Synthesis, structures, photophysical properties, and catalytic characteristics of 2,9-dimesityl-1,10-phenanthroline (dmesp) transition metal complexes

M. Mustafa Cetin, Sara Shafiei-Haghighi, Jiazhen Chen, Sheng Zhang, Amanda C. Miller, Daniel K. Unruh, Dominick J. Casadonte, Tracy L. Lohr, Tobin J. Marks, Michael F. Mayer, J. Fraser Stoddart, Michael Findlater

Research output: Contribution to journalArticlepeer-review

Abstract

The syntheses of the 2,9-dimesityl-1,10-phenanthroline (dmesp) metal complexes, [Cu(dmesp)(MeCN)]PF6 (1), [Cu(dmesp)2]PF6 (2), Fe(dmesp)Cl2 (3), Co(dmesp)Cl2 (4), Ni(dmesp)Cl2 (5), Zn(dmesp)Cl2 (6), Pd(dmesp)MeCl (7), Cu(dmesp)Cl (8), and Pd(dmesp)2Cl2 (9), in good to high yields are described. These complexes were characterized by 1H and 13C NMR spectroscopy, HR–MS (ESI and/or APPI), and elemental analysis (CHN). The solid-state structures of complexes 1–8 were determined by single-crystal X-ray analysis and their photophysical properties were also characterized. To demonstrate the versatility of this new platform, complexes 3–5, 8, and 9 were employed in the catalytic oligomerization of ethylene using modified methyl aluminoxane (MMAO) as the cocatalyst, where Co(II) and Ni(II) complexes (4 and 5, respectively) were found to exhibit moderate selectivity for catalytic dimerization of ethylene to butenes over tri- or tetramerization. Complex 8 is an effective catalyst of both the commonly encountered “click” reaction and amine arylation chemistries. Complexes 6 and 9 were found to be excellent catalysts for Friedel-Crafts alkylation and Suzuki-Miyaura coupling, respectively.

Original languageEnglish
Pages (from-to)1130-1143
Number of pages14
JournalJournal of Polymer Science
Volume58
Issue number8
DOIs
Publication statusPublished - Apr 15 2020

Keywords

  • catalysis
  • oligomerization
  • phenanthroline
  • transition metals

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Polymers and Plastics

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