L. Benes et al., PREPARATION AND PROBABLE STRUCTURE OF LAYERED COMPLEXES OF VANADYL PHOSPHATE WITH 1-ALKANOLS AND 1,OMEGA-ALKANEDIOLS, Inorganic chemistry, 36(13), 1997, pp. 2850-2854
The direct reaction of liquid (or melted solid) 1-alkanols or 1,omega-
alkanediols with solid finely ground VOPO4 . 2H(2)O in a microwave fie
ld leads to layered complexes of the composition VOPO4 . 2C(n)H(2n+1)O
H (n = 1-18) or VOPO4 . CnH2n(OH)(2) (n = 2-10), respectively. The res
ults of X-ray diffraction analysis show that the structures of all of
these polycrystalline complexes (intercalates) retain the original lay
ers of (VOPO4)(infinity). The molecules of alcohols are placed between
the host layers in a bimolecular way, being anchored to them by donor
-acceptor bonds between the oxygen atom of an OH group and a vanadium
atom as well as by hydrogen bonds. The molecules of diols, on the othe
r hand, using similar bonds, form, in monomolecular arrangement, bridg
es linking the, adjacent layers of the host. The aliphatic chains of b
oth intercalated alcohol and diol molecules possess all-trans configur
ations, and their axes are perpendicular to the host layers.