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Cage CH⋯X interactions in solid-state structures of icosahedral carboranes

✍ Scribed by Mark A. Fox; Andrew K. Hughes

Book ID
104010620
Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
544 KB
Volume
248
Category
Article
ISSN
0010-8545

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✦ Synopsis

This review probes C-H • • • X interactions involving the acidic cage-carbon C-H bonds in ortho-, meta-and para-carboranes, closo-C 2 B H 12 , and their derivatives, by examining the structurally characterised examples from the Cambridge Structural Database and other sources. Examples are examined of weak hydrogen bonds to X = O, N, S, F, Cl, Br, I, plus alkyne, cyclopentadienyl and arene-systems. In addition there are examples of C-H • • • H-X dihydrogen bonding. Cage C-H • • • X interactions can be used to account for the observation of ordered structures in examples of carboranes where disorder of C and B cage atoms is possible.

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