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Tuning slow magnetic relaxation behaviour in a {Dy2}-based one-dimensional chain via crystal field perturbation.

ABSTRACT: Two novel {Dy2}-based one dimensional chain compounds {[Dy2(H3L)4(OAc)6]·2MeOH} n (1) and {[Dy2(H3L)4(OAc)4(NCS)2]·2MeOH} n (2) (H3L = 1,3-bis(2-hydroxynaphthalenemethyleneamino)-propan-2-ol) have been prepared under solvothermal conditions. Crystal structure analyses indicate that 1 and 2 feature similar 1D chain structures bearing dinuclear secondary building units. The difference between these two structures is that one chelated acetate ligand of Dy(iii) ion in 1 is replaced by one monodentate coordinated NCS- ion in 2, leading to their different coordination numbers and geometry configurations to Dy(iii) ion. Magnetic properties indicate that 1 and 2 display slow magnetic relaxation behavior with an effective energy barrier of 16.44(2) K in 1 and 8.02(2) K in 2, respectively, which is maybe attributed to the subtle crystal field perturbation of Dy(iii) ions.

SUBMITTER: Yu S 

PROVIDER: S-EPMC9050697 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Tuning slow magnetic relaxation behaviour in a {Dy<sub>2</sub>}-based one-dimensional chain <i>via</i> crystal field perturbation.

Yu Shui S   Zhang Qinhua Q   Hu Huancheng H   Chen Zilu Z   Liu Dongcheng D   Liang Yuning Y   Liang Fupei F  

RSC advances 20200324 20

Two novel {Dy<sub>2</sub>}-based one dimensional chain compounds {[Dy<sub>2</sub>(H<sub>3</sub>L)<sub>4</sub>(OAc)<sub>6</sub>]·2MeOH} <sub><i>n</i></sub> (1) and {[Dy<sub>2</sub>(H<sub>3</sub>L)<sub>4</sub>(OAc)<sub>4</sub>(NCS)<sub>2</sub>]·2MeOH} <sub><i>n</i></sub> (2) (H<sub>3</sub>L = 1,3-bis(2-hydroxynaphthalenemethyleneamino)-propan-2-ol) have been prepared under solvothermal conditions. Crystal structure analyses indicate that 1 and 2 feature similar 1D chain structures bearing dinuclea  ...[more]

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