Carboranes by Russell N. Grimes

By Russell N. Grimes

Carboranes, 3rd Edition, via Russell Grimes, is the definitive source at the topic. thoroughly up-to-date with a wealth of analysis and evaluation articles released during this energetic box because the earlier quantity was once published in 2011, the ebook offers a readable and concise creation to the fundamental ideas underlying the synthesis, constructions, and reactions of carboranes, heterocarboranes, and metallacarboranes. Following the dear foundational info, the ebook explores the advances in functional functions for the various components during which specialists have came across that carboranes come up with the money for new percentages for fixing difficulties and advancing the technology. those disciplines comprise polymer technological know-how, catalysis, biomedicine, nanomaterials, and others.

  • Includes over 2,000 molecular constitution drawings in the course of the text
  • Features elevated assurance on functions of carboranes, relatively in biomedicine and nanomaterials, given the expansion of analysis in those areas
  • Presents prolonged and up to date tables, directory millions of compounds with key literature references, supplied on-line through the book’s website
  • Explores the advances in useful purposes for the numerous components within which specialists have came upon that carboranes manage to pay for new probabilities for fixing difficulties and advancing the science

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Additional info for Carboranes

Sample text

In addition to the polyhedral carboranes mentioned, the dehalogenation reactions yield less stable carborane compounds, some of which have been identified as alkyl derivatives of 2-carba-«/ufo-hexaborane(9), CB5H9. Since many of these products are converted by heat into c/ayo-carboranes, larger quantities of the latter may be obtained by simply heating the dehalogenation reaction mixture to 150° or 200° (184,185). Mass spectroscopic analysis of the products is indicative of numerous unidentified carborane species containing up to seven boron atoms.

Yö-pentaborane(7) [(CH3)2C2B5(C2H5)5] has been obtained from both C 2 H 5 BF 2 and (C2H5)2BC1. The total yield of volatile carboranes may be increased by heating triethylborane together with the solid residues from the above reactions (185). This 4 - 1 . SYNTHESIS 39 treatment generates additional distillable alkyl derivatives of 1,5-C2B3H5 and 2,4-C2B5H7. In addition to the polyhedral carboranes mentioned, the dehalogenation reactions yield less stable carborane compounds, some of which have been identified as alkyl derivatives of 2-carba-«/ufo-hexaborane(9), CB5H9.

High-energy borane-alkyne interactions 2. Conversion of «zV/o-carboranes to c/ö^ö-carboranes 3. Reactions of alkylboranes with alkynes 4. Hydroboration of alkynylboranes 5. Dehalogenation of alkylhaloboranes with alkali metals 6. Pyrolysis and electric discharge of alkylboranes 7. Reactions of boranes with carbon vapor Only reactions 1, 2, 6, and 7 have given parent c/ojö-carboranes, the other methods producing alkylated species only. In contrast to the synthesis of the icosahedral C 2 B 10 H 12 isomers, quantitative yields have not been approached for any individual small polyhedral system.

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