Uranyl Complexes with (Meth)acrylate Anions

Abstract

Two isostructural series with general formulae [R(H 2 O) 6 ][UO 2 (CH 2 CHCOO) 3 ] 2 (R = Mg, Co, or Ni) and [R(H 2 O) 6 ][UO 2 {CH 2 C(CH 3 )COO} 3 ] 2 ·8H 2 O (R = Mg or Zn) have been synthesized and characterized by single-crystal X-ray diffraction and IR spectroscopy. The acrylate and methacrylate series of complexes crystallize in the monoclinic crystal system with the space groups P2 1 /c and P2 1 /n, respectively. The crystal structures of all the studied compounds have similar main structural units, specifically, octahedral aqua complexes [R(H 2 O) 6 ] 2+ and tris(carboxylato) complexes [UO 2 L 3 ] -(L = acryl-[a] Crystal StructuresBoth the acrylate (1-3) and methacrylate (4, 5) series are isostructural. The main structural units in all the studied compounds are the molecular tris(carboxylato)uranylate anionic Eur.

Research progress of SERS on uranyl ions and uranyl compounds: a review

“…Besides, the aforementioned techniques are unable to reveal chemical information on speciation or bonding, hence it is difficult for them to identify the structural information of uranyl compounds. As reported in the studies, many techniques, including FTIR, 9,10 Raman, 11,12 electrospray ionization mass spectrometry, 13,14 and X-ray absorption fine structure spectroscopy (XAFS), 15,16 have been utilized to reveal the chemical information of uranyl compounds. Electrospray ionization mass spectrometry can provide coordination information through dissecting the fragment ion peaks of pyrolysis products, and thus speculating the chemical structures of uranyl compounds.…”