| 释义 |
▪ I. osmic, a.1 Chem.|ˈɒsmɪk, ˈɒz-|
[f. osmi-um + -ic.]
Containing osmium: applied to compounds in which osmium is quadrivalent, as osmic chloride OsCl4, osmic oxide OsO2; osmic acid, (a) a name given to osmium tetroxide OsO4; (b) the acid H2OsO4, known chiefly in the form of its salts (osmates).
1842T. Graham Elem. Chem. 692 Osmic acid, OsO4, or the volatile oxide of osmium is best obtained by the combustion of osmium in a glass tube through which a stream of oxygen gas is passed [etc.]. 1873Watts Fownes' Chem. (ed. 11) I. 440 Osmic chloride, OsCl4, is the red compound obtained by igniting osmium in chlorine gas. 1877W. Thomson Voy. Challenger I. i. 17 A very weak solution of osmic acid is of great value for killing and hardening small gelatinous animals for microscopic preparations. 1879Roscoe & Schorlemmer Treat. Chem. II. ii. 458 In addition to these the salts of osmic acid, H2OsO4, are known, but neither the acid nor the corresponding oxide, OsO3, have been prepared. 1936J. W. Mellor Comprehensive Treat. Inorg. & Theoret. Chem. XV. lxxii. 705 H. Moraht and C. Wischin obtained a black substance by the action of heat on a mixture of potassium osmate and nitric acid... [They] found that when dried over phosphorus pentoxide, in vacuo, its composition corresponds with the hydrate, OsO3.H2O, or osmic acid, H2OsO4. O. Ruff and K. Bornemann could not confirm the analysis. 1950N. V. Sidgwick Chem. Elements II. 1499 Hexavalent osmium... There are two binary compounds..and a considerable number of complex salts, all of which are in some sense derivatives of osmic acid H2OsO4.
▪ II. osmic, a.2|ˈɒzmɪk|
[f. Gr. ὀσµή smell, odour + -ic.]
Of or pertaining to odours or the sense of smell. Hence ˈosmically adv. Cf. osmics n. pl.
1938G. M. Dyson in Chem. & Industry XVI. 647/1 When the mucus linings are inflamed and covered with thickened mucus..the ability to smell will be considerably diminished..by reason of the osmic sensory processes being cut off from access to the air. Ibid. 648/1 Certain chemical groups and configurations..lead to the development of intra-molecular frequencies capable of affecting the osmic sensory processes. These are referred to, subsequently, as the osmic frequencies. 1964Ann. N.Y. Acad. Sci. CXVI. 557 If this can be confirmed, it will help to define a lower limit to the range of ‘osmic frequencies’. 1966Nature 5 Feb. 551/1 The osmic properties that have been identified are the non-specific ones. They do not correlate with particular odours such as those of rose..or peppermint. The fact is that the osmically specific properties of odorous substances have still not been securely identified. |