Ru(II)–CO complexes of thioarylazoimidazoles: Syntheses, structures, spectroscopy and DFT calculation

Alcohol oxidation reactions catalyzed by ruthenium–carbonyl complexes of thioarylazoimidazoles

“…For more than a decade we have been engaged in the development of ruthenium chemistry of different arylazoheterocycles . The coordination chemistry of arylazoheterocycle with transition and non‐transition metals is popular because of their chemical, photophysical, photochemical, photochromic, catalytic, redox, biochemical, and magnetic properties . The π‐acidity of azoimine function (―N=H;N―C=H;N―) stabilizes the lower oxidation state of the metal ions in their coordination complexes.…”

“…The π‐acidity of azoimine function (―N=H;N―C=H;N―) stabilizes the lower oxidation state of the metal ions in their coordination complexes. The cooperative effect of π‐acidic ancillary ligands such as CO, PPh 3 along with ―N=H;N―C=N― (arylazoheterocycles) influences the stability and catalytic efficiency of the complexes . In view of the economic and ecological importance of these catalysts we have used a series of arylazoimidazoles for the synthesis of Ru―CO and/or Ru―H―CO complexes and explored their catalytic efficiency to alcohol oxidation.…”

Structure and photochromism of Zn(II) thiocyanato complexes of 1-alkyl-2-{(o-thioalkyl)phenylazo}imidazole

“…This family of compounds has been extensively used as ligands for metal ions by us [8][9][10][11][12][13] and others [14][15][16]. We have synthesized 1-alkyl-2-{(o-thioalkyl)phenylazo}imidazole (SRaaiNR / ), a member of arylazoimidazole family, that has three potential donor centers-N(imidazolyl) (N), N(azo) (N / ) and thioether (-SR) [17][18][19]. The ligand, SRaaiNR / , can also be bidentate N(imidazolyl) (N), N(azo) (N / ) chelator [20][21][22] and monodentate N(imidazolyl) [23] ligand.…”

1‐Alkyl‐2‐{(O‐Thioalkyl)Phenylazo}Imidazole Complexes of PbII and Their Photochromic Property

“…The molecule is π-acidic and its active function is an azoimine group (-N=N-C=N-). We have studied the coordination chemistry [12][13][14][15][16] and analytical application [17,18] of arylazoimidazoles. Our group has recently started to investigate the coordination chemistry of Pb II with 1-alkyl-2-(arylazo)-imidazole.…”