Saddle-ShapedHeterometallic 3d–4f Cluster:Structure and Magnetocaloric Effect
Heterometallic 3d–4f cluster complexes have enjoyed much recent interest because of their structural esthetics, unique properties, and useful applications. A cluster of the formula [Gd<sub>68</sub>Co<sub>60</sub>(OH)<sub>116</sub>(CH<sub>3</sub>COO)<sub>8</sub>(IDA)<sub>56</sub>(CO<sub>3</sub>)<sub>4</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>8</sub>(H<sub>2</sub>O)<sub>92</sub>Cl<sub>16</sub>]Cl<sub>48</sub>·10H<sub>2</sub>O·60CH<sub>3</sub>OH (<b>Gd</b><sub><b>68</b></sub><b>Co</b><sub><b>60</b></sub>, IDA: iminodiacetate), obtained by the cohydrolysis of Gd<sup>3+</sup> and Co<sup>2+</sup> in the presence of IDA, is herein reported. Crystallographic studies revealed its saddle-shaped cyclic structure featuring a nanometer-sized central cavity. A maximum magnetic entropy change of 38.58 J·K<sup>–1</sup>·kg<sup>–1</sup> was achieved at 3.0 K and 7.0 T, placing <b>Gd</b><sub><b>68</b></sub><b>Co</b><sub><b>60</b></sub> favorably alongside the better-performing clusters for magnetic cooling applications.
Publication Details
- Journal
- Figshare
- Published
- 2025-03-07
- DOI
- https://doi.org/10.1021/acs.inorgchem.4c04910.s001
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00