Title

Single crystal growth and structural characterization of ternary transition-metal uranium oxides: MnUO4, FeUO4, and NiU2O6

Document Type

Paper

Subject Area(s)

Chemistry

Abstract

Single crystals of MnUO4, FeUO4, and NiU2O6 were grown for the first time. The use of chloride fluxes facilitated the crystal growth. MnUO4, a hexavalent uranium compound, crystallizes in the orthorhombic space group, Imma, with a = 6.6421(19) Å, b = 6.978(2) Å, and c = 6.748(2) Å, and exhibits typical uranyl, UO22+, coordination. FeUO4 and NiU2O6 contain pentavalent uranium and are structurally related, exhibiting three-dimensional connectivity. FeUO4crystallizes in the orthorhombic space group, Pbcn, with a = 4.8844(2) Å, b = 11.9328(5) Å, c = 5.1070(2) Å. NiU2O6 crystallizes in the trigonal space group, P321, with a = 9.0148(3) Å, c = 5.0144(3) Å.

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