Synthesis and structural characterisation of a cyano-bridged trinuclear complex [(CuL)(2)Fe(CN)(6)][ClO4]center dot 2CH(3)OH center dot H2O

The trinuclear complex [(CuL)(2)Fe(CN)(6)][ClO4]. 2CH(3)OH .H2O [L=N,N ' -b is(2-pyridyl imine)propane-1,3-diamine] has been prepared and characterised by spectroscopic, elemental analysis, room temperature magnetic moment and single crystal X-ray analysis. Both copper(II) ions have a distorted squar e pyramidal geometry and are trans to each other, linked via cyanide bridge s to the iron(III) centre. At the Cu(1) copper centre there is disorder bet ween flattened chair and boat conformations in the saturated chelate ring. Of the six CN- groups around the octahedral iron(III) centre, four are term inal and the remaining two are coordinated to the [Cu(L)](2+) moieties, giv ing nonlinear Fe-Ca dropN-Cu linkages. (C) 2001 Elsevier Science Ltd. All r ights reserved.