1137151-83-7Relevant academic research and scientific papers
Synthesis and characterization of platinum(II) complexes of 2N1O-donor ligands with a pendent indole ring
Shimazaki, Yuichi,Yajima, Tatsuo,Nakabayashi, Yasuo,Naruta, Yoshinori,Yamauchi, Osamu
, p. 887 - 893 (2009)
The Pt(II) complexes of 2N1O-donor ligands containing a pendent indole, 3-[N-2-pyridylmethyl-N-2-hydroxy-3,5-di(tert-butyl)benzylamino]ethylindole (Htbu-iepp), and 1-methyl-3-[N-2-pyridylmethyl-N-2-hydroxy-3,5-di(tert-butyl)benzylamino]ethylindole (Htbu-miepp) (H denotes an ionizable hydrogen), were synthesized, and the structure of [Pt(tbu-iepp)Cl] (1) was determined by X-ray analysis. Complex 1 prepared in CH3CN was revealed to have the C2 atom of the indole ring bound to Pt(II) with the Pt(II)-C2 distance of 1.981(3) ?. On the other hand, [Pt(tbu-miepp)Cl] (2) was concluded to have a phenolate coordination instead of the C2 atom of the indole ring by 1H NMR spectra. Reaction of 1 with 1 equiv. of Ce(IV) in DMF gave the corresponding one-electron oxidized species, which exhibited an ESR signal at g = 2.004 and an absorption peak at 567 nm, indicating the formation of the Pt(II)-indole-π-cation radical species. The half-life, t1/2, of the radical species at -60 °C was calculated to be 43 s (kobs = 1.6 × 10-2 s-1).
