A series of 1,4,8,11-tetraazacyclotetradecanenickel(II) cyanometalates ([Ni(cyclam)]3[Fe(CN)6]2·11H2O (1), [Ni(cyclam)]2[Mo(CN)8]·3H2O (2), [Ni(cyclam)]2[W(CN)8]·3H2O (3), and [Ni(cyclam)][Pt(CN)4]·3H2O (4) (cyclam = 1,4,8,11-tetraazacyclotetradecane)) was obtained and characterised. Magnetic-susceptibility measurements showed a high-spin configuration (S = 1) of Ni(II) in all compounds, which was attributed to the interaction of cyano ligands with free axial coordination sites on nickel. The presence of bridging cyano groups in 1 was confirmed by IR and visible reflectance spectra. Compound 1 shows a long-range magnetic order below 8 K.
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Nowicka et al. (1999) studied this question.
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