Salen-type heteronuclear 3d-4f complexes engineering by anion PF6 with near-infrared (NIR) and luminescent properties

Two heteronuclear 3d-4f complexes obtained by salen-type ligand N,N'-bis(2-hydroxy-3-methoxybenzylidene)-1,3-diaminopropane (H2L1) and N,N'-bis(2-hydroxy-3-methoxy benzylidene)-1,2-diaminohexane (H2L2) have been isolated. They are co-crystallized complex [Yb(ZnL1)(OAc)(2)(H2O)]center dot[Yb(ZnL1)(OAc)(3)]center dot PF6 center dot CH3OH (1), trinuclear complex [Sm(ZnL2)(2)Cl-2(H2O)(2)]center dot PF6 (2). In complexes 1 and 2 the anion PF6 called counteranion is not only a role to neutralize overall charge in the solid but also to regulate frameworks. The complexes were structurally characterized by single crystal X-ray crystallographic studies and their photophysical properties were investigated (C) 2012 Elsevier B.V. All rights reserved.