X-Ray Co K Edges of [Co(CN)_6]^3-, [Co(NO_2)_6]^3- and [Co(NCS)_4]^2- Complex Ions

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概要

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• The X-Pay Co K absorption edge structures of octahedrally coordinated [Co(CN)_6]^3- and [Co(NO_2)_6]^3-, and tetrahedrally coordinated [Co(NCS)_4]^2- are accurately measured with a high-resolution two-crystal spectrometer. These three complex ions each have peculiarly lowenergy absorption in the main absorption edges contrary to Mitchell-Beeman's idea based on Pauling's hybridization theory. The molecular orbital theory provides a qualitative interpretation suitable for these low energy absorptions.In [Co(CN)_6]^3- and [Co(NO_2)_6]^3- low energy absorption may be principally attributed to the transition of the Co Is electron into the 4t_lu antibonding orbital constructed mainly from the antibonding π orbitals of ligands. In [Co(NCS)_4]^2- it may be ascribed to Co Is -2a_1 transition.

• 社団法人応用物理学会の論文
• 1977-01-05

著者

• Obashi Masayoshi

  Department Of Physics College Of General Education Osaka University

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