Structure of glutarate-containing uranyl coordination polymers with organic amides

Abstract

Three new uranyl complexes [UO2(C5H6O4)(Meur)] (I), [UO2(C5H6O4)(Aa)] (II), and [(UO2)2(C5H6O4)2(Tmur)2(H2O)] • H2O (III), where C5H6O4 2− is glutarate anion, Meur is methylcarmamide, Aa is acetamide, and Tmur is tetramethylcarbamide, have been synthesized and characterized by X-ray diffraction. 1D uranyl-glutarate complexes have been found in the structures of all compounds; in I and II their composition is [UO2(C5H6O4)(L)] and crystallographic formula is AQ21M1 (where A = UO2 2+, Q21 = C5H6O4 2-, and M1 = L = Meur or Aa). In crystals III, chain complexes have the composition [(UO2)2(C5H6O4)2(Tmur)2(H2O)] and crystallographic formula A2Q2 02M3 1 (where A = UO2 2+, Q02 = C5H4O6 2-, and M1 = Tmur or H2O). All compounds were characterized by IR spectroscopy. Structural features of all known complexes of uranyl glutarate with neutral ligands have been discussed.