Heteropolytungstates containing an organotin moiety plus Co or Zn as c
entral atom, M6H[XW11O39SnPh] . nH(2)O (M = Me4N or Bu4N; X = Zn or Co
) were prepared and characterized by elemental analysis, i.r., u.v.-vi
s. spectroscopy, e.s.r. and n.m.r. spectroscopy and electrochemistry.
The results show that these two anions possess Keggin-like structures.