Structure and paramagnetic properties of tris -pivaloyltrifluoracetonate thulium(III) complexes with 18-crown-6 by X-ray analysis and NMR

Structure and paramagnetic properties of tris -pivaloyltrifluoracetonate thulium(III) complexes with 18-crown-6 by X-ray analysis and NMR Full article

Journal

Polyhedron
ISSN: 1873-3719 , E-ISSN: 0277-5387

Output data

Year: 2016, Volume: 105, Pages: 178-185 Pages count : 8 DOI: 10.1016/j.poly.2015.12.014

Authors

Babailov Sergey P. ^1,2 , Stabnikov Pavel A. ¹ , Korolkov Ilya V. ^1,3 , Pervukhina Natalie V. ¹ , Koshcheeva Olga S. ¹ , Chuikov Igor P. ⁴

Affiliations

1	A.V. Nikolaev Institute of Inorganic Chemistry, The Siberian Branch of the Russian Academy of Sciences, Av. Lavrentyev 3, Novosibirsk 630090, Russia
2	National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
3	Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russia
4	N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, The Siberian Branch of the Russian Academy of Sciences, Av. Lavrentyev 9, 630090 Novosibirsk, Russia

Synthesis and the crystal structure of a novel complex Tm(III) tris-pivaloyltrifluoracetonate, [Tm-2(Ptf)(6)] (I) and Tm(III)-iris-pivaloyltrifluoracetonate-(isopropanol)aqua with 18-crown-6 ([Tm(ptf)(3)(HOCH (CH3)(2))H2O] x (18-crown-6)} (II) are reported. A single crystal X-ray diffraction study revealed that complex I has molecular structure which consists of discrete dimeric [Tm-2(ptf)(6)] molecules. Two thulium atoms are located at the 3.7993(2) angstrom distance. Complex II has molecular structure with hydrogen bonds between oxygen atoms of water molecule and 18-crown-6. Thermogravimetric data evidence the volatility of compound I. It was found by H-1 NMR that complexes I, II, [Tm(H2O)(ptf)(3)] and [Tm(H2O)(ptf)(3)] x (18-crown-6) may be used (due to the substantial temperature dependence of the paramagnetic lanthanide-induced shifts {LIS}) as NMR thermometric sensors for controlling the local temperature in organic media. According to our information this is the first example of a detailed study of the essential temperature dependence of the LIS on 1/T for Tm complexes in organic media. (C) 2015 Elsevier Ltd. All rights reserved.

Babailov S.P. , Stabnikov P.A. , Korolkov I.V. , Pervukhina N.V. , Koshcheeva O.S. , Chuikov I.P.
Structure and paramagnetic properties of tris -pivaloyltrifluoracetonate thulium(III) complexes with 18-crown-6 by X-ray analysis and NMR
Polyhedron. 2016. V.105. P.178-185. DOI: 10.1016/j.poly.2015.12.014 WOS Scopus РИНЦ OpenAlex

Published print:

Feb 1, 2016

Web of science:	WOS:000370900600022
Scopus:	2-s2.0-84953790829
Elibrary:	26929707
OpenAlex:	W2202650918

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