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pH-Controlled Assembly of Organophosphonate-Bridged Dysprosium(III) Single-Molecule Magnets Based on Polyoxometalates

DOI

43

Citations

47

References

2018

Year

Yu Huo, Yan‐Cong Chen, Si‐Guo Wu, Jian‐Hua Jia, Wen‐Bin Chen, Jun‐Liang Liu, Ming‐Liang Tong
Inorganic Chemistry

Abstract

Two structurally intriguing dysprosium(III)-substituted polyoxometalates, [Dy<sub>6</sub>(ampH)<sub>4</sub>(H<sub>2</sub>O)<sub>23</sub>(ampH<sub>2</sub>)(PW<sub>11</sub>O<sub>39</sub>)<sub>2</sub>] (1) and [Dy<sub>9</sub>(CO<sub>3</sub>)<sub>3</sub>(ampH)<sub>2</sub>(H<sub>2</sub>O)<sub>12</sub>(PW<sub>10</sub>O<sub>37</sub>)<sub>6</sub>]<sup>35-</sup> (2), are assembled by the same precursor under different pH conditions. The structure of 1 contains an octahedral {Dy<sub>6</sub>(ampH)<sub>4</sub>} core, and a unique windmill-type {Dy<sub>9</sub>(CO<sub>3</sub>)<sub>3</sub>(ampH)<sub>2</sub>} for 2. Single-molecule magnet behavior is observed for 2 with a thermally activated energy barrier of 56 K and no appreciable quantum tunneling of magnetization under zero field.

References

YearCitations

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