RbV3P4O17+x (x = 0.14): A Novel Mixed-Valence Vanadium Pyrophosphate

K. H. Lii*, Chi-Shen Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

A novel mixed-valence vanadium pyrophosphate, RbV3P4O17+x (x = 0.14), was discovered, and its structure was determined from single-crystal X-ray diffraction data. This nonstoichiometric phase crystallizes in the tetragonal space group P42/mnm with a = 13.651 (2) Å, c = 7.289 (2) Å, V = 1358.3 (4) Å3, Z = 4, R = 0.0366, and Rw = 0.0360 for 835 unique reflections with I > 2.5σ(I). The structure may be regarded as built from ReO3-type infinite chains along the c axis (in which each VO6 octahedron shares two opposite vertices) and finite chains parallel to the (110) directions, which are linked by P2O7 groups to form a three-dimensional structure. Each finite chain consists of four V06 subunits. The oxygen atom shared between the central and side octahedra in the four-membered chain is about two-thirds occupied. Variable-temperature powder magnetic susceptibility data suggest the presence of two V4+ and one V5+ per formula unit and support the formula determined from single-crystal X-ray diffraction data.

Original languageEnglish
Pages (from-to)3298-3301
Number of pages4
JournalInorganic Chemistry
Volume29
Issue number18
DOIs
StatePublished - 1 Sep 1990

Fingerprint Dive into the research topics of 'RbV<sub>3</sub>P<sub>4</sub>O<sub>17+x</sub> (x = 0.14): A Novel Mixed-Valence Vanadium Pyrophosphate'. Together they form a unique fingerprint.

  • Cite this