EPR Features of Spin-Crossover in Tris(N,N-Dialkyl-Dithiocarbamato)Iron(III)

被引：3
|
作者：
Ivanova, T. A. [1 ]
Turanova, O. A. [1 ]
Ovchinnikov, I. V. [1 ]
Andgheevskii, B. [2 ]
Augustyniak-Jablokow, M. [2 ]
机构：
[1] Zavoisky Phys Tech Inst, Kazan, Russia
[2] Inst Mol Phys PAS, PL-60179 Poznan, Poland
来源：
APPLIED MAGNETIC RESONANCE | 2011年 / 40卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
ELECTRON-PARAMAGNETIC-RES; CRYSTAL-STRUCTURE; X-RAY; MAGNETIC-SUSCEPTIBILITY; INTERMEDIATE SPIN; RESONANCE; COMPLEXES; TRANSITION; TRIS(N; N-DIMETHYLDITHIOCARBAMATO)IRON(III); DITHIOCARBAMATE;
D O I：
10.1007/s00723-010-0171-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The temperature dependence of electron paramagnetic resonance (EPR) spectra of a series of dithiocarbamates Fe(RR'dtc)(3) was studied in the temperature range from 5 to 300 K. A small part of solvated complexes serving as spin probes in the EPR-silent matrix enabled the observation of EPR of the Fe(III) ion in the whole temperature range. The spin transition was revealed in the reduction of the integral intensity of the signal from the high-spin complexes and in the non-monotonous change of the line width with temperature decrease due to the effect of the low-spin complexes with short spin-lattice relaxation times. Below ca. 60 K, the ferromagnetic ordering of the magnetic moments in low-spin particles ("domains") arising at the spin transition was observed.
引用
收藏
页码：21 / 30
页数：10
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