M^II (M = Mn, Fe, Co, Ni and Cu) complexes with a chromone-derived neutral ligand: synthesis, structural characterization, photocatalytic and mycobacterial activity studies

Abstract

The reaction of 2-(2-furyl)-3-hydroxychromone and nicotinoyl chloride produces a neutral ligand (L) which has nitrogen and oxygen donor atoms. Evidence of L polymorphism is discussed. The new molecule showed fluorescence...

Bis(2-pyridyl)ditellane as a precursor to CoII, CuI and CuII complex formation: structural characterization and photocatalytic studies

“…51 Therefore, the preparation of TiO 2 -based photocatalysts with metal complexes of telluro-ligands can be considered a promising system used to improve the visiblelight absorption. 23,24 Li and co-workers reported the synthesis of an ''artificial catalyst'' formed in situ, using CdTe quantum dots (QDs) stabilized by 3-mercaptopropionic acid and CoCl 2 Á6H 2 O for hydrogen evolution under visible light irradiation in water. The hollow-structured Co h -CdTe QD assembly was able to produce a high amount of H 2 (a constant rate of 25 mmol h À1 mg À1 ).…”

“…[20][21][22] Coordination compounds can also be used in the photocatalytic water splitting reaction for hydrogen production. 23,24 Hydrogen has been shown to be an attractive solar fuel because it does not generate pollutants during the combustion process. However, the water splitting reaction is not a thermodynamically favorable process; therefore, extensive research has been carried out for the development of photocatalytic and photoelectrochemical water splitting systems.…”