Uranyl Complexes with (Meth)acrylate Anions. Issue 1 (18th November 2015)

• Record Type: Journal Article
• Authors: Klepov, Vladislav V.; Serezhkina, Larisa B.; Pushkin, Denis V.; Alekseev, Evgeny V.; Grigor'ev, Mikhail S.; Sergeeva, Olga A.; Shimin, Nikita A.; Serezhkin, Victor N.
• Is Part Of: European journal of inorganic chemistry. Issue 1(2016)
• Page Start: 118
• Page End: 125
• Publication Date: 2015-11-18
• Subjects: Uranium -- Noncovalent interactions -- Hydrogen bonds -- Pi interactions; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201501035
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Two isostructural series with general formulae [R(H2 O)6 ][UO2 (CH2 CHCOO)3 ]2 (R = Mg, Co, or Ni) and [R(H2 O)6 ][UO2 {CH2 C(CH3 )COO}3 ]2 · 8H2 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 P 21 / c and P 21 / n, respectively. The crystal structures of all the studied compounds have similar main structural units, specifically, octahedral aqua complexes [R(H2 O)6 ] 2+ and tris(carboxylato) complexes [UO2 L3 ] – (L = acrylate or methacrylate anion). Despite this, there are significant structural differences between the two series that lead to the inclusion of outer‐sphere water molecules in the structures of the methacrylate series. The intermolecular interactions in the acrylate series were studied by the method of molecular Voronoi–Dirichlet polyhedra and compared with those in previously studied acetate compounds. The structures of the methacrylate series of complexes demonstrate an important role of π··· π interactions in the molecular packing of the complexes. Abstract : The intermolecular interactions in the crystal structures of uranyl acrylates have been analyzed by using the method of molecular Voronoi–Dirichlet polyhedra. The analysis revealed an important role of hydrogen bonds and π··· π interactions in the supramolecular organization of the structures.