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Crystallization condition-controlled assembly of oxygen-bridged tetranuclear and hexanuclear Ni(ii) clusters: syntheses, structures and properties
- Liu, Shizheng, Wang, Suna, Cao, Fan, Fu, Haiying, Li, Dacheng, Dou, Jianmin
- RSC advances 2012 v.2 no.4 pp. 1310-1313
- acetates, crystallization, ferrimagnetic materials, ferromagnetism, ions, nickel, schiff bases, solvents
- Crystallization of a Schiff base with nickel acetate in different solvents yields a tetranuclear (dicubane-like [Ni₄O₄] core with two missing vertices) and a hexanuclear cluster ([Ni₆O₆] core with two nickel(ii) ions attached to a [Ni₄O₄] cubane through oxygen bridges). Metal centers within these clusters exhibit ferromagnetic and antiferromagnetic coupling interactions, respectively.