Effect of Pnictogen ligand substitution on a tripalladium ditropylium core

Dominic C. Babbini, Frank L. Mulligan, Hannah R. Schulhauser, Tara C. Sweigart, Gary S. Nichol, Stephanie K Hurst

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23 Scopus citations


A combination of multinuclei NMR, UV-vis spectroscopy, and single crystal X-ray diffraction was used to characterize a new series of tripalladium ditropylium sandwich complexes [Pd3Tr2(E) 3][BF4]2 (E = PPh3, AsPh 3, and SbPh3 and PEt3). Ligand substitution leads to a systematic shift of the 1H and 13C NMR tropylium resonances and is correlated with the electron donating properties of the substituent group. Replacement of the ligand increases the palladium-pnictogen bond length in the order P < As < Sb; however, this only slightly alters the internal Pd-Pd bond lengths, supporting the hypothesis that there are only weak Pd-Pd bonding interactions.

Original languageEnglish (US)
Pages (from-to)4307-4312
Number of pages6
JournalInorganic Chemistry
Issue number9
StatePublished - May 3 2010


ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Babbini, D. C., Mulligan, F. L., Schulhauser, H. R., Sweigart, T. C., Nichol, G. S., & Hurst, S. K. (2010). Effect of Pnictogen ligand substitution on a tripalladium ditropylium core. Inorganic Chemistry, 49(9), 4307-4312. https://doi.org/10.1021/ic100151x