Abstract
AbstractThe Ru LII absorption‐edge spectra of Ru(NH3)6Cl3, K3RuCl6, and RuCl3 · nH2O and the Rh LII absorption‐edge spectra of (NH4)3RhCl6 and RhCl3 · 3 H2O are measured together with the Rh LIII absorption‐edge spectrum from RhCl3 · 3 H2O, using a 50 cm bent crystal vacuum spectrograph. The RuCl3 · nH2O spectrum exhibits a double‐peaked LII‐edge structure, while the other spectra are characterized by an intense „white line”︁ at the LII or LIII edge. The Ru LII and Rh LII,III absorption‐edge structures are discussed by referring to atomic transition energies in Ru3+, Ru4+, and Rh3+ ions calculated on the basis of a self‐consistent‐field (SCF) method. From these calculated results, it is shown that the double‐peaked LII‐edge structure can be attributed to the 2p1/2 → 4d transitions in the Ru3+ and Ru4+ ions.
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