Molecular and Crystal Structures of Uranyl Nitrate Coordination Polymers with Double-Headed 2-Pyrrolidone Derivatives

Hiroyuki Kazama; Satoru Tsushima; Yasuhisa Ikeda; Koichiro Takao

doi:10.1021/acs.inorgchem.7b02250

Molecular and Crystal Structures of Uranyl Nitrate Coordination Polymers with Double-Headed 2-Pyrrolidone Derivatives

Inorg Chem. 2017 Nov 6;56(21):13530-13534. doi: 10.1021/acs.inorgchem.7b02250.

Authors

Hiroyuki Kazama¹, Satoru Tsushima^{1

2}, Yasuhisa Ikeda¹, Koichiro Takao¹

Affiliations

¹ Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology , 2-12-1-N1-32 O-okayama, Meguro-ku, Tokyo 152-8550, Japan.
² Institute of Resource Ecology, Helmholtz Zentrum Dresden-Rossendorf , P.O. Box 510119, 01314 Dresden, Germany.

PMID: 29064684
DOI: 10.1021/acs.inorgchem.7b02250

Abstract

Double-headed 2-pyrrolidone derivatives (DHNRPs) were designed and synthesized as bridging ligands for the efficient and selective separation of UO₂²⁺ from a HNO₃ solution by precipitation. The building blocks, UO₂(NO₃)₂ and DHNRPs, were successfully connected to form an infinite 1D coordination polymer. The solubility of [UO₂(NO₃)₂(DHNRP)]_n is no longer correlated to the hydrophobicity of the ligand but is exclusively governed by the ligand symmetry and packing efficiency. The newly designed DHNRP family can be used to establish a new spent nuclear fuel reprocessing scheme.