title: Synthesis and structural characterization of molecular Dy(III) and Er(III) tetra-carbonates.
abstract: Single crystal structures of lanthanide carbonate and hydroxy-carbonate compounds have been previously reported in the literature, with the majority of these compounds being extended one- to three-dimensional compounds. Very few lanthanide compounds have been isolated that contain molecular moieties, and none have been reported for either erbium or dysprosium. Single crystals of the tetra-carbonate complexes, [C(NH(2))(3)](5)[Er(CO(3))(4)].11H(2)O (I) and [C(NH(2))(3)](4)[Dy(CO(3))(4)(H(2)O)](H(3)O).13H(2)O (II), were isolated from concentrated guanidinium carbonate solutions and characterized by single crystal X-ray diffraction studies. Compounds I and II are the first reported molecular carbonate structures for Er and Dy to be characterized via single crystal X-ray diffraction studies. Crystallographic data for I: monoclinic, space group P21/n, a = 8.8160(6) A, b = 21.0121(14) A, c = 19.6496(14) A, Z = 4. Data for II: tetragonal, space group P4/n, a = b = 15.3199(11) A, c = 7.5129(11) A, Z = 2.
authors.affiliation: Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. georgeg@lanl.gov
authors.forename: George S
authors.initials: GS
authors.lastname: Goff
authors.forename: Michael R
authors.initials: MR
authors.lastname: Cisneros
authors.forename: Chandra
authors.initials: C
authors.lastname: Kluk
authors.forename: Kevin
authors.initials: K
authors.lastname: Williamson
authors.forename: Brian
authors.initials: B
authors.lastname: Scott
authors.forename: Sean
authors.initials: S
authors.lastname: Reilly
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Runde