phosphonicadj.
/fɒsˈfɒnɪk/, U.S. /fɑsˈfɑnɪk/ Chemistry.
Originally: †of phosphonium (obsolete rare). Now: derived from a phosphonic acid.
ΚΠ
1876 H. E. Armstrong Introd. Study Org. Chem. v. 121 (note) The hydrocarbon was enclosed in glass tubes with phosphonic iodide, PH4I.
1966 Biochimica et Biophysica Acta 125 548 A pure cephalin fraction, consisting of phosphatidylethanolamine and its phosphonic analogue.., has been isolated from this species.
1995 Chem. in Brit. Oct. 784/1 The first step in Sarin manufacture was producing the precursor methyl phosphonic chloride.
Compounds
phosphonic acid n. any organic acid derived from phosphorous acid (HPO(OH)2); spec. an acid having the formula RPO(OH)2, where R is an alkyl or other organic group. Also: phosphorous acid.
ΚΠ
1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 114 Unsymmetrical phosphorous acid yields acid ethers called phosphonic acids,..which are formed by the action of nitric acid on the primary phosphines.
1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) iv. 118 CH3·PH2, with nitric acid, yields CH3·PO·(OH)2, methyl phosphonic acid.
1950 N. V. Sidgwick Chem. Elements I. 741 By the esterification of ethyl phosphonic acid..an isomeric ester is formed.
1989 R. Dryer & G. Lata Exper. Biochem. i. xi. 292 The first method uses various substituted phosphochloramidates, in which the phosphorus is trivalent since the compounds are derivatives of phosphonic acid.
2000 New Scientist 7 Oct. 7/3 A small dose of alkyl phosphonic acid esters stops the oils foaming and carboxyl-containing polymers stop the mix staining clothes.
This is a new entry (OED Third Edition, March 2006; most recently modified version published online March 2022).
<
adj.1876