[1] UNIV MILAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALY
[2] UNIV MILAN,DIPARTIMENTO CHIM FIS & ELETTROCHIM,I-20133 MILAN,ITALY
[3] CNR,CTR STUDIO RELAZ STRUTTURA & REATTIV CHIM,I-20133 MILAN,ITALY
[4] POLITECN MILAN,DIPARTIMENTO CHIM,I-20133 MILAN,ITALY
[5] CNR,IST POLAROG & ELETTROCHIM PREPARAT,I-35020 PADUA,ITALY