| 释义 |
closo, a. Chem.|ˈkləʊzəʊ|
Usu. italicized.
[Alteration (after closed) of clovo (J. R. van Wazer 1958, in Phosphorus & its Compounds I. iii. 89), f. Gr. κλωβός cage: see -o1.]
Designating (the structure of) a boron compound in whose molecules boron atoms occupy all the vertices of a notional triangulated polyhedron. Also (with hyphen) as a word-forming element.
1967Office of Naval Res. Techn. Rep. (Aerojet-General Corp.) No. 15. 1 Until very recently,..the only good method of synthesizing these closo-compounds was via the nido-carborane, C2B4H8 . 1968Inorganic Chem. VII. 1947/2 Some members of the second class have structures very close to a closed structure. When it is desirable to indicate this situation in contrast to a known closo compound, the italic prefix nido- is used. Ibid., The prefix clovo- derived from the Greek word for cage was changed to closo- at the request of the IUPAC Inorganic Nomenclature Commission. 1971,1976[see *nido a.]. 1984Greenwood & Earnshaw Chem. of Elements (1986) vi. 182 It is a general feature of closo-BnHn2- anions that there are no B–H–B or BH2 groups. |