Electrochemical Properties of Bis(dicarbollide)uranium Dibromide

Francis M. de Rege; Wayne H. Smith; Brian L. Scott; Jon B. Nielsen; Kent D. Abney

doi:10.1021/ic9712838

Electrochemical Properties of Bis(dicarbollide)uranium Dibromide

Inorg Chem. 1998 Jul 27;37(15):3664-3666. doi: 10.1021/ic9712838.

Authors

Francis M. de Rege¹, Wayne H. Smith, Brian L. Scott, Jon B. Nielsen, Kent D. Abney

Affiliation

¹ Chemical Science and Technology Division, Los Alamos National Laboratory, CST-11, Mail Stop J514 Los Alamos, New Mexico 87545.

PMID: 11670463
DOI: 10.1021/ic9712838

Abstract

The cyclic voltammogram of [(eta(5)-C(2)B(9)H(11))(2)UBr(2)].2[Li(THF(4))] shows the electrochemical generation of a uranium(III) species. Subsequent Na/Hg reduction of [(eta(5)-C(2)B(9)H(11))(2)UBr(2)].2[Li(THF(4))] leads to the new isolable uranium(III) species [(eta(5)-C(2)B(9)H(11))(2)UBr(THF)].2[Li(THF)(x)()] (x = 2-4). The green uranium(III) complex was characterized by NMR and elemental analysis and its structure determined by single-crystal X-ray crystallography. The coordination geometry around the dinegative uranium(III) moiety is pseudotetrahedral with two dicarbollide ligands, a bromide ligand, and a THF ligand. The electrochemical properties of the dicarbollide complex are discussed and compared to similar cyclopentadienyluranium complexes.