closoadj.

/ˈkləʊzəʊ/

Forms: Usually italicized.

Etymology: Alteration (after closed ) of clovo (J. R. van Wazer 1958, in Phosphorus & its Compounds I. iii. 89), < Greek κλωβός cage: see -o- connective.

Chemistry.

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.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > boron > [adjective] > compound structure or naming form

closo1967

nido1967

1967 Office 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.

1968 Inorganic 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.

1968 Inorganic Chem. VII. 1947/2 The prefix clovo- derived from the Greek word for cage was changed to closo- at the request of the IUPAC Inorganic Nomenclature Commission.

1971 Inorgan. Chem. 10 214/2 All these structures may also be derived from the parent polyhedral series by a similar repetition of the process by which the nido structures..were generated from the closo structures.

1976 Adv. Inorg. Chem. & Radiochem. 18 4 There are three main structural types, closo, nido and arachno.

1984 N. N. Greenwood & A. Earnshaw Chem. of Elements (1986) vi. 182 It is a general feature of closo-B_nH_n²⁻ anions that there are no B—H—B or BH₂ groups.

This entry has not yet been fully updated (first published 1993; most recently modified version published online June 2018).

单词	closo
释义	closoadj. /ˈkləʊzəʊ/ Forms: Usually italicized. Etymology: Alteration (after closed ) of clovo (J. R. van Wazer 1958, in Phosphorus & its Compounds I. iii. 89), < Greek κλωβός cage: see -o- connective. Chemistry. 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. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > boron > [adjective] > compound structure or naming form closo1967 nido1967 1967 Office 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. 1968 Inorganic 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. 1968 Inorganic Chem. VII. 1947/2 The prefix clovo- derived from the Greek word for cage was changed to closo- at the request of the IUPAC Inorganic Nomenclature Commission. 1971 Inorgan. Chem. 10 214/2 All these structures may also be derived from the parent polyhedral series by a similar repetition of the process by which the nido structures..were generated from the closo structures. 1976 Adv. Inorg. Chem. & Radiochem. 18 4 There are three main structural types, closo, nido and arachno. 1984 N. N. Greenwood & A. Earnshaw Chem. of Elements (1986) vi. 182 It is a general feature of closo-B_nH_n²⁻ anions that there are no B—H—B or BH₂ groups. This entry has not yet been fully updated (first published 1993; most recently modified version published online June 2018). < adj.1967
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