Abstract
New hybrid organic–inorganic uranyl selenate, [K(C12H24O6)(H2O)][(UO2)(SeO4)(NO3)] (I), has been prepared by a room-temperature evaporation from the aqueous solutions of uranyl nitrate, selenic acid, potassium nitrate and 18-crown-6 ether. The crystal structure of I [monoclinic, P21/c, a=7.2404(2), b=21.2024(7), c=15.7322(5)Å, β=91.5810(10)°, V=2414.19(13)Å3, Z=4, R1=0.023] is based upon the [(UO2)(SeO4)(NO3)]− one-dimensional uranyl nitrate–selenate chains consisting of UO7 pentagonal bipyramids, SeO4 tetrahedra and nitrate groups. The chains are linked to the [K@(18-crown-6)(H2O)]+ complexes via the K+O bonds to form a “multi-axis transporter” {[K@(18-crown-6)(H2O)][(UO2)(SeO4)(NO3)]} bands that are linked together via weak hydrogen bonds only. The infrared spectroscopy data support the structural data.
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