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Synthesis, characterization, X‐ray structure, electrochemistry, photocatalytic activity and DFT studies of heterotrinuclear Ni(II), Pd(II) and Zn(II) complexes containing a formylferrocene thiosemicarbazone ligand
Author(s) -
Chung Patricio,
Huentupil Yosselin,
Rabanal Walter,
Cisterna Jonathan,
Brito Iván,
Arancibia Rodrigo
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5974
Subject(s) - chemistry , semicarbazone , photocatalysis , ligand (biochemistry) , denticity , crystal structure , electrochemistry , proton nmr , crystallography , methylene , nuclear chemistry , stereochemistry , inorganic chemistry , medicinal chemistry , catalysis , organic chemistry , biochemistry , receptor , electrode
Three complexes of the general formula M{CpFe( η 5 ‐C 5 H 4 CH=N–N=C(S)NH 2 } 2 [where M = Ni II ( 2a ), Pd II ( 2b ) and Zn II ( 2c )] were synthesized with formylferrocene thiosemicarbazone ( 1 ) as a bidentate ligand. All compounds were characterized using conventional spectroscopic and analytical techniques (infrared, 1 H and 13 C NMR, mass spectrometry and elemental analysis). The molecular structure of 2b was confirmed by single‐crystal X‐ray analysis. To study the photocatalytic activity of the new complexes ( 2a–c ), methylene blue (MB) was selected as a model pollutant. After 180 min, the degradation efficiency of MB reached 87% for 2a , 76% for 2b and 85% for 2c , and all complexes showed a higher photocatalytic activity than the formylferrocene thiosemicarbazone free ligand 1 . Theoretical studies were used to characterize the geometry and electronic structure of the compounds and to provide a rational explanation for the measured photocatalytic activity.