Copper(II) cyanido-bridged bimetallic nitroprusside-based complexes: Syntheses, X-ray structures, magnetic properties, Fe Mössbauer spectroscopy and thermal studies

Three heterobimetallic cyanido-bridged copper(II) nitroprusside-based complexes of the compositions Cu(tet)Fe(CN)₅NO]·H₂O (1), where tet=N,N′‐bis(3-aminopropyl)ethylenediamine, Cu(hto)Fe(CN)₅NO]·2H₂O (2), where hto=1,3,6,9,11,14-hexaazatricyclo12.2.1.1^6,9]octadecane and Cu(nme)₂Fe(CN)₅NO]·H₂O (3), where nme=N-methylethylenediamine, were synthesized and characterized by elemental analyses, ⁵⁷Fe Mössbauer and FTIR spectroscopies, thermal analysis, magnetic measurements and single-crystal X-ray analysis. The products of thermal degradation processes of 2 and 3 were studied by XRD, ⁵⁷Fe Mössbauer spectroscopy, SEM and EDS, and they were identified as mixtures of CuFe₂O₄ and CuO.