyl)(α-diimine) complexes

“…The Re-alkyl complexes display a strong absorption band in the visible. From the solvatochromism of this absorption band and data from Resonance Raman studies it can be concluded that it represents an MLCT transition [22]. In the optical spectra of these complexes there is no evidence of a a -i' band over the wavelength region from 300 to 550 nm.…”