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![[Figure 4]](sk3622fig4mag.jpg)
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Figure 4
Comparison of the geometry of the anions and zwitterions of (a) cAMP and (b) cIMP of (I), (II) and (V) and deposited in the CSD, along with (c) two cNMPs with the same sugar puckering and different deformation of the O/P/O/C/C/C ring. Most of the H atoms have been omitted for clarity. Intramolecular C—H⋯N hydrogen bonds are shown with dashed lines. The common reference points are the O4′, C1′ and C2′ atoms. [For ZOXVOX (Iverson et al., 1996  ), an inverted model has been used.] |
![[Figure 4]](sk3622fig4.jpg)
 | STRUCTURAL CHEMISTRY |
ISSN: 2053-2296
