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Hydrothermal Syntheses, Crystal Structures, and Luminescent Properties of Three Organic‐Lanthanide Complexes with 3‐Hydroxycinnamic Acid
Author(s) -
Ye LiQing,
Tang ZhiWei,
Wen YiHang
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100105
Subject(s) - lanthanide , chemistry , crystallography , triclinic crystal system , ligand (biochemistry) , luminescence , carboxylate , bridging ligand , trigonal prismatic molecular geometry , crystal structure , stereochemistry , ion , octahedron , materials science , organic chemistry , biochemistry , receptor , optoelectronics
Three new homodinuclear lanthanide(III) complexes [ Ln 2 (L) 6 (2,2′‐bipy) 2 ] [ Ln = Tb III ( 1 ), Sm III ( 2 ), Eu III ( 3 ); HL = 3‐hydroxycinnamic acid (3‐HCA); 2,2′‐bipy = 2,2′‐bipyridine] were synthesized and characterized by IR spectroscopy, elemental analyses, and X‐ray diffraction techniques. Complexes 1 – 3 crystallize in triclinic system, space group P $\bar{1}$ . In all complexes the lanthanide ions are nine‐coordinate by two nitrogen atoms from the 2,2′‐bipy ligand and seven oxygen atoms from one chelating L ligands and four bridging L ligands, forming distorted tricapped trigonal prismatic arrangements. The lanthanide(III) ions are intramolecularly bridged by eight carboxylate oxygen atoms forming dimeric complexes with Ln ··· Ln distances of 3.92747(15), 3.9664(6), and 3.9415(4) Å for complexes 1 – 3 , respectively. The luminescent properties in the solid state of HL ligand and Eu III complex are also discussed.