硝基氮氧化物自由基与[m (hfac)2] (m = cuii和mnii)配位化合物的合成、晶体结构和磁性研究

IF 0.5 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Quimica Nova Pub Date : 2023-02-01 DOI:10.21577/0100-4042.20170951

Yan-Li Gao, Yufei Wang, Huijin Liu, Xiaoli Song, Yali Wang, Ting Su, Shiqing Bi

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引用次数: 0

摘要

金属六氟乙酰丙酮[MII(hfac)2, M = Cu, Mn]与稳定的硝基氮氧化物2 -(3 -异丁基-吡唑)- 4,4,5,5 -四甲基咪唑啉- 1 -氧- 3 -氧化物(L)反应，得到一维z形链体系[{Cu(hfac)2}2L2]n和[CuMn(hfac)4L2]n。[{Cu(hfac)2}2L2]n单晶的主要特征是它们能够随温度变化进行可逆的结构重排，并伴有磁性异常。cmT值在低温时表现为强反铁磁性，温度升高时变为铁磁性。异核配合物[CuMn(hfac)4L2]n在锰和硝基氮氧化物之间表现出反铁磁相互作用。

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SYNTHESIS, CRYSTAL STRUCTURES AND MAGNETIC PROPERTIES OF COORDINATION COMPOUNDS WITH NITRONYL NITROXIDE RADICALS AND [M(HFAC)2] (M = CUII AND MNII)

The reaction of metal hexafluoroacetylacetonato [MII(hfac)2, M = Cu, Mn] with the stable nitronyl nitroxide 2−(3−isobutyl−pyrazole)−4,4,5,5−tetramethylimidazoline−1−oxyl−3−oxide (L), resulted in one dimensional zig−zag chain systems [{Cu(hfac)2}2L2]n and [CuMn(hfac)4L2]n. The main feature inherent in the nature of [{Cu(hfac)2}2L2]n single crystals is their ability to undergo reversible structural rearrangements with temperature variation, accompanied by anomalies of magnetism. The value of cmT shown strongly antiferromagnetic at low temperature and becomes ferromagnetic when the temperature increases. And the heteronuclear complex [CuMn(hfac)4L2]n shows antiferromagnetic interactions between manganese and nitronyl nitroxide.

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来源期刊

Quimica Nova 化学-化学综合

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

2-4 weeks

期刊介绍： Química Nova publishes in portuguese, spanish and english, original research articles, revisions, technical notes and articles about education in chemistry. All the manuscripts submitted to QN are evaluated by, at least, two reviewers (from Brazil and abroad) of recognized expertise in the field of chemistry involved in the manuscript. The Editorial Council can be eventually asked to review manuscripts. Editors are responsible for the final edition of QN.