单词 | oxazine |
释义 | oxazinen. Chemistry. Any of a class of compounds whose molecules contain a ring of one nitrogen, one oxygen, and four carbon atoms, some of which are used as dyes; spec. a monocyclic compound with this structure and the formula C4H5NO. ΘΚΠ the world > matter > chemistry > organic chemistry > organic compounds > [noun] > cyclic compounds triazole1888 oxazine1889 triazine1894 ozonide1904 1889 Jrnl. Soc. Chem. Industry 31 Dec. 1004/2 The colouring matters obtained from the chromogen..are called oxazines. Widman defines oxazines or azoxines as bodies containing a ring of six atoms: one nitrogen atom, one oxygen atom, and four carbon atoms, which are joined by eight bonds of affinity. 1928 C. E. Mullin Acetate Silk & its Dyes x. 140 The thiazine dyes, such as Methylene Blue, are not usually so satisfactory; but the oxazine dyes, which contain an atom of oxygen in place of the sulfur atom present in the thiazine dyes, are useful. 1978 M. Sainsbury in S. Coffey Rodd's Chem. Carbon Compounds (ed. 2) IV. h. xli. 427 Oxazines are six-membered monocyclic structures of the general molecular formula C4H5NO. Depending upon the relative orientation of the oxygen and nitrogen atoms and the disposition of the double bonds in the heterocycle nine isomeric forms are possible. 1995 Proc. National Acad. Sci. U.S.A. 92 12008/2 A..flash-lamp-pumped dye laser, with oxazine 720 perchlorate..as the laser dye, was used for photolysis. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.1889 |
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