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Lanthanide Complexes of 2,6‐Dihydroxybenzoic Acid: Synthesis, Crystal Structures and Luminescent Properties of [ n Bu 4 N] 2 [Ln(2,6‐dhb) 5 (H 2 O) 2 ] (Ln = Sm and Tb)
Author(s) -
SoaresSantos Paula C. R.,
Nogueira Helena I. S.,
Almeida Paz Filipe A.,
Sá Ferreira Rute A.,
Carlos Luís D.,
Klinowski Jacek,
Trindade Tito
Publication year - 2003
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300084
Subject(s) - chemistry , denticity , lanthanide , terbium , photoluminescence , crystal structure , ligand (biochemistry) , crystallography , carboxylate , raman spectroscopy , luminescence , single crystal , chelation , infrared spectroscopy , inorganic chemistry , stereochemistry , ion , organic chemistry , biochemistry , physics , receptor , optoelectronics , optics
Lanthanide complexes of 2,6‐dihydroxybenzoic acid (2,6‐Hdhb), namely [ n Bu 4 N] 2 [Ln(2,6‐dhb) 5 (H 2 O) 2 ] [Ln = Sm ( 1 ) and Tb ( 2 )], were synthesized and their crystal structures determined by single‐crystal X‐ray diffraction studies. The 2,6‐dhb − ligand coordinates to the lanthanide cations through the carboxylate group in a monodentate or bidentate chelating coordination mode. The compounds were further characterised using IR, Raman, 1 H and 13 C NMR spectroscopy and elemental analysis. Photoluminescence measurements were performed on both compounds. In particular, the terbium complex 2 shows intense photoluminescence both in the solid state and in ethanolic solution. Compound 2 also exhibits triboluminescence. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)