| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1337444 | Polyhedron | 2012 | 7 Pages |
The products with the general formulas VO(Salits) 1, Mn(Salits)Br 2, Fe(Salits)Cl 3 and UO2(Salits)(MeOH) 4 (Salits = N1,N4-bis(salicylidene)-S-allyl-thiosemicarbazide) are prepared by the reaction of salicylaldehyde-S-allyl-thiosemicarbazone (H2L) and salicylaldehyde with VOSO4·3H2O, Mn(CH3COO)2·4H2O, FeCl3·6H2O and UO2(CH3COO)2·2H2O, respectively. Complexes 1–4 were characterized by elemental analysis, spectroscopic (FT-IR and UV–Vis) and TGA techniques. Crystal and molecular structures of the complexes were determined by single crystal X-ray diffraction. The results revealed that the complexes 1, 2 and 3 contain a dideprotonated tetradentate form of Salits coordinated via N2O2 donors along with oxido, bromido or chlorido ligands, respectively, and they have distorted square pyramidal geometries. However, the complex 4 adopts a severely distorted pentagonal bipyramidal geometry consisting of N2O2 coordination of Salits, a methanol ligand and two oxygens of the uranyl moiety. TG analysis showed that complex 3 is more stable than the others.
Graphical abstractThe products with the general formulas VO(Salits) 1, Mn(Salits)Br 2, Fe(Salits)Cl 3 and UO2(Salits)(MeOH) 4 (Salits = N1,N4-disalicyliden-S-allyl-thiosemicarbazone) are prepared and characterized with usual methods. The results show that they have distorted square pyramidal geometries and the complex 4 adopts a severely distorted pentagonal bipyramidal geometry. TG analysis showed that the complex 3 is more stable than the others.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New complexes of S-allyl-N1,N4-bis(salicylidene)thiosemicarbazone are synthesized. ► The compounds are characterized by spectral and X-ray studies. ► The complexes show distorted square pyramidal and pentagonal bipyramid geometries.
