Crystal structure of lithium potassium tartrate monohydrate, LiKC4H4O6·H2O

Interplay between hydrogen bonding and metal coordination in alkali metal tartrates and hydrogen tartrates

The aggregation of tartaric acid anions in the solid state is based on a small set of standard O–H⋯O bond motifs.

Potassium sodium (2R,3R)-tartrate tetra-hydrate: the paraelectric phase of Rochelle salt at 105 K

Rochelle salt, K⁺·Na⁺·C₄H₄O₆²⁻·4H₂O, is known for its remarkable ferroelectric state between 255 and 297 K. The current investigation, based on data collected at 105 K, provides very accurate structural information for the low-temperature paraelectric form. Unlike the ferroelectric form, there is only one tartrate molecule in the asymmetric unit, and the structure displays no disorder to large anisotropic atomic displacements.