2. EXAFS characterization of initially prepared sample
EXAFS parameters
back-scatterer N
R/Å
R by XRD, precursor/ Å O
4.0 ± 0.3
2.07 ± 0.01
2.055−2.080 Cs
4.3 ± 0.6
2.21 ± 0.01
2.183−2.212 Cl
1.9 ± 0.6
3.03 ± 0.02
2.930−2.980 Al
1.1 ± 0.2
3.08 ± 0.01 −
EXAFS data support IR results, showing supported species is mononuclear and data include RuC contribution that represents one acac ligand on Ru.
Acac ligand provides two oxygen atoms, therefore, EXAFS data show that the supported species is bonded to the zeolite via two RuO bonds
EXAFS data show two ethylene ligands intact and the supported species is bonded to Al site
Ru species bonded to zeolite
via 2 Ru−O bonds—
zeolite is a bidentate ligand
Ogino, I; Gates, B. C. J. Am. Chem. Soc. 2008, 130, 13338 2