SPECTRAL STUDY OF THE STRUCTURE OF COMPARTMENTAL COMPLEXES OF EUROPIUM AND COPPER

Compartmental complexes [EuH2(fsa)(2)en]Cl . 3H(2)O and [CuH2(fsa)(2)e n]-0.5H(2)O have been synthesized and characterized. The compartmental ligand (H-4(fsa)(2)en) is N,N'-bis(3-carboxysalicy-lidene)ethylenedia mine. Spectral study indicates that Eu(III) and Cu(II) are coordinated by the -O2O2 coordinating atoms (outside) and the -N2O2 coordinating atoms (inside), respectively. Since there is a considerable difference in the li and field strength between the ''outside'' and ''inside'' c oordination spheres, their different fluorescence properties have been investigated by photoacoustic spectroscopy and fluorescence spectrosc opy. (C) 1998 Elsevier Science B.V.