Slow magnetic relaxation in a Dy-3 triangle and a bistriangular Dy-6 cluster

Wang, Wen1,2,3; Shang, Tao4; Wang, Juan1,2,3; Yao, Bin-Ling5; Li, Li-Cun1,2,3; Ma, Yue1,2,3; Wang, Qing-Lun1,2,3; Zhang, Yuan-Zhu5; Zhang, Yi-Quan4; Zhao, Bin1,2,3

2022-05-01

10.1039/d1dt03414f

DALTON TRANSACTIONS   影响因子和分区

1477-9226

1477-9234

Two lanthanide single-molecule magnets (SMMs) [Dy-3(mu(3)-OH)(HL-1)(3)(H2O)(3)](NO3)2 center dot 3H(3)O (1, H3L-1 = (E)-3-(((8-hydroxyquinolin-2-yl)methylene)amino)propane-12-diol) and [Dy-6(mu(3)-OH)(4)(H2L-2)(4)(HL-2)(2)(L-2)(2)] (2, H3L-2 = (E)-2-hydroxy-N'-(2-hydroxy-3-methoxybenzylidene)benzohydrazide) were synthesized and characterized structurally and magnetically. Complex 1 contains a triangular Dy 3 core in which the three Dy3+ ions share a mu(3)-OH- anion and the deprotonated ligands of (HL-1)(2-) serve both capping and bridging functions, while 2 displays a centrosymmetric hexanuclear Dy-III structure with two similar Dy-3 triangular cores ligated by two fully deprotonated (L-2)(3-) ligands, each of which shares two mu(3)-OH- anions. All the Dy-III ions are eight-coordinated with quasi D-2d or C-2v symmetry. Magnetic studies reveal that 1 exhibited two-step magnetic relaxation under an applied dc field of 800 Oe, with effective energy barriers of 40.1 and 31.0 K for the slow relaxation (SR) and fast relaxation regimes (FR), respectively. Meanwhile, 2 only showed a tail of slow magnetic relaxation at above 2 K. Ab initio calculations have been carried out to show the nature of their different magnetic properties.

SCI ; EI

英语

通讯

National Natural Science Foundation of China[21471084,21625103,21771111,21773122,21973046] ; Stable Support Plan Program of Shenzhen Natural Science Fund[20200925151834005]

Chemistry

Chemistry, Inorganic & Nuclear

WOS:000807549900001

ROYAL SOC CHEMISTRY

20222412235935

Calculations ; Magnetic relaxation ; Magnetism ; Negative ions ; Synthesis (chemical)

Magnetism: Basic Concepts and Phenomena:701.2 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Mathematics:921

CHEMISTRY

Web of Science

1.Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
2.Nankai Univ, Key Lab Adv Energy Mat Chem MOE, Tianjin 300071, Peoples R China
3.Nankai Univ, TKL Met & Mol Based Mat Chem, Tianjin 300071, Peoples R China
4.Nanjing Normal Univ, Sch Phys Sci & Technol, Jiangsu Key Lab NSLSCS, Nanjing 210023, Peoples R China
5.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

Wang, Wen,Shang, Tao,Wang, Juan,et al. Slow magnetic relaxation in a Dy-3 triangle and a bistriangular Dy-6 cluster[J]. DALTON TRANSACTIONS,2022,51:9404-9411.

Wang, Wen.,Shang, Tao.,Wang, Juan.,Yao, Bin-Ling.,Li, Li-Cun.,...&Zhao, Bin.(2022).Slow magnetic relaxation in a Dy-3 triangle and a bistriangular Dy-6 cluster.DALTON TRANSACTIONS,51,9404-9411.

Wang, Wen,et al."Slow magnetic relaxation in a Dy-3 triangle and a bistriangular Dy-6 cluster".DALTON TRANSACTIONS 51(2022):9404-9411.