A New Vanadium Oxide Bronze: [NH3(CH2)6NH3]10[V15O37(Cl)]2[V15O36(Cl)](OH)3 (H2O)3 with Clusters [V15O36(Cl)]5- and [V15O37(Cl)]6- Textured by Diaminohexane

New praseodymium intergrowth tungsten bronzes, PrxWO3, of (n)-ITB structure type have been prepared by solid state reaction at P=50 kbar and T=1570 K. The ordered members n=2, 3, and 4 were identified by high-resolution transmission electron microscopy. The structure of (2)-ITB was deduced from an electron micrograph, and the unit cell parameters were determined from the X-ray powder data: a=10.17 ?, b=7.418 ?, and c=3.790 ?. The praseodymium content (0.04