Solid-State NMR of H3PW12O40·nH2O and H3PW12O40·6C2H5OH
Yuji Kanda(Sumitomo Chemical (Japan)), Kwan Young Lee(State Key Laboratory of Synthetic Chemistry), Shinichi Nakata(Sanyo (Japan)), Sachio Asaoka(Sanyo (Japan)), Makoto Misono(State Key Laboratory of Synthetic Chemistry)
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Abstract
Abstract High-resolution solid-state 1H and 31P NMR revealed that there were at least three different states for protons of H3PW12O40·nH2O; (i) protons present in highly hydrated samples, (ii) protonated water which is hydrogen-bonded to terminal oxygen, W = O···H+ (H2O)2 (n \doteqdot 6), and (iii) proton which is directly bonded to bridging oxygen, W–OH–W (n \doteqdot 0). When water was replaced by ethanol, a protonated ethanol species was detected by 1H, 13C, and 31P NMR.
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