Local 3d Electronic Structures of Co-Au Multinuclear Complexes with Medicinal Molecules Probed by Soft X-ray Absorption Article Swipe

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X-ray absorption spectroscopy Absorption spectroscopy Molecule Ionic bonding Ion Crystallography Chemistry Spectral line Triphenylphosphine Electronic structure Spin states Absorption (acoustics) XANES Materials science Inorganic chemistry Computational chemistry Physics Catalysis Composite material Organic chemistry Astronomy Biochemistry Quantum mechanics

Kohei Yamagami , H. Fujiwara , S. Imada , Toshiharu Kadono , Keisuke Yamanaka , Takayuki Muro , A. Tanaka , Takuma Itai , Nobuto Yoshinari , Takumi Konno , A. Sekiyama ·

YOU? · · 2016 · Open Access · · OA: W2300539886

We have examined local 3d electronic structures of Co-Au multinuclear complexes with medicinal molecules D-penicillaminate (D-pen) [Co{Au(PPh3)(D-pen)}2]ClO4 and [Co3{Au3(tdme)(D-pen)3}2] by means of Co L-edge soft X-ray absorption (XAS) spectroscopy, where PPh3 denotes triphenylphosphine and tdme stands for 1,1,1-tris[(diphenylphosphino)methyl]ethane. The Co L-edge XAS spectra indicates the localized ionic 3d electronic states in both materials. The experimental spectra are well explained by spectral simulation for a localized Co ion under ligand fields with the full multiplet theory, which verifies that the ions are in the low-spin Co3+ state in the former compound and in the high-spin Co2+ state in the latter.