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Benchmark Study of Density Functionals for the Insertions of Olefin and Polar Monomers Catalyzed by α-Diimine Palladium Complexes
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  • Ce Liang,
  • Jimin Yang,
  • gen Luo,
  • Yi Luo
Ce Liang
Dalian University of Technology

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Jimin Yang
Dalian University of Technology
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gen Luo
Anhui University
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Yi Luo
Dalian University of Technology
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The performance of a series of density functionals has been tested for the insertions of ethylene, methyl acrylate (MA), and vinyl bromide (VB) catalyzed by α-diimine palladium complexes. Sixty-seven density functionals are screened, and the results are compared with available experimental data. Eleven hybrid functionals (M06, BHandH, mPW1PW91, HSEh1PBE, mPW3PBE, LC-ωPBE, mPW1PBE, PBE0, M06-HF, M06-2X, M05-2X) showed better performance in the insertions of both ethylene and MA, and could be therefore suitable for ethylene-MA copolymerization. Meanwhile, three GGA (PW91PW91, HCTH, HCTH407), two meta-GGA (TPSSTPSS, tHCTH), and ten hybrid functionals (M06, BHandH, TPSSh, B971, B98, B1B95, PBE0, M06-2X, tHCTHhyb, M05-2X) perform well in the ethylene-VB copolymerization. Besides, nine D3 or D3BJ augmented functionals are found to be suitable for both copolymerization systems. The D2 dispersion correction overestimated insertion energy barriers of these monomers and is unsuitable for such copolymerization. In addition, the double-zeta basis set is found to be sufficient for solvation single-point calculation of these systems.
20 May 2020Submitted to International Journal of Quantum Chemistry
21 May 2020Assigned to Editor
21 May 2020Submission Checks Completed
02 Jun 2020Reviewer(s) Assigned
Oct 2020Published in Computational and Theoretical Chemistry volume 1187 on pages 112942. 10.1016/j.comptc.2020.112942