Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 8387-8393 |
| Seitenumfang | 7 |
| Fachzeitschrift | Dalton Transactions |
| Jahrgang | 42 |
| Ausgabenummer | 23 |
| Publikationsstatus | Veröffentlicht - 4 Apr. 2013 |
Abstract
We present a comprehensive study of the solid solution system Ca 2(MoO4)2-NaGd(MoO4)2 on the molecular scale, by means of site-selective time resolved laser fluorescence spectroscopy (TRLFS). Eu3+ is used as a trace fluorescent probe, homogeneously substituting for Gd3+ 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 Ca2+ 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. Polarization-dependent measurements of a single crystal of NaGd(Eu)(MoO4)2 identify the coordination geometry to be of C2v point symmetry. The S4 symmetry of the Ca site within the powellite lattice can be transformed into C2v assuming minor motion in the first coordination sphere.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Anorganische Chemie
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in: Dalton Transactions, Jahrgang 42, Nr. 23, 04.04.2013, S. 8387-8393.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Characterization of powellite-based solid solutions by site-selective time resolved laser fluorescence spectroscopy
AU - Schmidt, Moritz
AU - Heck, Stephanie
AU - Bosbach, Dirk
AU - Ganschow, Steffen
AU - Walther, Clemens
AU - Stumpf, Thorsten
PY - 2013/4/4
Y1 - 2013/4/4
N2 - We present a comprehensive study of the solid solution system Ca 2(MoO4)2-NaGd(MoO4)2 on the molecular scale, by means of site-selective time resolved laser fluorescence spectroscopy (TRLFS). Eu3+ is used as a trace fluorescent probe, homogeneously substituting for Gd3+ 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 Ca2+ 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. Polarization-dependent measurements of a single crystal of NaGd(Eu)(MoO4)2 identify the coordination geometry to be of C2v point symmetry. The S4 symmetry of the Ca site within the powellite lattice can be transformed into C2v assuming minor motion in the first coordination sphere.
AB - We present a comprehensive study of the solid solution system Ca 2(MoO4)2-NaGd(MoO4)2 on the molecular scale, by means of site-selective time resolved laser fluorescence spectroscopy (TRLFS). Eu3+ is used as a trace fluorescent probe, homogeneously substituting for Gd3+ 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 Ca2+ 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. Polarization-dependent measurements of a single crystal of NaGd(Eu)(MoO4)2 identify the coordination geometry to be of C2v point symmetry. The S4 symmetry of the Ca site within the powellite lattice can be transformed into C2v assuming minor motion in the first coordination sphere.
UR - http://www.scopus.com/inward/record.url?scp=84878062405&partnerID=8YFLogxK
U2 - 10.1039/c3dt50146a
DO - 10.1039/c3dt50146a
M3 - Article
AN - SCOPUS:84878062405
VL - 42
SP - 8387
EP - 8393
JO - Dalton Transactions
JF - Dalton Transactions
SN - 1477-9226
IS - 23
ER -