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Figure 9
Coordination spheres of selected Na atoms in the structure of Na(sac)(15/8)H2O. Sodium cations Na2 and Na6 are octahedrally coordinated by oxygen atoms from saccharinate anions and from water molecules. Sodium atom Na2′ is an isolate (occurring once in the asymmetric unit of the supercell). It demonstrates a special case where the cation is coordinated by four oxygen atoms and two nitrogen atoms from the saccharinate anion.

IUCrJ
Volume 8| Part 1| January 2021| Pages 139-147
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520015912