Hydrocarbon Oxidation Catalyzed by [Ru(TDL)(XY)Z] Complexes (TDL = Tridentate Ligand; XY = Bidentate Ligand and Z = H2O or Halide)

Abstract

Mixed-chelate [Ru(TDL)(XY)Z] type complexes (TDL = tridentate ligand; XY = bidentate ligand and Z = H 2 O or halide) are known to perform hydrocarbon oxidation under ambient conditions. The subject of this review comprises the use of various tri-dentate polypyridyl and Schiff-base complexes of ruthenium as catalysts for performing oxo-functionalization of a number of organic substrates using various precursor oxidants. The catalytic ability and mechanistic details of such ruthenium based catalyst complexes in the oxidation of saturated and unsaturated hydrocarbons under homogeneous reaction are systematically reviewed in this article highlighting the author's own recent investigations on such catalytic systems.

The development of ruthenium(ii) polypyridyl complexes and conjugates forin vitrocellular andin vivoapplications

“…6,7 This has made such complexes highly desirable across numerous research fields, including catalysis, solar energy, sensors, etc. [8][9][10][11][12][13][14][15] Moreover, their photophysical and photochemical properties can be tuned by varying the nature and the numbers of the polypyridyl ligands around the Ru(II) metal centre. 16,17 Furthermore, due to the octahedral geometry of a number of these complexes, chemists can readily gain access to molecules with complicated 3-dimensional architectures.…”

Theoretical Study of Oxidation of Cyclohexane Diol to Adipic Anhydride by [RuIV(O)(tpa)(H2O)]2+ Complex (tpa ═ Tris(2-pyridylmethyl)amine)

“…The analogous nonheme iron complex, [Fe IV (O)(tpa)(H 2 O)] 2+ , has been previously characterized, and a similar reaction was reported with cerium(IV) ammonium nitrate as an oxidant . Although they investigated the oxidation of cyclohexene by FeO species using UV–vis spectral changes, our knowledge on the mechanism of the direct oxidation of cyclohexene to adipic acid is rather limited despite the accumulation of many experimental facts. , The analogous catalytic oxidation of cyclohexene to adipic acid over an iron porphyrin complex has been reported by Zhong and co-workers . A detailed theoretical analysis of this reaction was performed by Sieghban and co-workers, who proposed a mechanism via two consecutive hydroxylation steps.…”