Applications of lanthanide luminescence spectroscopy to solution studies of coordination chemistry

Choppin, Gregory R.; Peterman, Dean R.

doi:10.1016/s0010-8545(98)00125-8

Cited by 370 publications

(203 citation statements)

References 54 publications

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“…The difference between the Raman spectra of CeCl 3 and LiCl aqueous solutions, having the equal Cl -concentration of 6.35 M, in the case of CeCl 3 solution demonstrates the intensity deficiency in the spectral area belonging to anion-water (H 2 O n )Cl -complexes (ν ~ 3465 cm -1 ) and the intensity excess in To interpret these spectral data we should attract the results obtained by various methods on the coordination of trivalent lanthanide ions (Ln 3+ ) in solutions [2,3,10,11].…”

Section: Discussionmentioning

confidence: 99%

“…Despite the fact that the influence of inorganic as well as organic solutes on the liquid water structure has been intensively investigated by various methods, including X-ray, NMR and IR/Raman spectroscopy, some aspects of the phenomenon still remain uncertain [1][2][3][4][5][6][7][8]. In this connection studying the Raman spectra of aqueous solutions is considered to be rather informative owing to high sensitivity of the O-H stretching band (ν~2800-3800 cm -1 ) to the local environment of water molecules.…”

Section: Introductionmentioning

confidence: 99%

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Raman spectroscopic study of trivalent lanthanides in concentrated aqueous solutions

Цвирко

Svetashev

2011

J. Phys.: Conf. Ser.

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Absrtact.The Raman spectra in the region of the O-H stretching vibration band are used to investigate the effect of lanthanide (III) ions on liquid water structure in concentrated aqueous solutions of CeCl 3 and GdCl 3 (C~0.5‚3 M). The differential spectra, derived from the consequent Raman spectra, have reflected the substantial discrepancy between the spectra of lanthanide (III) salt solutions and pure water as well as the spectra of standard LiCl (C~1.5‚9M) solutions. The new sharp bands (ν max ~ 3180‚3190 cm -1 ) and (ν max~3 360 cm -1 ), observed in the differential spectra, are assumed to two types of aqua-ions: Ln 3+

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Raman spectroscopic study of trivalent lanthanides in concentrated aqueous solutions

Цвирко

Svetashev

2011

J. Phys.: Conf. Ser.

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“…15 The eight-fold MoO 4 2− -coordination must be inducing a strong splitting of Eu 3+ 's crystal field levels. 26,42 The emission spectra of the species allow additional insight into the local coordination of the trivalent ions in the solid solution. Emission spectra are shown in The powder spectra do not allow an unambiguous point symmetry determination, but the observed splitting pattern seems to be in disagreement with both, D 2d and S 4 point symmetry, for the Ca 2+ site in powellite.…”

Section: Trlfs Of Powder Sample Solid Solution Seriesmentioning

confidence: 99%

Characterization of powellite-based solid solutions by site-selective time resolved laser fluorescence spectroscopy

et al. 2013

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We present a comprehensive study of the solid solution system Ca 2 (MoO 4 ) 2 -NaGd(MoO 4 ) 2 on the molecular scale, by means of site-selective time resolved laser fluorescence spectroscopy (TRLFS). Eu 3+ is used as a trace fluorescent probe, homogeneously substituting for Gd 3+ in the solid solution crystal structure. Site-selective TRLFS of a series of polycrystalline samples covering the whole composition range of the solid solution series from 10% substitution of Ca 2+ to the NaGd end-member reveals it to be homogeneous throughout the whole range. The trivalent ions are incorporated into the powellite structure in only one coordination environment, which exhibits a very strong ligand-metal interaction. Polarizationdependent measurements of a single crystal of NaGd(Eu)(MoO 4 ) 2 identify the coordination geometry to be of C 2v point symmetry. The S 4 symmetry of the Ca site within the powellite lattice can be transformed into C 2v assuming minor motion in the first coordination sphere.

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“…We note, however, that 1.6 ms is a rather long lifetime [cf. 2.10 ms for Eu(ClO 4 ) in anhydrous acetonitrile] [16] and since the RTIL medium is not dielectrically too different from an organic solvent, the associated species probably contains, on average, less than one water molecule. The subsequent transformation of the decay into a single exponential curve, with a concomitant decrease in lifetime after few days of storage reflects a rehydration of the Eu III ion, although not completely, since both the lifetime and the R 612/589 ratio remain substantially larger than in the non-degassed solution.…”

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confidence: 99%

Eu^III Luminescence in a Hygroscopic Ionic Liquid: Effect of Water and Evidence for a Complexation Process

Billard¹,

Mekki²,

Gaillard³

et al. 2004

Eur J Inorg Chem

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The spectroscopic characteristics (excitation, emission and lifetime) of EuIII dissolved in 1‐methyl‐3‐butylimidazolium bis(trifluoromethanesulfon)imide (BumimTf2N) are reported. In a first series of experiments, the effect of the presence of water in BumimTf2N was examined. It appears that non‐degassed solutions are most probably inhomogeneous, displaying large water clusters leading to an intense diffusion of the red light of an He:Ne laser. In these samples, the Eu emission spectrum is close to that observed in slightly acidic aqueous solutions. In contrast, when the samples were degassed the solution appeared homogeneous and water can be considered as a competitive ligand for the first coordination sphere of Eu. In a subsequent series of experiments, tetrabutylammonium chloride (TBACl) was added to the solution and the resultant species investigated. The ensuing enhancement in the metal‐centered luminescence has been interpreted in terms of changes in the inner coordination sphere of the EuIII ion and possible structures are discussed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)

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Applications of lanthanide luminescence spectroscopy to solution studies of coordination chemistry

Cited by 370 publications

References 54 publications

Raman spectroscopic study of trivalent lanthanides in concentrated aqueous solutions

Raman spectroscopic study of trivalent lanthanides in concentrated aqueous solutions

Characterization of powellite-based solid solutions by site-selective time resolved laser fluorescence spectroscopy

Eu^III Luminescence in a Hygroscopic Ionic Liquid: Effect of Water and Evidence for a Complexation Process

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Applications of lanthanide luminescence spectroscopy to solution studies of coordination chemistry

Cited by 370 publications

References 54 publications

Raman spectroscopic study of trivalent lanthanides in concentrated aqueous solutions

Raman spectroscopic study of trivalent lanthanides in concentrated aqueous solutions

Characterization of powellite-based solid solutions by site-selective time resolved laser fluorescence spectroscopy

EuIII Luminescence in a Hygroscopic Ionic Liquid: Effect of Water and Evidence for a Complexation Process

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Product

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Eu^III Luminescence in a Hygroscopic Ionic Liquid: Effect of Water and Evidence for a Complexation Process