Open AccessResonant X‐ray emission spectra of K 2 Ni(CN) 4 .H 2 O at the Ni K ‐edge
Author(s) -
Takata Y.,
Iwazumi T.,
Kosugi N.
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500015570
Subject(s) - nickel , k edge , spectral line , atomic physics , emission spectrum , photon energy , metal , resonance (particle physics) , atomic orbital , scattering , materials science , chemistry , molecular physics , photon , physics , electron , optics , quantum mechanics , astronomy , metallurgy
Resonant X‐ray emission spectra were measured at the Ni K‐edge for a planar low‐spin nickel complex K 2 Ni(CN) 4 .H 2 O. In the Ni K β emission spectra, a resonant X‐ray Raman scattering was observed in the pre‐edge region, showing linear energy dispersion of the emitted photon with the incident photon energy. No energy loss features corresponding to the ligand‐to‐metal charge‐transfer (LMCT) was identified. The LMCT feature is characteristic of strongly correlated systems such as NiO; therefore, the LMCT effect proves to be significantly suppressed. This is consistent considering strong covalent character between low‐lying π* ligand and metal 3d (occupied) orbitals in low‐spin nickel complexes.