Collect. Czech. Chem. Commun. 2001, 66, 1490-1498

Synthesis, Crystal Structure and Magnetic Properties of Novel Complex [μ-(NC)-Fe(CN)3(NO)-μ-(CN)-Cu(ept)]n·4nH2O (ept = N-(2-Aminoethyl)propane-1,3-diamine)

Zdeněk Smékala,*, Jiří Kameníčeka, Ingrid Svobodab and Albert Escuerc

a Department of Inorganic and Physical Chemistry, Palacký University, 771 47 Olomouc, Czech Republic
b Fachbereich Materialwissenschaft, Technische Universität Darmstadt, 642 87 Darmstadt, Germany
c Departament de Química Inorgànica, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain


The novel complex [μ-(NC)-Fe(CN)3(NO)-μ-(CN)-Cu(ept)]n·4nH2O (ept = N-(2-aminoethyl)- propane-1,3-diamine) was obtained by the reaction of Cu(ClO4)2·6H2O with N-(2-amino- ethyl)propane-1,3-diamine and Na2[Fe(CN)5NO]·2H2O in water. This compound was characterized by IR, UV-VIS and EPR spectroscopies and magnetic measurement. Single-crystal X-ray structure analysis revealed that the title complex has a one-dimensional polymeric structure containing hexacoordinate iron(II) with five cyanide ligands (two of them, in trans position, bridging) and one nitrosyl group, and pentacoordinate copper(II) with N-(2-aminoethyl)propane-1,3-diamine and two sites occupied by bridging cyanide ligands. Magnetic investigation revealed a very weak antiferromagnetic interaction between the copper atoms (superexchange interaction parameter J = -1.7(1) cm-1; H = -JSiSi+1) within the chain through the diamagnetic [Fe(CN)5NO]2- ions.

Keywords: Copper(II); Iron(II); Cyanide-bridged complexes; Diamines; Nitroprussides; Cyanides; Magnetic properties; Crystal structure.

References: 23 live references.