Heterometallic cubane single-molecule magnets.
Heterometallic cubane single-molecule magnets.
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DOI:
10.1021/ic7012107
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发表时间:
2007-09
影响因子:
4.6
通讯作者:
P. Feng;C. Beedle;W. Wernsdorfer;C. Koo;M. Nakano;S. Hill;D. Hendrickson
中科院分区:
文献类型:
--
作者:
P. Feng;C. Beedle;W. Wernsdorfer;C. Koo;M. Nakano;S. Hill;D. Hendrickson
Two new heterometallic cubane molecules have been synthesized. High-frequency electron paramagnetic resonance and magnetization measurements indicate that [Mn(3)Ni(hmp)(3)O(N(3))(3)(C(7)H(5)O(2))(3)] (1) displays a well-isolated S = 5 ground state (DeltaE > 120 K), with g = 2.0, D = -0.23 cm(-1), and ferromagnetic Mn-Mn exchange interactions competing with antiferromagnetic Ni-Mn interactions. [Mn(3)Zn(hmp)(3)O(N(3))(3)(C(3)H(5)O(2))(3)] (2) possesses a S = 6 ground state (DeltaE > 105 K), with g = 2.0, D = -0.14 cm(-1), and ferromagnetic Mn-Mn exchange interactions. Magnetization vs magnetic field data for oriented single crystals of 1 and 2 indicate that both complexes are single-molecule magnets.