Homochiral Dy2 zero-field single-molecule magnets derived from axial chiral ligands (R)/(S)-octahydro-1,1'-bi-2-naphthyl phosphate

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Dalton Transactions Pub Date : 2025-01-28 DOI:10.1039/d4dt03408b

Cai-Ming Liu, Xiang Hao, Yi-Quan Zhang

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Abstract

The construction of homochiral zero-field single-molecule magnets (SMMs), especially with axial chiral ligands, remains a great challenge. Herein the first examples of homochiral Dy(III) Schiff base complexes based on axial chiral ligands (R)/(S)-5,5',6,6',7,7',8,8'-octahydro-1,1'-bi-2-naphthyl phosphate (R-HL/S-HL), [Dy₂(R-L/S-L)₂(L_Schiff)₂(H₂O)(MeOH)]·2MeOH·CH₂Cl₂·2MeCN·2H₂O (R-1/S-1) [H₂L_Schiff = (E)-N'-(5-fluoro-2-hydroxybenzylidene)pyrazine-2-carbohydrazide], were synthesized at room temperature, which show ferromagnetic coupling, and perform as zero-field SMMs, with a U_eff/k value of 61 K at 0 Oe. Ab initio calculations were used to explain their magnetic interaction and magnetic relaxation properties. Furthermore, the magnetic circular dichroism (MCD) spectra of R-1/S-1 revealed that they display obvious magneto-optical effects.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.