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 Научная публикация

Журнал

Polyhedron
ISSN: 0277-5387

Вых. Данные

Год: 2016, Том: 105, Страницы: 178-185 Страниц : 8 DOI: 10.1016/j.poly.2015.12.014

Ключевые слова

beta-Diketonates of Tm(III); 18-Crown-6; The molecular structure in the crystal state and solution; Volatility; Paramagnetic NMR

Авторы

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

Организации

1	(Данные Web of science) Russian Acad Sci, Siberian Branch, AV Nikolaev Inst Inorgan Chem, Av Lavrentyev 3, Novosibirsk 630090, Russia
2	(Данные Web of science) Natl Res Tomsk Polytech Univ, Lenin Ave 30, Tomsk 634050, Russia
3	(Данные Web of science) Novosibirsk State Univ, Pirogova 2, Novosibirsk 630090, Russia
4	(Данные Web of science) Russian Acad Sci, Siberian Branch, NN Vorozhtsov Novosibirsk Inst Organ Chem, Av Lavrentyev 9, Novosibirsk 630090, 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

Опубликована в печати:

1 февр. 2016 г.

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