English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/51129
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Variable behaviour of flexible N,O-mixed pyrazole ligand towards Zn(ii), Cd(ii) and Hg(ii) ions. Synthesis, crystal structure and fluorescent properties

AuthorsGuerrero, Miguel; Pons, Josefina; Ros, Josep; Font-Bardia, Mercè; Rius, Jordi ; Merkoçi, Arben
Issue Date2011
PublisherRoyal Society of Chemistry (UK)
CitationCrystEngComm 13: 6457-6470 (2011)
AbstractThe variable coordination behaviour of the mixed ligand 1-(2-hydroxyethyl)-3,5-dimethylpyrazole (L) towards Zn(ii), Cd(ii) and Hg(ii) ions has been investigated. Three new complexes, [ZnCl2(L)] (1), [CdCl2(L)]2 (2), and [HgCl2(L)]n (3), with different structures and topologies have been fully characterized by analytical and spectroscopic techniques including heteronuclear 113Cd and 199Hg NMR analyses. Complexes 1-3 were also characterized by single crystal and powder X-ray diffraction techniques. The L ligand exhibits high versatility and provides different environments to the metal centre as a function of its diverse coordination mode. The weak π-π stacking interactions and intermolecular hydrogen bonds resulted in the two-dimensional network structures. All these results point out the structural diversity of the hybrid pyrazole ligand on its coordination. Finally, we determined the fluorescent properties of complexes 1-3. Surprisingly, L displays a high selectivity for Hg(ii) ion. The findings indicate that the variable behaviour of the hydroxyl group substituent exerts an important effect on the spectroscopic properties. Moreover, the fluorescence of these complexes has been rationalized through theoretical calculations. The primary results suggest that the use of L is a promising strategy to synthesize novel materials with unique photoluminescent properties and further applications for the detection of heavy metals in real environmental samples. © 2011 The Royal Society of Chemistry.
URIhttp://hdl.handle.net/10261/51129
DOI10.1039/c1ce05626c
Identifiersdoi: 10.1039/c1ce05626c
issn: 1466-8033
Appears in Collections:(ICMAB) Artículos
(CIN2) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.