title: Poly[(μ(2)-2-hydr-oxy-2-methyl-propionato-κO,O:O)(μ(2)-2-hydr-oxy-2-methyl-propionato-κO:κO)dioxido-uranium(VI)].
abstract: In the title compound, [UO(2)(C(4)H(7)O(3))(2)](n), the dioxouranium(VI) units are linked by 2-hydr-oxy-2-methyl-propionate ligands into a honeycomb structure. The U atom is seven-coordinate in a penta-gonal-bipyramidal geometry. The uncoordinated hydr-oxy groups of the 2-hydr-oxy-2-methyl-propionate ions inter-act with the O atom of the uranyl and with the coordinated hydr-oxy group of an adjacent 2-hydr-oxy-2-methyl-propionate ion through O-H⋯O hydrogen bonds.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Yoshimura
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Kikunaga
authors.forename: Atsushi
authors.initials: A
authors.lastname: Shinohara