Extraction and Coordination Properties of 2,3-Bis(diphenylphosphinyl)buta-1,3-diene and 3,4-Bis(diphenylphosphinyl)-2,5-dimethylhexa-2,4-diene

摘要

The extraction properties of 2,3-bis(diphenylphosphinyl)buta-1,3-diene (L-1) and 3,4-bis(diphenylphosphinyl)-2,5-dimethylhexa-2,4-diene (L-2) with respect to f elements are studied for the extraction of microquantities of U(VI) and Th(IV) from HNO3 solutions with solutions of the extracting agents in 1,2-dichloroethane. The introduction of methyl groups into the 1,3-butadiene carbon skeleton of bis(phosphine oxide) increases the efficiency of U(VI) extraction. The coordination properties of bis(phosphine oxides) L-1 and L-2 are studied for the complexes with uranyl nitrate. The crystal structures of bis(phosphine oxide) L-1 center dot THF (CIF file CCDC no. 2107403) and its complexes with uranyl nitrate I and II (CIF files CCDC nos. 2107404 and 2107405, respectively) are confirmed by X-ray diffraction data.