Synthesis, characterization and thermal decomposition of dioxouranium(VI) complexes with N-1,N-4-diarylidene-S-propyl-thiosemicarbazone: Crystal structure of [UO2(L-I)(C4H9OH)]


Sahin M., Bal-Demirci T., Pozan-Soylu G., Uelkueseven B.

INORGANICA CHIMICA ACTA, vol.362, no.7, pp.2407-2412, 2009 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 362 Issue: 7
  • Publication Date: 2009
  • Doi Number: 10.1016/j.ica.2008.10.036
  • Journal Name: INORGANICA CHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.2407-2412

Abstract

Reactions of salicyl- and 3,5-dichlorosalicylaldehyde-S-propyl-thiosemicarbazones with salicyl- and 3,5-dichlorosalicylaldehyde in the presence of UO2(CH3COO)(2) in different alcohols yielded stable solid complexes corresponding to the general formula [UO2(L)ROH] (R: propyl-, butyl-, pentyl-, and octyl-). The complexes were characterized by means of elemental analysis, IR and H-1 NMR spectroscopies. The thermal stabilities of the alcohol solvated complexes were investigated in air and nitrogen atm., and determined their decomposition phases. In the crystal structure of the [UO2(L)(C4H9OH)], the U(VI) centre is seven-coordinated in a distorted pentagonal bipyramidal geometry involving O,O,N,N atoms of two phenolic and two imine groups and one oxygen atom of alcohol molecule in basal plane and two O atoms of dioxo group in apical positions. The title structure is stabilized by one intramolecular interaction of types C-H center dot center dot center dot Cl and by two intermolecular interactions of types O-H center dot center dot center dot O and C-H center dot center dot center dot pi (benzene) leading to the molecular chain along the [010] direction. (C) 2008 Elsevier B. V. All rights reserved.