Sy. Zhang et al., THE NEW EXPERIMENTAL-EVIDENCE FOR PROTONA TIONAL SITE OF HETEROPOLY BLUE - INVESTIGATION BY IN-SITU FTIR SPECTROELECTROCHEMICAL METHOD, Gaodeng xuexiao huaxue xuebao, 18(6), 1997, pp. 955-957
The electrochemical reduction processes of heteropolyanion PMo12O403-
in protonic media were investigated by in-situ FTIR spectroelectrochem
ical method. Experimental results indicated that the protonational sit
e of electroreduction product HnPMo12O403- (n=2, 4, 6, 8) was on bridg
e oxygen atom, The infrared characteristic absorption peaks of Mo = O
double bound shift to higher frequence after electroreduction of heter
opolyanion PMo12O403-. This result can be interpreted from the viewpoi
nt of induction effect of proton.