Slow magnetic relaxation in one dimensional nitronyl nitroxide-Dy(III) chain suggesting single-chain magnet behavior
详细信息    查看全文
文摘
Two new nitronyl nitroxide bridged one-dimensional lanthanide complexes [Dy(hfac)3(NIT-2thien)]n (1); [Dy(hfac)3(NIT-3Brthien)]n (2) (hfac = hexafluoroacetylacetonate; NIT-2thien = 2-(2¡ä-thienyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide; NIT-3Brthien = 2-(3¡ä-bromo-2¡ä-thienyl)-4,4,5,5- tetramethyl-imidazoline-1-oxyl-3-oxide) have been successfully prepared. Single crystal X-ray crystallographic analysis reveals that both complexes consist of linear chains built up by Dy(hfac)3 units bridged by nitronyl nitroxide radicals through their NO groups. AC measurements indicate that two complexes are out-of-phase frequency-dependent suggesting single-chain magnet behavior.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700