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Two field-induced slow magnetic relaxation processes in a mononuclear Co(ii) complex with a distorted octahedral
1State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Mirostructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China. yousong@nju.edu.cn.
Abstract:
A distorted octahedral Co(II) complex is reported with homoscorpionate ligands. This complex comprised a field-induced single-molecule magnet, showing two slow relaxation processes under a low dc field (<800 Oe) and only one process under a high dc field (≥800 Oe), which was an unusually discovery for 3d metal ions. On the basis of the ac magnetic data, we show for the first time that one of the slow relaxation processes in the low dc field originates from intermolecular dipolar interactions. Interestingly, the Raman process is predominant in the spin reversal relaxation process. The origin of the behaviours of the complex was elucidated by ab initio calculations.
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