New carboranes and phosphaboranes*
Bohumil St�br
Institute of Inorganic Chemistry, Academy of Sciences
of the Czech Republic (Research Centre for New Inorganic Compounds and
Advanced Materials, University of Pardubice), 250 68 Rez, Czech Republic
Abstract: A review is presented on the new routes to the synthesis
of the monocarbaboranes [arachno-6-CB9H14]�,
arachno-4-CB8H14, and nido-1-CB8H12,
that now have become excellent starting materials for the preparation
of a family of seven-, eight-, and nine-vertex closo-monocarbaborane
anions [2-CB6H7]�, [1-CB7H8]�,
and [4-CB8H9]�. These anions exhibit
high stability and have a good chance to become new candidates for weakly
coordinated anion chemistry. Discussed are also reactions leading new
families of phosphacarboranes that contain one, two, and three phosphorus
atoms in the cage. These compounds, namely closo- 2,1-PCB8H9, closo-6,1-PCB8H9, nido -7,8,9-PC2B8H11, nido-7,8,11-PC
2B8H11, and nido- 7,8,9,10-P3CB7H8 ,are structural analogs
of the corresponding carboranes and are likely to exhibit similar chemical
behavior.
*Lecture presented at the XIth International Meeting
on Boron Chemistry (IMEBORON XI), Moscow, Russia, 28 July - 2 August
2002. Other presentations are published in this issue,
pp. 1157-1355.
Page last modified 26 September 2003.
Copyright © 2003 International Union of Pure and Applied Chemistry.
Questions or comments about IUPAC, please contact, the Secretariat.
Questions regarding the website, please contact web
manager.