753446-09-2Relevant academic research and scientific papers
Pd-tetrahydrosalan-type complexes as catalysts for sonogashira couplings in water: Efficient greening of the procedure
Voronova, Krisztina,Homolya, Levente,Udvardy, Antal,Benyei, Attila C.,Joo, Ferenc
, p. 2230 - 2239 (2014)
New sulfonated tetrahydrosalen-type ligands and their water-soluble palladium(II) complexes have been synthesized. The palladium(II) complexes catalyze the Sonogashira coupling (23 examples) of various aryl halides (including chloroarenes) with terminal alkynes, with good to excellent conversions under mild conditions (80 °C, air, no CuI cocatalyst) in aqueous-organic mixtures and turnover frequencies of up to 2790 h -1. Under optimized reaction conditions to minimize environmental contamination, diphenylacetylenes can be isolated in 76-98 % yield. The aqueous catalyst solution can be recycled four times with decreasing activity; however, yields between 93 and 98 % can still be achieved with extended reaction times. Several water-insoluble products can be isolated in excellent yield by simple filtration and purification by washing with water; this method is used, for the first time, for this type of C - C coupling procedure.
A mononuclear zinc complex with a diamine: Synthesis, characterization, self assembly, luminescence property and DFT calculations
Banerjee, Snehasis,Chattopadhyay, Shouvik,Mondal, Ipsita
, (2021/10/12)
A zinc complex with a N2O2 donor diamine is synthesized and its fluorescence property is explored. The hydrogen bonding environment in its solid state structure is well supported qualitatively and quantitatively with the help of Reduced Density Gradient (RDG) based NCI (non-covalent interactions) index calculation and AIM analyses. Also, the physical nature of other weak non-covalent interactions in the complex is examined. The absorption and emission properties of the complex are explained using density functional theory (DFT) calculations. Analysis of the natural transition orbitals (NTO) shows that the excited state can be mainly characterized by an intra-ligand charge transfer (ILCT) transition within a diamine from the highest-occupied NTO (hole) to the lowest-unoccupied NTO (electron).
Coordinating ligand functionalized AgNPs for colorimetric sensing: Effect of subtle structural and conformational change of ligand on the selectivity
Vinod Kumar,Philip Anthony, Savarimuthu
, p. 64717 - 64724 (2015/04/27)
Metal coordinating C2-symmetric phenolic chelating ligands (1-3) were used to prepare surface functionalized AgNPs for selective colorimetric sensing of metal cations and anions. The effect of subtle structural and conformational change of 1-3
