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![[Figure 2]](ta1503fig2mag.jpg)
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Figure 2
The atom-numbering scheme for the two centrosymmetric half-PDA2+ cations (A and B) and the 5-SSA2− anion in (II) ![[link]](../../../../../../logos/arrows/c_arr.gif) (30% probability displacement ellipsoids). The intramolecular hydrogen bond is shown as a dashed line. [Symmetry codes: (v) −x, −y, −z + 1; (ix) −x + 1, −y + 1, −z.] |
![[Figure 2]](ta1503fig2.jpg)
 | STRUCTURAL CHEMISTRY |
ISSN: 2053-2296
