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 Lynn Lohr, Tobin J. Marks, Michael F. Mayer, J. Fraser Stoddart*, Michael Findlater

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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 (US)
Pages (from-to)1130-1143
Number of pages14
JournalJournal of Polymer Science
Volume58
Issue number8
DOIs
StatePublished - Apr 15 2020

Funding

Financial support from the National Science Foundation (MFM research grant CHE‐0847736, MF research grant CHE‐1554906, and NMR grant CHE‐1048553), the Joint Center of Excellence in Integrated Nanosystems at King Abdulaziz City for Science and Technology (KACTS), and Northwestern University (NU) are gratefully acknowledged. We also thank the Department of Chemistry and Biochemistry of Texas Tech University and the Integrated Molecular Structure Education and Research Center (IMSERC) at Northwestern University (NU) for use of the instrumental facilities. Financial support from the National Science Foundation (MFM research grant CHE-0847736, MF research grant CHE-1554906, and NMR grant CHE-1048553), the Joint Center of Excellence in Integrated Nanosystems at King Abdulaziz City for Science and Technology (KACTS), and Northwestern University (NU) are gratefully acknowledged. We also thank the Department of Chemistry and Biochemistry of Texas Tech University and the Integrated Molecular Structure Education and Research Center (IMSERC) at Northwestern University (NU) for use of the instrumental facilities. Northwestern University (NU); Joint Center of Excellence in Integrated Nanosystems at King Abdulaziz City for Science and Technology (KACTS); National Science Foundation, Grant/Award Numbers: CHE‐1048553, 1554906, CHE‐0847736 Funding information

Keywords

  • catalysis
  • oligomerization
  • phenanthroline
  • transition metals

ASJC Scopus subject areas

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

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