Id. Williams et al., AN ORGANOTEMPLATED VANADIUM(IV) BORATE POLYMER FROM BORIC-ACID FLUX SYNTHESIS, [H(2)EN](4)[HEN](2)[V6B22O53H8]CENTER-DOT-5H(2)O, Chemical communications, (22), 1998, pp. 2463-2464
A new 1-D inorganic chain polymer [H(2)en](4)[Hen](2)[V-6-B22O53H8].5H
(2)O, consisting of [V6B20O50H6] cluster subunits linked together thro
ugh diborate bridges, has been synthesised with high yield and purity
by a molten boric acid 'flux' method in which V2O5, en and H3BO3 (1 :
6 : 25)were heated together at 180 degrees C for 3 days; the clusters
have a central band of six square-pyramidal V-IV=O vanadyl groups, whi
ch are capped top and bottom by two raft-like polyborate ligands of fo
rmula [B10O16H3].