Aromatic dithiolate nickel complexes bearing N-substituted bis (diphenylphosphanyl)amine: Synthesis, characterization, and electrocatalytic performance for hydrogen evolution

作者：Deng, Cheng-Long; Zhang, Dong-Liang; Xie, Bin^*; Lai, Chuan; He, Lin-Xin^*; Hu, Shu-Peng; Li, Yu-Long; Wu, Yu; Feng, Jian-Shen; Zou, Li-Ke; Mou, Wen-Yu; Wei, Jian

来源：Polyhedron, 2018, 155: 407-414.

DOI：10.1016/j.poly.2018.08.050

• Dithiolate nickel complex
• N-substituted bis(diphenylphosphanyl) amine
• Crystal structure
• Electrochemical property
• Hydrogen evolution

Six aromatic dithiolate nickel complexes bearing N-substituted bis(diphenylphosphanyl)amine (RN (PPh2)(2)) ligands, IRN(PPh2)(2)Ni(bdt)] (bdt = 1,2-benzenedithiolate; R= (CH2)(3)OCH3 (1), (CH2)(3)SCH3 (2), CH(CH3)C6H5 (3)) and IRN(PPh2)(2)Ni(tdt)] (tdt = 3,4-toluenedithiolate; R = (CH2)(3)OCH3 (4), (CH2)(3)SCH3 (5), CH(CH3)C6H5 (6)), have been synthesized in moderated yields by condensations of RN(PPh2)(2)NiCl2 with 1,2-benzenedithiol or 3,4-toluenedithiol in the presence of Et3N at room temperature. All the complexes were fully characterized by elemental analysis, FTIR, NMR (H-1, C-13, and P-31) spectroscopy, UV-Vis spectrum, and thermo-gravimetric analysis. The crystal structures of complexes 1, 2, 3, and 5 have been investigated by single crystal X-ray diffraction. The nickel atom adopts a slightly distorted square-planar coordination by two phosphorus atoms of RN(PPh2)(2) and two sulfur atoms of aromatic dithiolate ligands in their structures. Furthermore, the electrochemical behaviors of complexes 1-6 and their catalytic activities for electrochemical hydrogen evolution in CH2Cl2 solution with trifluoroacetic acid (TFA) as a proton source have been studied by cyclic voltammetry.

• 出版日期2018-11-15
• 单位四川文理学院; 四川轻化工大学