Spectroscopic and theoretical studies of potassium sodium l-(+)-tartrate tetrahydrate and l-tartaric acid used as precursors for in situ laser-induced deposition of the catalytically active copper microstructures

Thermal transformations of bismuth (III) tartrates

“…The complex band with maxima at 1740 and 1720 cm -1 corresponds to the valence vibrations of the C=O bond of the unsubstituted carboxyl group [23]. These bands are absent in the spectra of carboxylic acid salts, but there are bands in the region of ~1550-1610 and ~1300-1400 cm -1 , respectively, related to asymmetric and symmetrical valence vibrations of ionized groups of COO - [24]. If in the examined compounds the tartrate anion associated with the bismuth cation has at least one non-dissociated group -COOH, bands in the ~1700 cm -1 region should be present in the IR absorption spectra of salt [25].…”