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Abstract:
Two organically templated uranium phosphites, (C4H12N)(UO2)(HPO3)(NO3) (M-r = 486.16) 1 and (C16H36N)(2)(UO2)(2)(H2PO3)(2)(HPO3)(NO3)(2) (M-r = 1390.95) 2, were prepared by evaporation from aqueous solution of uranyl nitrate, phosphite acid and their respective organic ammonium hydroxids. Their structures were determined by single-crystal X-ray diffraction and further characterized by infrared and fluorescence spectroscopy. In 1, pentagonal [UO7] bipyramids share corners with three [HPO3](2-) tetrahedra and one edge with a [NO3](-) anion to form [(UO2)(HPO3)(NO3)](-) ladder-like chains parallel to the b axis. The structure of 2 is also based upon one-dimensional anionic [(UO2)(2)(H2PO3)(2)(HPO3)(NO3)(2)](2-) chains of corner-sharing penta- gonal [UO7] bipyramids with [H2PO3](-) and [HPO3] tetrahedra, which is still unknown in structural chemistry of uranium so far. Crystal data for 1: monoclinic, space group C2/m, a = 21.808(7), b = 6.9605(15), c = 8.357(2) angstrom, beta = 98.327(15)degrees, V = 1255.2(6) angstrom(3), Z = 4, D-c = 2.573 g/cm(3), F(000) = 888, mu = 13.086 mm(-1), the final R = 0.0418 and wR = 0.0906 (I > 2 sigma(I)); and those for 2: monoclinic, space group C2/c, a = 36.4549(8), b = 14.5296(11), c = 20.8253(11) angstrom, beta = 101.7440(8)degrees, V = 10799.7(10) angstrom(3), Z = 8, D-c = 1.711 g/cm(3), F(000) = 5424, mu = 6.144 mm(-1), the final R = 0.0368 and wR = 0.0865 (I > 2 sigma(I)).
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CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
ISSN: 0254-5861
CN: 35-1112/TQ
Year: 2006
Issue: 11
Volume: 25
Page: 1380-1386
0 . 7 2 9
JCR@2006
5 . 9 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
JCR Journal Grade:4
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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