Solid-state nuclear magnetic resonance study of a series of phosphonic and phosphinic acids

Combined ab initio computational and experimental multinuclear solid‐state magnetic resonance study of phenylphosphonic acid

“…The 31 P CP/MAS spectrum of phenylphosphonic acid shows a signal arising from a single site at 22.3 ppm, in good agreement with previously reported experimental results 22 and ab initio calculations (Table 4). Moreover, the static spectrum (Fig.…”

Phosphorylation of lignin: characterization and investigation of the thermal decomposition

“…phosphonate structures. 27,28 So phosphorus exhibits a new chemical environment, and therefore appears to interact with lignin. Reduction of phosphates (+V) in phosphonates (+III) is possible and well documented in the literature, 29,30 however standard protocols require strong basic media and specic conditions, which are obviously not fullled in this system.…”

Preparation of 1‐hydroxyethylidene‐1,1‐diphosphonic acid‐intercalated layered double hydroxide and its physicochemical properties

“…25 However, a small shoulder peak, attributable to impurity, was observed at À5 ppm. The 31 P MAS NMR spectrum of HEDP-intercalated LDH showed a small highfield shift; the signal at 20 ppm for HEDP in aqueous solution 26 shifted to doublets at 15 and 16 ppm due to solid effects. This result similarly suggests that the structure of HEDP remained intact (no decomposition) after the intercalation reaction.…”