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

Bibliographic Details
Parent link:Polyhedron: Scientific Journal
Vol. 105.— 2016.— [P. 178-185]
Corporate Author: Национальный исследовательский Томский политехнический университет Физико-технический институт Кафедра химической технологии редких, рассеянных и радиоактивных элементов (№ 43)
Other Authors: Babailov S. P. Sergey Pavlovich, Stabnikov P. A. Pavel Aleksandrovich, Korolkov I. V. Iljya Viktorovich, Pervukhina N. V. Nataljya Viktorovna, Koshcheeva O. S. Olga Sergeevna, Chuykov I. P. Igor Petrovich
Summary:Title screen
Synthesis and the crystal structure of a novel complex Tm(III) tris-pivaloyltrifluoracetonate, [Tm2(ptf)6] (I) and Tm(III)-tris-pivaloyltrifluoracetonate-(isopropanol)aqua with 18-crown-6 {[Tm(ptf)3(HOCH(CH3)2)H2O] Ч (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 [Tm2(ptf)6] molecules. Two thulium atoms are located at the 3.7993(2) Е 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 1H NMR that complexes I, II, [Tm(H2O)(ptf)3] and [Tm(H2O)(ptf)3] Ч (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.
Режим доступа: по договору с организацией-держателем ресурса
Published: 2016
Subjects:
электронный ресурс
труды учёных ТПУ
молекулярная структура
кристаллическое состояние
волатильность
Online Access:http://dx.doi.org/10.1016/j.poly.2015.12.014
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648939

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