In:
Zeitschrift für anorganische und allgemeine Chemie, Wiley, Vol. 645, No. 16 ( 2019-08-30), p. 1043-1051
Abstract:
trans ‐[ Ln (NO 3 ) 2 (Ph 3 AsO) 4 ](NO 3 ) 2 ( 1 ) and mer ‐[ Ln (NO 3 ) 3 (Ph 3 AsO) 3 ] ( 2 ) complexes were prepared from Ln (NO 3 ) 3 · x H 2 O and Ph 3 AsO in chloroform ( Ln = Y, Sm, Eu, Tb, and Dy). Production of complexes 1 vs. 2 and solvent content was found to be highly dependent on crystallization solvent choice. Tb and Eu produced only 1 , while the other Ln metals produced both 1 and 2 . Solvent‐free, acetone‐, and methanol‐containing polymorph series were identified for complexes 1 . Acetone/ether‐ and CH 2 Cl 2 ‐containing polymorph series were identified for complexes 2 . Luminescence measurements were performed on solvent‐free 1 ( Ln = Y, Eu, Tb, and Dy) and 2 ( Ln = Sm) at 78 K. Sensitized lanthanide emission bands via resonance energy transfer were observed in all cases, except the control ( Ln = Y). The efficiency of this energy transfer process varies amongst the lanthanide metals studied and was rationalized using Latva's empirical rule and Density Functional Theory calculations.
Type of Medium:
Online Resource
ISSN:
0044-2313
,
1521-3749
DOI:
10.1002/zaac.v645.16
DOI:
10.1002/zaac.201900137
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
201094-X
detail.hit.zdb_id:
1481139-X
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