Eletronic and ressonance raman spectra of the hexanuclear cluster ' ['ru ind.3'O' ('O IND.2'cc'H IND.3') ind.6'' ((pyrazine) 'RU'' (N'h ind.3') IND.5') ind.3'] POT. 6+' - Toma, Henrique Eisi; Santos, Paulo Sérgio; Cipriano, C (Spectroscopy Letters, 1988)