High-resolution NMR studies of (diphosphine)(diene) rhodium complexes in the solid state

Gàbor Szalontai, Jòzsef Bakos, Silvio Aime, Roberto Gobetto

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5 Citations (Scopus)

Abstract

Well-resolved resonances are observed in the 31P-CPMAS NMR spectra of (2S,4S)-2,4-bis(diphenylphosphino)pentane or (S,S)-BDPP (1) and its cationic complexes [(Rh{(S,S)-BDPP}(NBD)]BF4 (2a), [Rh{(S,S)-BDPP}(NBD)]PF6 (2b), [Rh{(S,S)-BDPP}(NBD)]ClO4 (2c) and [Rh{(S,S)-BDPP}(COD)]BF4 (3). Packing forces split the single resonance observed for these systems in solution. The spectral parameters depend remarkably on the counterion in 2a, 2b, and 2c. Complex 3 showed a splitting of every resonance due to the presence of two independent molecules in the unit cell. The complex [Rh{(S, S)-BDPP}(NBD)Cl] (4) showed two broad 31P resonances which are ascribed to a number of closely related structures based on the expected trigonal bipyramidal geometry.

Original languageEnglish
Pages (from-to)223-226
Number of pages4
JournalJournal of Organometallic Chemistry
Volume463
Issue number1-2
DOIs
Publication statusPublished - Dec 28 1993

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ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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