A novel 4,4′-hexafluoroisoprorylidene-diphthalhydrazidate-bridged 3D coordination polymer of Pb(II): Hydrothermal in situ synthesis, structural characterization and photocatalytic property

• Published in: Journal of molecular structure Vol. 1304; p. 137703
• Main Authors: Wang, Yuan-Peng, Guo, Ying-Chun, Lu, Jing, Wang, Yu-Chang, Han, Yu, Yan, Wen-Fu, Zhang, Jia-Jia, Jin, Juan, Qu, Jia-Tong, Zou, Hai-Feng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.05.2024
• Subjects: 4,4′-hexafluoroisoprorylidene-diphthalhydrazidate; Coordination polymer; Hydrothermal in situ acylation reaction; Pb(II); Photocatalysis; Pb(II); Hydrothermal in situ acylation reaction; Coordination polymer; 4,4′-hexafluoroisoprorylidene-diphthalhydrazidate; Photocatalysis
• ISSN: 0022-2860
• DOI: 10.1016/j.molstruc.2024.137703

•A novel Pb(II) coordination polymer [Pb(FDPTH)(phen)] (1; FDPTH =4,4′ hexafluoroisoprorylidene-diphthalhydrazidate, phen = 1,10-phenanthroline) with 3D network structure was obtained.•The FDPTH ligands derived from the hydrothermal in situ acylation reactions.•Compound 1 is a potential visible light catalyst.•The mechanism of photocatalytic reaction was deeply studied. A new coordination polymer photocatalyst, [Pb(FDPTH)(phen)] (1; FDPTH 4,4′ hexafluoroisoprorylidene-diphthalhydrazidate, phen = 1,10-phenanthroline) was synthesized for the frist time. The FDPTH ligand was obtained by the in situ acylation reactions between 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6-FDCA) and N2H4·H2O for the first time. X-ray single-crystal diffraction analysis showed that FDPTH ligands have a μ4-bridging mode in compound 1, which linking Pb(II) centers to create a 3D network structure. Hirshfeld surface analysis was used to investigate the crystal packing and interactions of compound 1. The catalytic activity of compound 1 for methylene blue (MB) was tested under visible light. The degradation for MB followed a pseudo-first-order kinetic pattern and remained efficient after repeated experimental runs. The active species in catalytic process were discovered by radical trapping experiments. The band gap of compound 1 was determined via UV-vis absorbance spectra and Mott-Schottky plot, and a photocatalytic mechanism was proposed for the degradation process. [Display omitted] A new coordination polymer photocatalyst, [Pb(FDPTH)(phen)] (1; FDPTH =4,4′ hexafluoroisoprorylidene-diphthalhydrazidate, phen = 1,10-phenanthroline) was synthesized for the frist time. The FDPTH ligand was obtained by the in situ acylation reactions between 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6-FDCA) and N2H4·H2O for the first time. X-ray single-crystal diffraction analysis showed that FDPTH ligands have a μ4-bridging mode in compound 1, which linking Pb(II) centers to create a 3D network structure. Hirshfeld surface analysis was used to investigate the crystal packing and interactions of compound 1. The catalytic activity of compound 1 for methylene blue (MB) was tested under visible light. The degradation for MB followed a pseudo-first-order kinetic pattern and remained efficient after repeated experimental runs. The active species in catalytic process were discovered by radical trapping experiments. The band gap of compound 1 was determined via UV-vis absorbance spectra and Mott-Schottky plot, and a photocatalytic mechanism was proposed for the degradation process.