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Title: Coordination modes of pyridine-carboxylic acid derivatives in samarium (III) complexes
Author: Soares-Santos, Paula C. R.
Paz, Filipe A. Almeida
Ferreira, Rute A. Sa
Klinowski, Jacek
Carlos, Luis D.
Trindade, Tito
Nogueira, Helena I. S.
Keywords: Lanthanide complexes
N,O ligands
Coordination modes
Crystal structures
Issue Date: Aug-2006
Publisher: Elsevier
Abstract: Samarium (III) complexes of picolinic acid (Hpic), 3-hydroxypicolinic acid (HpicOH) and 2-hydroxynicotinic acid (H2nicO) were prepared and characterised. The crystal structures of the samarium complexes K2[Sm2(pic)6(l-pic)2] Æ 7.5H2O (1), [Sm(picOH)2- (l-HpicO)(H2O)] Æ 3H2O (2) and [Sm(HnicO)2(l-HnicO)(H2O)] Æ 5H2O (3) were determined by single-crystal X-ray diffraction studies. The coordination modes of the pyridine-carboxylic acids to Sm3+ centres have been investigated. These complexes showed roomtemperature photoluminescence.
Peer review: yes
DOI: 10.1016/j.poly.2006.03.002
ISSN: 0277-5387
Appears in Collections:DQ - Artigos

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