单词 | phosphine |
释义 | phosphinen. Chemistry. 1. A colourless, foul-smelling, poisonous gas, PH3, which is analogous to ammonia and when impure is often spontaneously flammable in air. Cf. phosphane n. ΚΠ 1857 A. W. Hofmann & A. Cahors in Philos. Trans. (Royal Soc.) 147 577 The products of these reactions, the bases Me3P and E3P, which we propose to call respectively trimethylphosphine and triethylphosphine, remain united with chloride of zinc.] 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 233 Phosphine..is analogous in some of its chemical relations to ammoniacal gas. 1922 F. W. Aston Isotopes vi. 77 The gases phosphine PH3 and arsine AsH3 were used in the experiments on these elements. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) iv. 51 Acetylene..is usually found to contain small quantities of phosphine PH3 (owing to the presence of calcium phosphide in the carbide), which gives the gas an objectionable smell. 1995 Chem. in Brit. June 432/3 Babies' damp warm bodies encourage fungi to grow on the cot mattress,..causing the mattress to biodeteriorate and release toxic trihydride gases, such as phosphine, arsine and stibine. 2. Any substituted derivative of PH3, analogous to an amine. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > phosphorus > [noun] > compounds > other phosphonium1859 phosphine1870 phosphonitrile1921 phosphorane1952 tepa1953 phosphosilicate1964 1870 J. P. Cooke First Princ. Elem. Chem. 256 Other radicals yielding compounds similar to the tertiary amines, which we call the phosphines. 1898 G. M'Gowan tr. E. von Meyer Hist. Chem. (ed. 2) 469 The phosphines and phosphonium bases first became known through the classical and comprehensive researches of A. W. Hofmann. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) iv. 118 Primary and secondary phosphines are formed by heating phosphonium iodide and an alkyl iodide with zinc oxide. 1981 P. Sykes Guidebk. to Mechanism in Org. Chem. (ed. 5) viii. 229 These species are generated by the reaction of an alkyl halide..on a trialkyl- or triaryl-phosphine. 1992 New Scientist 24 Oct. 17/1 Phosphines stabilise a low oxidation state because, as they bond to a metal, they pump electrons back to the metal atom by forming a ‘back-bond’ to the metal. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.1868 |
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