화학공학소재연구정보센터
Chemistry Letters, Vol.47, No.4, 532-535, 2018
Ligand-controlled Behavior of Ag(I)-pi Complex as sigma-Lewis Acid
An efficient sigma-Lewis acidic Ag(I) complex has been obtained by complexation with an electron-donating pi-conjugated molecule as a side-on pi ligand. The sigma-Lewis acidity is possibly derived from the controlled linear coordination around Ag(I) due to the pi ligand. A combination of UV-Vis absorption spectroscopy and X-ray absorption near-edge structure analyses clearly revealed that the complex is formed by pi ligand-to-Ag(I) charge-transfer interaction. The sigma-Lewis acidity was evaluated by IR spectroscopy using 2,6-dimethyl-gamma-pyrone as the sigma-Lewis basic molecule.