A perfect triangular dysprosium single-molecule magnet with virtually antiparallel Ising-like anisotropy†
Yan-Cong
Chen, 
a
Jun-Liang
Liu,
*a
Zhao-Ping
Ni,
*a
Marcus
Giansiracusa,
*b
Nicholas F.
Chilton
*b
and
Ming-Liang
Tong
a
a
Jun-Liang
Liu,
*a
Zhao-Ping
Ni,
*a
Marcus
Giansiracusa,
*b
Nicholas F.
Chilton
*b
and
Ming-Liang
Tong
a
Abstract
We report a trinuclear dysprosium single-molecule magnet, [Dy3(μ3-CO3)(Clbbpen)3](CF3SO3)·6MeCN, which has a perfectly equilateral triangular structure. The Ising-like anisotropy of each Dy(III) site is oriented almost normal to the triangular plane, and magnetic dipole interactions between the spins cause an antiparallel Ising ground state. Crossing of the antiferromagnetic states by the ferromagnetic state occurs at ca. 0.2 T and gives rise to a characteristic step in magnetic hysteresis loops. This molecule thus serves as a perfectly triangular model system to explore frustrated Ising anisotropy.
- This article is part of the themed collections: Celebrating our 2021 Prizewinners and Rare Earth Chemistry – In memory of Professor Xu Guangxian at his centenary
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