166543-75-5Relevant academic research and scientific papers
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)
Rossenaar, Brenda D.,Kleverlaan, Cornelis J.,Ven, Maartje C.E van de,Stufkens, Derk J.,Oskam, Ad,et al.
, p. 153 - 162 (1995)
The synthesis, structure and spectroscopic properties of several complexes of the type Re(R)(CO)3(α-diimine) (R = alkyl) are reported.The structure of Re(Me)(CO)3(iPr-DAB) has been determined by a single-crystal X-ray diffraction study.The molecule has a distorted octahedral geometry, with the three carbonyls in a fac-geometry.The complexes possess strong absorption bands in the visible region which are assigned to MLCT transitions with the aid of resonance Raman spectroscopy; the Raman spectra do not provide any evidence for a ?(Re-R) ?*(α-diimine) transition within this absorption band.The UV-vis spectrum of Re(Bz)(CO)3(iPr-DAB) (Bz = benzyl) shows a distinct shoulder at the low-energy side of the visible band, which is attributed to the interaction between the d?(Re)-orbitals and the ?-orbitals of the benzyl group.The UV-photoelectron spectrum of Re(Me)(CO)3(iPr-DAB) shows that ?(Re-Me) has a higher ionization potential than the d?(Re)-orbitals, a result that is of importance for the interpretation of the photochemical behaviour of this complex. Keywords: Raman spectroscopy; Crystal structure; Rhenium; Photoelectron spectroscopy; Diimine; Alkyl
