Abstract

Synthesis, IR spectral study and X-ray diffraction analysis of single crystals of Na[(UO2)(C3H7COO)3] · 0.25H2O (I) and K[(UO2)(C3H7COO)3] (II) were carried out. Compound I is monoclinic, unit cell parameters are: a = 13.5671(15) A, b = 20.070(2) A, c = 13.6139(15) A, β = 106.839(2)°, space group P21, Z = 8, R = 0.0493. Compound II is orthorhombic, unit cell parameters are: a = 17.1325(9) A, b = 19.6966(11) A, c = 21.9686(11) A, space group P212121, Z = 16, R = 0.0563. Mononuclear groups [UO2(C3H7COO)3]− related to the A301 crystal-chemical group (A = UO22+, B01 = C3H7COO−) of uranyl complexes are the uranium-containing structural units of crystals I and II. The data of IR spectral study agree well with X-ray diffraction data.

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