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Issue 2, 2011
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Influence of metal–ligand ratio on benzimidazole based luminescent lanthanide complexes: 3-D network structures and chloride anion binding

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Abstract

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.

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

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Publication details

The article was received on 02 Jul 2010, accepted on 17 Oct 2010 and first published on 05 Nov 2010


Article type: Paper
DOI: 10.1039/C0NJ00518E
Citation: New J. Chem., 2011,35, 310-318
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    Influence of metal–ligand ratio on benzimidazole based luminescent lanthanide complexes: 3-D network structures and chloride anion binding

    X. Yang, R. A. Jones, M. M. Oye, M. Wiester and R. J. Lai, New J. Chem., 2011, 35, 310
    DOI: 10.1039/C0NJ00518E

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