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Two palladium(II) complexes based on Schiff base ligands: synthesis, characterization, luminescence, and catalytic activity

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Abstract

Two Pd(II) complexes involving Schiff base ligands, namely, [Pd(L1)2] (1), [Pd2(L2)Cl2] (2) [HL1 = 2-((2,6-diisopropylphenylimino)methyl)-4,6-dibromophenol, L2 = N-(4-isopropylbenzylidene)-2,6-diisopropylbenzenamine] have been synthesized using solvothermal methods and characterized by elemental analysis, IR-spectroscopy, thermogravimetric analysis, powder X-ray diffraction, UV–vis absorption spectra, and single-crystal X-ray diffraction. Complex 1 is a mononuclear cyclometalated Pd(II) complex, whereas complex 2 is a μ-chloro-bridged dinuclear. Both 1 and 2 display photoluminescence in the solid state at 298 K and possess fluorescence lifetimes (τ 1 = 86.40 ns, τ 2 = 196.21 ns, τ 3 = 1,923.31 ns at 768 nm for 1, τ 1 = 69.92 ns, τ 2 = 136.40 ns, τ 3 = 1,714.26 ns at 570 nm for 2). The Suzuki reactions of 4-bromotoluene with phenylboronic acid by complexes 1–2 have also been studied.

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Acknowledgments

We are thankful for financial support of this work provided by Science and Technology Planning Project of Zhaoqing City (2012G030), Science and Technology Innovation Planning Project of Zhaoqing City (2012G013), and Distinguished Young Talents in Higher Education of Guangdong Province (2012LYM_0134).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing, 526061, People’s Republic of China

    Hai-Fu Guo, Xin Zhao, De-Yun Ma, Ai-Ping Xie & Wei-Bo Shen

  2. College of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia, 010051, People’s Republic of China

    Xin Zhao

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  1. Hai-Fu Guo
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  2. Xin Zhao
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Correspondence to Hai-Fu Guo.

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Guo, HF., Zhao, X., Ma, DY. et al. Two palladium(II) complexes based on Schiff base ligands: synthesis, characterization, luminescence, and catalytic activity. Transition Met Chem 38, 299–305 (2013). https://doi.org/10.1007/s11243-013-9691-y

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