“phosphonium”的英文意思_释义_用法

单词

phosphonium

释义

phosphonium Chem.|fɒsˈfəʊnɪəm|
[f. phosphorus + ending of ammonium.]
A combination of hydrogen and phosphorus, PH₄, analogous to ammonium, entering as a monovalent radical into many compounds, as phosphonium iodide, PH₄I; also applied to compounds in which the hydrogen is replaced by organic radicals, as tetramethylphosphonium, P(CH₃)₄, tetrethylphosphonium, P(C₂H₅)₄, methyltriethylphosphonium, P(CH₃)(C₂H₅)₃, etc.
1866–77Watts Dict. Chem. IV. 607 Monophosphoniums, of the type R₄PI, analogous to iodide of tetrethylammonium.Ibid. 615 (heading) Ethylphosphoniums.Ibid. 620 Diphosphoniums.1871Roscoe Elem. Chem. xxxi. 339 Obtained..by acting upon phosphonium iodide, PH₄I, with ethyl iodide in presence of zinc oxide.
Hence phosˈphonic a. [cf. sulphonic], in phosphonic acid, any one of several compounds derived from phosphoric acid by the replacement of hydroxyl (OH) by a hydrocarbon group: e.g. benzene phosphonic acid, C₆H₅.P(OH)₂O. Sometimes called phosphinic, or phosphenilic acid.

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