Long-range through-bond heteronuclear communication in platinum complexes

Olena V. Zenkina, Leonid E. Konstantinovski, Linda J.W. Shimon, Yael Diskin-Posner, Mark A. Iron, Milko E. Van Der Boom

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Four analogous platinum stilbene- and stilbazole-based complexes exhibit unusual long-range heteronuclear spin-spin coupling in solution. Single crystal analysis and NMR experiments show that the 19F, 31P, and 195Pt nuclei communicate over large distances (0.9-1.3 nm) through bond rather than through space. Spin-spin couplings between 195Pt and 19F over seven bonds and between 31P and 19F over eight bonds are observed with 7JPtF = 2.9 Hz and 8JPF = 11.8 Hz. Remarkably, a very large spin coupling between 195Pt and 19F over six bonds (6J PtF = 40.1 Hz) is also observed in a structurally related pyridinium complex. Experimental and gNMR (version 5.0) simulated 19F{ 1H}, 31P{1H}, and 195Pt{ 1H} spectra of the complexes reveal a three-spin AMY system (A = 31P, M = 31P, Y = 19F) or a five-spin AMY3 flanked by a four-spin AMXY or a six-spin AMXY3 system (X = 195Pt), respectively. Density functional theory calculations at the PBE0/SDD level of theory show a π-conjugated metal-ligand network, which may contribute to the experimentally observed spin-spin interactions.

Original languageEnglish
Pages (from-to)4021-4030
Number of pages10
JournalInorganic Chemistry
Volume48
Issue number9
DOIs
Publication statusPublished - May 4 2009

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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  • Cite this

    Zenkina, O. V., Konstantinovski, L. E., Shimon, L. J. W., Diskin-Posner, Y., Iron, M. A., & Van Der Boom, M. E. (2009). Long-range through-bond heteronuclear communication in platinum complexes. Inorganic Chemistry, 48(9), 4021-4030. https://doi.org/10.1021/ic801940h