Phosphonic acid → HCID 178443265, compound

Participants

Reaction Conditions

Reaction Steps

n-Dodecyl thiouronium bromide (about 0.0495 mole) and hydrogen phosphonic acid (about 0.15 mole) were mixed and heated at about 90° C. to remove HBr. Water was added and the mixture was filtered (a nitrogen stream was used to remove oxygen). Approximately 12.4 g of the desired n-dodecyl thiouronium hydrogen phosphonate was isolated, m.p. 119°-122° C. The compound was re-precipitated from ethanol and water. The IR data were consistent with HPO-3 as the counterion, i.e., strong bands near 1195 cm-1, 1145 cm-1, 1097 cm-1, 991 cm-1 and 927 cm-1. A sharp band was also observed at 2380 cm-1 which is characteristic of the P-H linkage.

Provenance & Evidence