Abstract
Four tetranuclear heterometallic compounds, [(Tp)Fe(CN)3] 2(Ru2(DMBA)4] (1), [(MeTp)Fe(CN) 3]2[Ru2(DMBA)4] (2), [( iBuTp)Fe(CN)3]2[Ru2(DMBA) 4] (3), and [(PhTp)Fe(CN)3]2[Ru 2(DMBA)4] (4) [DMBA = N,N′-dimethylbenzamidinate, Tp = (hydrotris(pyrazolyl)borate, MeTp = (methyltris(pyrazolyl)borate, iBuTp = (2-methylpropyltris(pyrazolyl)borate, and PhTp = (tris(pyrazolyl)phenylborate)] were prepared from the combination of Ru 2(DMBA)4(NO3)2 and an appropriate [(RTp)Fe(CN)3]-. Molecular structures of compounds 1-4 were established using single-crystal X-ray diffraction, and all feature a linear Fe-C≡N-Ru-Ru-N≡C-Fe array. The magnetic study revealed that the temperature dependence of χMT is mostly attributed to the zero-field splitting of the Ru2 center, indicating the absence of strong spin coupling among three metallic centers. The electronic independence was further confirmed by the vis-NIR spectroscopic studies. Also described are the voltammetric properties of these compounds.
Original language | English |
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Pages (from-to) | 9716-9722 |
Number of pages | 7 |
Journal | Inorganic Chemistry |
Volume | 47 |
Issue number | 20 |
DOIs | |
State | Published - 20 Oct 2008 |
Externally published | Yes |