[1E01-03] Actinide Chemistry

[1E01] Development of Advanced Adsorbent for Uranium Recovery from Seawater Based on Uranyl Coordination Chemistry

(1)Molecular Design of Planar Pentadentate Ligand and Synthesis of Its Uranyl Complex

*Koichiro Takao¹, Masashi Kaneko², Satoru Tsushima^3,1 (1. Tokyo Tech, 2. JAEA, 3. HZDR)

Keywords:Coordination chemistry, Uranium recovery from seawater, Molecular design, Crystal structure determination

Uranyl ion exceptionally prefers planar pentacoordination in its equatorial plane, which is rarely found in other metal ions. Based on such a uniqueness of uranyl coordination chemistry, we designed fundamental molecular structure of a planar pentadentate ligand, and prepared its uranyl complex to start development of advanced adsorbent for uranium recovery from seawater.