Structures and magnetic properties of five lanthanide-radical complexes constructed by 8-methoxyquinoline substituted tridentate chelating nitronyl nitroxide radical

Bai，Feifei1; Yao，Binling2; Wang，Ruirui1; Wang，Wen1; Wang，Qinglun1; Ma，Yue1; Li，Licun1

2021-06-01

10.1016/j.jssc.2021.122115

JOURNAL OF SOLID STATE CHEMISTRY   影响因子和分区

0022-4596

1095-726X

Five lanthanide complexes [Ln(hfac)(8-MeOTQ-2-NIT)] constructed by a tridentate chelating 8-methoxyquinoline substituted nitronyl nitroxide radical (Ln ​= ​Gd (1), Tb (2), Dy (3), Ho (4), Er (5), hfac ​= ​hexafluoroacetylacetonate, 8-MeOTQ-2-NIT ​= ​2-(8-methoxyquinoline)-4,4,5,5- tetra-methylimidazoline-1-oxyl-3-oxide) have been successfully synthesized and characterized. The five complexes have similar mononuclear two-spin structures with one Ln ion and one radical (Rad) in the molecules. And all Ln ions are nine-coordinated in the geometry between mono-capped square antiprism (C) and a trigonal bipyramidal (D). Alternating current magnetic studies show that Tb and Dy complexes display frequency dependence of out of phase signals indicating the slow magnetic relaxation behavior of single molecular magnets. The ferromagnetic interactions in Gd/Tb-Rad complexes and the very weak antiferromagnetic interactions in Dy/Ho/Er-Rad complexes were estimated by the rough model combining lanthanide single ions approximation and molecular-field approximation.

Crystal structures Lanthanide complexes Magnetic properties Nitronyl nitroxide radical

SCI ; EI

英语

其他

National Natural Science Foundation of China[21471084,21625103,21771111]

Chemistry

Chemistry, Inorganic & Nuclear ; Chemistry, Physical

WOS:000644702700021

ACADEMIC PRESS INC ELSEVIER SCIENCE

20211310155578

Chelation ; Gadolinium compounds ; Holmium ; Ions ; Magnetism ; Synthesis (chemical) ; Terbium compounds

Rare Earth Metals:547.2 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Chemical Reactions:802.2

CHEMISTRY

2-s2.0-85103279236

Scopus

1.Department of Chemistry,Key Laboratory of Advanced Energy Material Chemistry,Tianjin Collaborative Innovation Center of Chemical Science and Engineering,Nankai University,Tianjin,300071,China
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,China

Bai，Feifei,Yao，Binling,Wang，Ruirui,et al. Structures and magnetic properties of five lanthanide-radical complexes constructed by 8-methoxyquinoline substituted tridentate chelating nitronyl nitroxide radical[J]. JOURNAL OF SOLID STATE CHEMISTRY,2021,298.

Bai，Feifei.,Yao，Binling.,Wang，Ruirui.,Wang，Wen.,Wang，Qinglun.,...&Li，Licun.(2021).Structures and magnetic properties of five lanthanide-radical complexes constructed by 8-methoxyquinoline substituted tridentate chelating nitronyl nitroxide radical.JOURNAL OF SOLID STATE CHEMISTRY,298.

Bai，Feifei,et al."Structures and magnetic properties of five lanthanide-radical complexes constructed by 8-methoxyquinoline substituted tridentate chelating nitronyl nitroxide radical".JOURNAL OF SOLID STATE CHEMISTRY 298(2021).