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Figure 6
Displacement ellipsoid plot with difference electron density after refinement of the carbonate ion as a `nitrate' in 2 (using the SHELXLE GUI for SHELXL; Hübschle et al., 2011BB9). The large thermal parameters for the central atoms, compared to neighbouring oxygen atoms, indicates insufficient available electron density for the presence of a `nitro­gen' atom. The difference electron-density mesh setting used is 0.28 e Å−3.

ISSN: 2056-9890
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