Jump to main content
Jump to site search

Issue 10, 2011
Previous Article Next Article

A sandwich complex of trimesitylborane Mes3B: synthesis, characterization and anion binding properties of Mes2B[(η6-Mes)FeCp]+

Author affiliations

Abstract

As part of our continuing interest in the chemistry of Lewis acidic organoboron compounds as anion receptors, we have synthesized the hexafluorophosphate salt of the cationic borane Mes2B[(η6-Mes)FeCp]+ ([1]+) by reaction of [(η6-naphthalene)FeCp][PF6] with Mes3B. This compound, which undergoes two quasi-reversible reductions at E1/2 = −1.56 V and −2.40 V, reacts with both fluoride and cyanide anions in THF or MeOH to afford the corresponding zwitterionic fluoro- (1-F) and cyano-borate (1-CN) species, respectively. Spectrophotometric titrations carried out in THF indicate that the fluoride and cyanide binding constants of [1]+ are much larger than those of Mes3B. This difference points to the favorable inductive and coulombic effects imparted by the cationic [CpFe]+ moiety on the Lewis acidity of the boron center.

Graphical abstract: A sandwich complex of trimesitylborane Mes3B: synthesis, characterization and anion binding properties of Mes2B[(η6-Mes)FeCp]+

Back to tab navigation

Supplementary files

Additions and corrections

Publication details

The article was received on 01 Apr 2011, accepted on 13 Jun 2011 and first published on 07 Jul 2011


Article type: Paper
DOI: 10.1039/C1NJ20290A
New J. Chem., 2011,35, 2299-2305

  •   Request permissions

    A sandwich complex of trimesitylborane Mes3B: synthesis, characterization and anion binding properties of Mes2B[(η6-Mes)FeCp]+

    D. Cao, H. Zhao and F. P. Gabbaï, New J. Chem., 2011, 35, 2299
    DOI: 10.1039/C1NJ20290A

Search articles by author

Spotlight

Advertisements