单词 | nitrosyl |
释义 | nitrosyln. Chemistry. The group —N=O; the cation NO+. Also: a complex containing nitric oxide (NO) bonded to a metal atom as a neutral ligand. Frequently attributive. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > nitrogen > [noun] > groups nitrosyl1864 1864 Chem. News 2 Apr. 162/2 The author concludes by stating a general rule to the effect that any nitro-compound heated to 100°C with hydriodic acid..will have its ‘nitryl’ converted into nitric oxide (NO), or into ‘nitrosyl’ or amide (NH2). 1866 H. Watts Dict. Chem. IV. 116 Nitrosyl or Azotyl. The name of nitric oxide in combination. 1880 E. Cleminshaw tr. C. A. Wurtz Atomic Theory 264 This is the case..with nitrogen dioxide or nitrosyl. 1950 N. V. Sidgwick Chem. Elements I. 685 The nitrosyls resemble the carbonyls..in many ways, but have NO in place of CO. 1966 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. II. xxvii. 336 Nitrosyl complexes will not be described..as they bear a formal resemblance to the carbonyls. There are very few pure nitrosyls. 1984 N. N. Greenwood & A. Earnshaw Chem. of Elements (1986) xi. 507 Nitrogen forms two series of oxohalides—the nitrosyl halides XNO and the nitryl halides XNO2. 1993 Science 6 Aug. 728/1 A deeper understanding of the generation of NO and the chemistry of inorganic nitrosyl compounds may lead to more effective nitrovasodilators. Compounds nitrosyl chloride n. a reactive orange-yellow gas with oxidizing properties, ClNO, made by reaction of chlorine and nitric oxide. ΚΠ 1875 C. L. Bloxam Chem. (ed. 3) 171 Nitrosyle chloride is also produced by mixing 2 volumes of nitric oxide with 1 volume of chlorine. 1919 Science 21 Feb. 179 Some atoms still retain their position or negative character in their compounds. This was first definitely pointed out for nitrogen trichloride, in which the chloride is positive, as contrasted with nitrosyl chloride, NOCl, in which it is clearly negative. 1990 Philos. Trans. (Royal Soc.) A. 333 45 The nitrite ion in a mixture of the two ions is removed by volatilization as nitrosyl chloride. nitrosylhaemoglobin n. a complex formed by the reaction of haemoglobin with nitric oxide. ΚΠ 1969 Jrnl. Chem. Physics 51 4220/2 Whereas oxyhemoglobin is diamagnetic, nitrosylhemoglobin is paramagnetic. 1997 Nephrol., Dialysis, Transplantation 12 292 A constant increase in nitrosylhaemoglobin levels was observed early in haemodialysis. nitrosylmyoglobin n. a complex formed by the reaction of myoglobin with nitric oxide, responsible for the pinkish colour of meat cured with nitrite. ΚΠ 1971 Jrnl. Amer. Chem. Soc. 93 5036 (title) An electron paramagnetic resonance study of nitrosylmyoglobin. 1986 K. J. Carpenter Hist. Scurvy & Vitamin C (1988) ix. 210 The meats also developed an attractive, characteristic pink color, which resulted from a complex reaction between the nitrite and the muscle protein to form nitrosylmyoglobin. nitrosylsulphuric acid n. a crystalline acid, HO.SO2.ONO, which forms as an intermediate during the manufacture of sulphuric acid by the lead chamber process and is used (in sulphuric acid solution) for bleaching cereal milling products and for dye manufacture. ΚΠ 1893 V. H. Veley in Proc. Royal Soc. 52 39 The process is based on the observations of Lunge that nitrous fumes give under these conditions nitrosyl sulphuric acid. 1935 Proc. Royal Soc. 149 327 Apart from the large amount of research undertaken to prove the existence of nitrosylsulphuric acid as an intermediate product in the manufacture of sulphuric acid by the lead chamber process, many researches have been made to determine the composition and constitution of the molecule. 1999 Encycl. Brit. Online (Version 99.1) at Venus The dominant material that has been identified in the clouds [of Venus] is highly concentrated sulfuric acid... Other materials that may exist include solid sulfur and nitrosylsulfuric acid. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < |
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