Anisotropy of CoII transferred to the Cr7Co polymetallic cluster via strong exchange interactions†,Chemical Science

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Anisotropy of CoII transferred to the Cr7Co polymetallic cluster via strong exchange interactions†
Chemical Science ( IF 7.6 ) Pub Date : 2018-03-07 00:00:00 , DOI: 10.1039/c8sc00163d
Elena Garlatti ₁ , Tatiana Guidi ₂ , Alessandro Chiesa _{1,

3} , Simon Ansbro _{4,

5} , Michael L Baker ₆ , Jacques Ollivier ₅ , Hannu Mutka ₅ , Grigore A Timco ₄ , Inigo Vitorica-Yrezabal ₄ , Eva Pavarini _{3,

7} , Paolo Santini ₁ , Giuseppe Amoretti ₁ , Richard E P Winpenny ₄ , Stefano Carretta ₁

Affiliation

The Cr₇Co ring represents a model system to understand how the anisotropy of a Co^II ion is transferred to the effective anisotropy of a polymetallic cluster by strong exchange interactions. Combining sizeable anisotropy with exchange interactions is an important point in the understanding and design of new anisotropic molecular nanomagnets addressing fundamental and applicative issues. By combining electron paramagnetic resonance and inelastic neutron scattering measurements with spin Hamiltonian and ab initio calculations, we have investigated in detail the anisotropy of the Co^II ion embedded in the antiferromagnetic ring. Our results demonstrate a strong and anisotropic exchange interaction between the Co and the neighbouring Cr ions, which effectively transmits the anisotropy to the whole molecule.

中文翻译：

CoII 的各向异性通过强交换相互作用转移到 Cr7Co 多金属簇†

Cr ₇ Co 环代表了一个模型系统，用于了解 Co ^II离子的各向异性如何通过强交换相互作用转化为多金属簇的有效各向异性。将相当大的各向异性与交换相互作用相结合是理解和设计解决基本和应用问题的新型各向异性分子纳米磁体的一个重要点。通过将电子顺磁共振和非弹性中子散射测量与自旋哈密顿量和从头计算相结合，我们详细研究了嵌入反铁磁环中的 Co ^II离子的各向异性。我们的结果表明，Co 和邻近的 Cr 离子之间存在强烈的各向异性交换相互作用，有效地将各向异性传递到整个分子。

更新日期：2018-03-07

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