Yg. Chen et al., SYNTHESIS, PROPERTIES AND CRYSTAL-STRUCTURE OF A HETEROPOLY COMPOUND CONTAINING TITANIUM, Transition metal chemistry, 22(4), 1997, pp. 356-359
K4H2CoW12O40. 2Ti02 . 9H(2)O crystallizes from an aqueous solution of
Na2WO4, Co(OAc)(2) and Ti(SO4)(2). The compound has very similar i.r.
and u.v. spectra to those of [CoW12O40](6-) and [CoW11TiO40](8-) but i
ts polarographic behaviour is different from that of [CoW11TiO40](8-)
and exhibits only reduction of tungsten(VI). A single crystal structur
al analysis indicates that this compound consists of the heteropolyani
on [CoW12O40](6-), titanium-oxygen chain, potassium ions and water mol
ecules.