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![[Figure 2]](br1307fig2mag.jpg)
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Figure 2
ORTEPIII (Burnett & Johnson, 1996  ) views of different pyrophosphate groups: (a) shows a normal bent P2O7 group, while (b) and (c) show two kinds of statistical disorder on the threefold symmetry axis. Displacement ellipsoids are drawn at the 80% probability level. [Symmetry codes: (i) 1 − x, −y, −z; (ii) 1 − z, 1 − x, −y; (iii) z + ½, −x + ½, −y; (iv) 1 − z, −x, −y; (v) 1 − z, x − ½, −y + ½; (vi) y + ½, −z + ½, 1 − x; (vii) z + ½, x, −y + ½; (viii) x + ½, y, −z + ½; (ix) y + ½, z, −x + ½; (x) −z + ½, x − ½, y; (xi) −y + ½, −z, x − ½.] |
![[Figure 2]](br1307fig2.jpg)
 | STRUCTURAL CHEMISTRY |
ISSN: 2053-2296
