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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25 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

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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