Application of the NOE experiment to the analysis of boron hydride derivatives: Confirming the assignments of the pseudocloso-complex [1,2-Ph2-3-{Cp*-IrC2B9H9] (Cp*=η5-C5Me5) and the closo-compounds 1-Ph-1,2-C2B10H11 and 1-Ph-2-Me-1,2-C2B10H10

David Reed, Alan J. Welch, Jill Cowie, David J. Donohoe, John A. Parkinson

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The NOE experiment is demonstrated here as a viable tool in the NMR analyses of substituted borane and heteroborane compounds. We demonstrate that the saturation of1H NMR signals assigned to a substituent ligand can give rise to enhancements of signals arising from B-H's within a borane cage. These enhancements, though small (ca. 1-2%), are clearly detectable and have been used to confirm assignments for the pseudocloso-complex [1,2-Ph2-3-{Cp*}-3,1,2-IrC2B9H 9] (Cp*=?5-C5Me5), the mono-substituted closo-carbaborane 1-Ph-1,2-C2B10H11 and the di-substituted closo-carbaborane 1-Ph-2-Me-1,2-C2B10H10. We compare the results of applying three alternative experimental NOE procedures to these problems, namely phase sensitive 2D NOESY, 1D truncated driven NOE and 1D DPFGSE-NOE. The differences between the quality and relevance of these procedures to the study of borane and heteroborane derivatives are discussed. © 1999 Elsevier Science S.A.

Original languageEnglish
Pages (from-to)125-133
Number of pages9
JournalInorganica Chimica Acta
Volume289
Issue number1-2
Publication statusPublished - 15 Jun 1999

Keywords

  • Boron
  • Iridium
  • Nuclear magnetic resonance
  • Overhauser effect

Fingerprint Dive into the research topics of 'Application of the NOE experiment to the analysis of boron hydride derivatives: Confirming the assignments of the pseudocloso-complex [1,2-Ph<sub>2</sub>-3-{Cp*-IrC<sub>2</sub>B<sub>9</sub>H<sub>9</sub>] (Cp*=η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>) and the closo-compounds 1-Ph-1,2-C<sub>2</sub>B<sub>10</sub>H<sub>11</sub> and 1-Ph-2-Me-1,2-C<sub>2</sub>B<sub>10</sub>H<sub>10</sub>'. Together they form a unique fingerprint.

  • Cite this