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Inorg Chem. 2002 Apr 08;41(7):1692-4. doi: 10.1021/ic015619w.

Precipitation of a dioxouranium(VI) species from a room temperature ionic liquid medium.

Inorganic chemistry

Antonia E Bradley, Justine E Hatter, Mark Nieuwenhuyzen, William R Pitner, Kenneth R Seddon, Robert C Thied

Affiliations

  1. School of Chemistry and The Quill Research Centre, The Queen's University of Belfast, Stranmillis Road, Belfast BT9 5AG, Northern Ireland.

PMID: 11925156 DOI: 10.1021/ic015619w

Abstract

The novel complex 1-butyl-3-methylimidazolium mu(4)-(O,O,O',O'-ethane-1,2-dioato)-bis[bis(nitrato-O,O)dioxouranate(VI)] (1) has been precipitated from a room-temperature ionic liquid medium containing 1-butyl-3-methylimidazolium nitrate, nitric acid, and acetone. X-ray analysis of complex 1 shows the unit cell contains four [C(4)mim](+) cations and two independent [[UO(2))(NO(3))(2)](2)(mu(4)-C(2)O(4))](2-) moieties, both of which are located about inversion centers. The [C(4)mim](+) cations are arranged such that they produce large channels in which the anions are located. This arrangement of [[(UO(2))(NO(3))(2)](2)(mu(4)-C(2)O(4))](2-) groups is unique to this compound. Crystal data for compound 1: M = 1154.56, monoclinic, space group P2(1)/c, a = 15.452(2) A, b = 20.354(3) A, c = 10.822(4) A, beta = 106.84(2) degrees, U = 3258(1) A(-)(3), Z = 4, mu = 10.023 mm(-1), R(int) = 0.0788.

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