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Synthesis and Characterization of Dibenzoheterocycle‐Bridged Dinuclear Ruthenium Alkynyl and Vinyl Complexes
Author(s) -
Zhang Jing,
Ou Yaping,
Xu Meng,
Sun Chaofang,
Yin Jun,
Yu GuangAo,
Liu Sheng Hua
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402106
Subject(s) - chemistry , ruthenium , cyclic voltammetry , carbazole , electrochemistry , dibenzofuran , redox , photochemistry , fluorenone , bridging ligand , dibenzothiophene , density functional theory , ligand (biochemistry) , inorganic chemistry , molecule , organic chemistry , catalysis , computational chemistry , fluorene , polymer , electrode , biochemistry , receptor
A series of dinuclear ruthenium alkynyl and vinyl complexes bridged by carbazole, dibenzofuran, dibenzothiophene, and fluorenone have been prepared, and some representative molecular structures have been determined. The electrochemical and spectroscopic properties of the compounds were explored by cyclic voltammetry (CV), square‐wave voltammetry (SWV), and in situ infrared and UV/Vis/near‐IR spectroelectrochemical methods. The electrochemical results indicate that the greater the electron density on the ligand, the more stable the bridge‐based oxidation product and the larger the electrochemical splitting. The UV/Vis/near‐IR spectroelectrochemical studies revealed that the bridged ligands strongly contribute to or even dominate the oxidation processes. In addition, IR spectroelectrochemistry strengthens the theory of redox noninnocence in the bridging ligands, which was further confirmed by DFT calculations.