Influence of metal–ligand ratio on benzimidazole based luminescent lanthanide complexes: 3-D network structures and chloride anion binding

Autor:	Richard A. Jones, Michael Wiester, Xiaoping Yang, Rachel P. J. Lai, Michael M. Oye
Rok vydání:	2011
Předmět:	Lanthanide Benzimidazole Ligand Stereochemistry General Chemistry Medicinal chemistry Catalysis Metal chemistry.chemical_compound chemistry visual_art Materials Chemistry visual_art.visual_art_medium Anion binding Luminescence Single crystal Stoichiometry
Zdroj:	New J. Chem.. 35:310-318
ISSN:	1369-9261 1144-0546
DOI:	10.1039/c0nj00518e
Popis:	Reaction of LnCl3·6H2O with the benzimidazole based ligand 2-(1H-benzoimidazol-2-yl)-4-bromo-6-methoxy-phenol (HL) in EtOH or MeOH under reflux gave dinuclear complexes of formula [Ln2(HL)2Cl6(solv)4] (solv = EtOH or MeOH) with a ligand : metal ratio = 1 : 1 (Ln = Tb(1); Er(2); Gd(3); Yb(4)). A ligand : metal ratio of 2 : 1 under similar conditions gave the mononuclear complexes [Eu(HL)2Cl3(MeOH)] (5) and [Ln(HL)2(H2O)4]·3Cl (Ln = Er(6); Yb(7)). A ligand : metal stoichiometry of 4 : 1 gave complexes [Ln(HL)4H2O]·3Cl (Ln = Nd(8); Gd (9); Eu(10)). The compounds have been structurally characterized by single crystal X-ray diffraction studies and their photophysical properties investigated.
Databáze:	OpenAIRE
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