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picryl Chem.|ˈpɪkrɪl, ˈpɪkraɪl|
[f. Gr. πικρ-ός bitter, or immed. f. picr-ic + -yl.]
†1. Also picril, picryle. [a. F. picryle (A. Laurent 1844, in Rev. sci. et industr. XVIII. 201).] (See quot. 1866.) Obs.
1847W. Gregory Outl. Chem. (ed. 2) 546 Picrine, Syn. Picryle, C42H15NO4, is formed when the mass produced by acting on oil of bitter almonds by sulphuret of ammonium is distilled. 1858H. Watts tr. Gmelin's Hand-bk. Chem. XII. 188 Picril dissolves very readily in ether. 1866― Dict. Chem. IV. 644 Picryl or Cripin, a substance formed, together with others, by submitting to dry distillation the crude product of the action of sulphydrate of ammonium on bitter-almond oil... Picryl is also used as synonymous with trinitrophenyl, C6H2(NO2)3, the radicle of picric acid.
2. The 2,4,6-trinitrophenyl group, {b1}C6H2(NO2)3, contained in picric acid.
1866[see sense 1]. 1875Jrnl. Chem. Soc. XXVIII. 165 Metanitraniline and picryl chloride act on one another when dissolved in boiling absolute alcohol. 1877Ibid. XXXII. 758 It is..very possible that in one of the resulting compounds the two picryl groups may be identical. 1889G. M'Gowan tr. Bernthsen's Text-bk. Org. Chem. xxiii. 385 Picryl chloride, C6H2(NO2)3Cl.., resembles the acid chlorides..in behaviour. 1937F. C. Whitmore Org. Chem. 737 Picryl iodide is a stable yellow crystalline product obtainable from the chloride and KI. 1964J. W. Linnett Electronic Struct. Molecules vii. 107 The reason why the diphenyl picryl compound is more stable than the triphenyl compound is presumably that the picryl group relieves the adjacent nitrogen atom of some of the negative charge. 1975Nature 3 Jan. 72/2 The lymph node cells of mice rendered unresponsive by the injection of picryl sulphonic acid (PSA) depress the passive transfer of contact senstivity. |