In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2016, No. 9 ( 2016-03), p. 1333-1339
Abstract:
A series of hexahalocerate(III) salts with the general formula [cation] 3 [CeHal 6 ] have been prepared by dissolving anhydrous cerium trihalides in imidazolium halide ionic liquids. Complexes with different anions, [CeCl 6 ] 3– , [CeBr 6 ] 3– and [CeBr 3 Cl 3 ] 3– , were synthesized and their cationic alkyl chains were varied. To confirm the structures of the prepared salts, X‐ray crystallography was used to characterize [BMIM] 3 [CeCl 6 ]. Two different crystal structures were found: [BMIM] 3 [CeCl 6 ] and the linear coordination polymer [BMIM] x [Ce(µ‐Cl) 2 Cl 2 (EtOH) 2 ] x containing coordinated solvent. All the synthesized compounds were characterized by DSC and TGA. The influence of the cationic and anionic structures on the melting points and decomposition temperatures is discussed. Furthermore, the Ce‐containing salts [BMIM] 3 [CeHal 6 ] show interesting photoluminescence properties: intense Ce 3+ ‐based 5d–4f‐centred emission from the soft UV‐B region to the border of visible light is observed that is driven both by direct excitation of Ce 3+ as well as by a sensitizer effect of the [BMIM] + cation.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2016.9
DOI:
10.1002/ejic.201501454
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
1475009-0
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