Self-assembled All-inorganic Chiral Polyoxovanadate : Spontaneous Resolution of Nitrate-incorporated Octadecavanadate
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A chiral octadecavanadate has been isolated and optically resolved into enantiomers by spontaneous resolution. From the partial oxidation reaction of a reduced decavanadate [V<SUB>10</SUB>O<SUB>26</SUB>]<SUP>4−</SUP> with nitric acid, a chiral octadecavanadate encapsulating a nitrate template was formed. A nitrate anion was incorporated at the center of the spherical polyoxovanadate cage. The structure may be regarded as a double helical V8 ribbon between two square pyramidal V<SUP>VI</SUP>O<SUB>5</SUB> units, consisting of half-pitch helix with ca. 11.0 Å diameter and a half pitch length of 8 Å.
- Chemistry Letters
Chemistry Letters 37(6), 578-579, 2008-06-05
The Chemical Society of Japan