Other articles where Arachno-borane is discussed: borane: Structure and bonding of boranes: …with one missing vertex; (3) arachno- (Greek, meaning "spider's web"), clusters that are even more open, with boron atoms occupying n contiguous corners of an (n + 2)-cornered polyhedron—i.e., a closo-polyhedron with two missing vertices; (4) hypho- (Greek, meaning "to weave" or "a net"), the most open clusters, …
Example sentences with "arachno-borane", translation memory Giga-fren The energies, geometries, and charge distributions of the closo-, nido-, and arachno - boranes and closo-carboranes are determined in SCF calculations using a contracted (9s,5p) basis set of Huzinaga, supplemented with polarization functions.
cheminform abstract: is the closo, nido, or arachno classification for boranes a function of the topological description of the molecule. R. W. RUDOLPH Chemischer Informationsdienst 1978 9 (31),
These hydrides of boron are called boranes.These hydrides can be divided into several series: 1)BnHn+4 (called nido borane) such as B2H6 (diborane), B5H9 (pentaborane), B6H10 (hexaborane), B8H12 (octaborane), B10H14 (decaborane).
A Classi cation Scheme For Polyhedral Borane Clusters. Classi cation of structural types can often be done more conveniently on the basis of valence electron counts. Most classi cation schemes are based on a set of rules formulated by Prof. Kenneth Wade, FRS, in 1971. 5.03 Lecture 6 Polyhedral Boranes and Wade's Rules.
PDF | The electronic structure of the butterfly-shaped arachno-borane B4H10 is rationalized by the octet rule in comparison with its butterfly-shaped isoelectronic species C4H6.
Examples of nido and arachno- carboranes include 2,3-C 2 B 4 H 8 and 1,3-C 2 B 7 H 13, respectively. Geometrical isomers of carboranes can exist, necessitating the use of the numerical prefixes in a compound's name; this is illustrated by the 1,2-, 1,7-, and 1,2-C …
Generic formula of boranesEdit. There also exists a series of substituted neutral hypercloso- boranes that have the theoretical formulae B n H n. Examples include B 12 (OCH 2 Ph) 12, a derivative of the unstable hypercloso- B 12 H 12.
The results indicate that the electronic structure of arachno-borane B4H10 can be rationalized by the octet rule constrast with its isoelectronic hydrocarbon counterpart C4H6.
chemical bonding. In chemical bonding: Boranes …like untidy birds' nests (the nido-boranes), and some resembling spiderwebs (the arachno-boranes). Which type of structure is obtained correlates with the number of valence electrons in the molecule, and the correlation is expressed by Wade's rules.