|
|||||
|
|
Three Co(III)-Fe(II) complexes based on hexacyanoferrates: Syntheses, spectroscopic and structural characterizations |
|
| Authors: | M Matiková-Mal’arová J ?ernák W Massa |
| Institution: | a Department of Inorganic Chemistry, Institute of Chemistry, P.J. Šafárik University, 041 54 Košice, Slovakia b Department of Inorganic Chemistry, Palacký University, 77147 Olomouc, Czech Republic c Fachbereich Chemie der Philipps Universität, D-35032 Marburg, Germany d Groupe d’Etudes de la Matière Condensée (ex- Laboratoire de Magnétisme et Optique), Université de Versailles Saint-Quentin, 78035 Versailles, France |
| Abstract: | Red or orange crystals of Co(NH3)6]2Cl2Fe(CN)6] · 4H2O (1), Co(en)3]2Cl2Fe(CN)6] · 2H2O (2) and Co(en)3]4Fe(CN)6]3 · 21.6H2O (3) were isolated from the aqueous systems Co3+-LN-Fe(CN)6]4− (LN = NH3, en = 1,2-diaminoethane). In all isolated samples the combination of Mössbauer (δ values were from the range −0.07 to −0.08 mm/s) and IR spectra (ν(C N) stretching vibrations in the range 2015-2047 cm−1) confirms the presence of low spin Fe(II) in Fe(CN)6]4− anions. X-ray structure analyses corroborate the ionic character of all studied compounds. These contain diamagnetic Co(NH3)6]3+ (1) or Co(en)3]3+ (2 and 3) complex cations and diamagnetic Fe(CN)6]4− complex anions. In compounds 1 and 2 chloride anions are present, too. All three compounds contain water of crystallization, in compound 3 as many as 21.6 molecules per formula unit. |
| Keywords: | Cobalt Iron Hexacyanoferrates Syntheses IR spectroscopy Mö ssbauer spectroscopy X-ray structure analysis |
| 本文献已被 ScienceDirect 等数据库收录！ | |