Complex of ytterbium ethylenediaminetetraacetate as combined NMR paramagnetic probe for in situ control of temperature and pH in aqueous media

Abstract

The paper reports variations in LIS for [Yb(H₂O)_n(EDTA)]⁻ and [Yb₂(EDTA)₃]⁶⁻ complexes as a result of variation in pD and temperature. This is the first detection of kinetically stable complexes of the yttrium subgroup with stoichiometric ratio of 2:3. The experimental paramagnetic lanthanide-induced chemical shift values of these compounds are well fitted by linear dependence on 1/T at different pH values. The [Yb(H₂O)_n(EDTA)]⁻ complex can be considered as one of the most promising combined NMR spectroscopic probe to determine temperature and pH in aqueous media.

Original language	English
Pages (from-to)	323-326
Number of pages	4
Journal	Polyhedron
Volume	139
DOIs	https://doi.org/10.1016/j.poly.2017.11.007
Publication status	Published - 8 Jan 2018

Keywords

Aqueous solutions
Complexes of lanthanides
Lanthanide-induced shifts in NMR spectra
Temperature and pH sensitive NMR lanthanide paramagnetic probe
Ytterbium

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.poly.2017.11.007

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title = "Complex of ytterbium ethylenediaminetetraacetate as combined NMR paramagnetic probe for in situ control of temperature and pH in aqueous media",

abstract = "The paper reports variations in LIS for [Yb(H2O)n(EDTA)]− and [Yb2(EDTA)3]6− complexes as a result of variation in pD and temperature. This is the first detection of kinetically stable complexes of the yttrium subgroup with stoichiometric ratio of 2:3. The experimental paramagnetic lanthanide-induced chemical shift values of these compounds are well fitted by linear dependence on 1/T at different pH values. The [Yb(H2O)n(EDTA)]− complex can be considered as one of the most promising combined NMR spectroscopic probe to determine temperature and pH in aqueous media.",

keywords = "Aqueous solutions, Complexes of lanthanides, Lanthanide-induced shifts in NMR spectra, Temperature and pH sensitive NMR lanthanide paramagnetic probe, Ytterbium",

author = "Babailov, {Sergey P.} and Zapolotsky, {Eugeny N.}",

year = "2018",

month = jan,

day = "8",

doi = "10.1016/j.poly.2017.11.007",

language = "English",

volume = "139",

pages = "323--326",

journal = "Polyhedron",

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AU - Babailov, Sergey P.

AU - Zapolotsky, Eugeny N.

PY - 2018/1/8

Y1 - 2018/1/8

N2 - The paper reports variations in LIS for [Yb(H2O)n(EDTA)]− and [Yb2(EDTA)3]6− complexes as a result of variation in pD and temperature. This is the first detection of kinetically stable complexes of the yttrium subgroup with stoichiometric ratio of 2:3. The experimental paramagnetic lanthanide-induced chemical shift values of these compounds are well fitted by linear dependence on 1/T at different pH values. The [Yb(H2O)n(EDTA)]− complex can be considered as one of the most promising combined NMR spectroscopic probe to determine temperature and pH in aqueous media.

AB - The paper reports variations in LIS for [Yb(H2O)n(EDTA)]− and [Yb2(EDTA)3]6− complexes as a result of variation in pD and temperature. This is the first detection of kinetically stable complexes of the yttrium subgroup with stoichiometric ratio of 2:3. The experimental paramagnetic lanthanide-induced chemical shift values of these compounds are well fitted by linear dependence on 1/T at different pH values. The [Yb(H2O)n(EDTA)]− complex can be considered as one of the most promising combined NMR spectroscopic probe to determine temperature and pH in aqueous media.

KW - Aqueous solutions

KW - Complexes of lanthanides

KW - Lanthanide-induced shifts in NMR spectra

KW - Temperature and pH sensitive NMR lanthanide paramagnetic probe

KW - Ytterbium

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