Journal article
A series of Ln-p-chlorobenzoic acid–terpyridine complexes: lanthanide contraction effects, supramolecular interactions and luminescent behavior
CrystEngComm, Vol.16(10), pp.1873-1884
2014
DOI: 10.1039/c3ce42267d
Abstract
Fifteen new lanthanide p-chlorobenzoic acid complexes, [PrL3(terpy)(H2O)]2 (1), [LnL3(terpy)(H2O)]2 (Ln = Nd (2), Sm (3), and Eu (4)), and [LnL3(terpy)(H2O)] (Ln = Sm (3′), Eu (4′), Gd (5), Tb (6), Dy (7), Ho (8), Er (9), Tm (10), Yb (11), Lu (12), and Y (13); HL: p-chlorobenzoic acid; terpy: 2,2′:6′,2′′-terpyridine), have been synthesized hydrothermally at varying temperatures and structurally characterized by single crystal and powder X-ray diffraction. The series is comprised of binuclear molecular units (Pr–Eu) that give way to mononuclear molecular complexes (Sm–Y) as the lanthanide contraction takes effect. All fifteen complexes feature a tridentate terpyridine ligand, p-chlorobenzoic acid ligands exhibiting multiple binding modes, bidentate, bridging bidentate, and monodentate, and a bound water molecule. Binuclear complexes 1–4 are stitched together via intermolecular interactions: aromatic–aromatic interactions for 1, halogen⋯halogen interactions for 2–4, to form 1D chains. Mononuclear complexes 3′, 4′, and 5–13 utilize supramolecular hydrogen and halogen bonding to form 2D sheets. Visible and near-IR solid state luminescence studies were performed on complexes 2, 3, 3′, 4, 4′, 6, 7 and 11 and the characteristic visible luminescence of Sm(III), Eu(III), Tb(III), and Dy(III) was exhibited. The near-IR spectra of the Nd(III) and Yb(III) complexes exhibit weak characteristic luminescence, showing that terpy can act as a sensitizing chromophore in these systems.
Details
- Title: Subtitle
- A series of Ln-p-chlorobenzoic acid–terpyridine complexes: lanthanide contraction effects, supramolecular interactions and luminescent behavior
- Creators
- Korey P CarterSimon J. A PopeChristopher L Cahill
- Resource Type
- Journal article
- Publication Details
- CrystEngComm, Vol.16(10), pp.1873-1884
- DOI
- 10.1039/c3ce42267d
- ISSN
- 1466-8033
- eISSN
- 1466-8033
- Language
- English
- Date published
- 2014
- Academic Unit
- Chemistry
- Record Identifier
- 9984216604502771
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