Copper(II) cyanido-bridged bimetallic nitroprusside-based complexes: Syntheses, X-ray structures, magnetic properties, 57Fe 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-hexaazatricyclo[12.2.1.16,9]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.

Three heterobimetallic cyano-bridged copper(II) nitroprusside-based complexes of the general compositions of [Cu(L)Fe(CN)5NO]·xH2O, where L=N,N′‐bis(3-aminopropyl)ethylenediamine (complex 1), 1,3,6,9,11,14-hexaazatricyclo[12.2.1.16,9]-octadecane (complex 2) and N-methylethylenediamine (complex 3), were synthesized, and fully structurally and magnetically characterized. SEM, EDS, XRD and 57Fe Mössbauer experiments were used for characterization of thermal decomposition products of complexes 2 and 3.Figure optionsDownload as PowerPoint slide