Effects of Large Halides on the Structures of Lanthanide(III) and Plutonium(III) Borates
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https://figshare.com/articles/dataset/Effects_of_Large_Halides_on_the_Structures_of_Lanthanide_III_and_Plutonium_III_Borates/2505277
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资源简介:
Reactions of LnBr3 or LnOI with molten boric
acid result
in formation of Ln[B5O8(OH)(H2O)2Br] (Ln = La–Pr), Nd4[B18O25(OH)13Br3], or Ln[B5O8(OH)(H2O)2I] (Ln = La–Nd). Reaction
of PuOI with molten boric acid yields Pu[B7O11(OH)(H2O)2I]. The Ln(III) and Pu(III) centers
in these compounds are found as nine-coordinate hula-hoop or 10-coordinate
capped triangular cupola geometries where there are six approximately
coplanar oxygen donors provided by triangular holes in the polyborate
sheets. The borate sheets are connected into three-dimensional networks
by additional BO3 triangles and/or BO4 tetrahedra
that are roughly perpendicular to the layers. The room-temperature
absorption spectrum of single crystals of Pu[B7O11(OH)(H2O)2I] shows characteristic f–f
transitions for Pu(III) that are essentially indistinguishable from
Pu(III) in other compounds with alternative ligands and different
coordination environments.
创建时间:
2012-07-16



