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Cationic Gold(II) Complexes: Experimental and Theoretical Study **
Author(s) -
Mehara Jaya,
Koovakattil Surendran Adarsh,
Wieringen Teun,
Setia Deeksha,
ForoutanNejad Cina,
Straka Michal,
Rulíšek Lubomír,
Roithová Jana
Publication year - 2022
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202201794
Subject(s) - cationic polymerization , chemistry , denticity , copper , gold compounds , chemical stability , ligand (biochemistry) , electronic structure , catalysis , crystallography , halogen , quantum chemical , inorganic chemistry , computational chemistry , molecule , polymer chemistry , combinatorial chemistry , crystal structure , organic chemistry , biochemistry , alkyl , receptor
Gold(II) complexes are rare, and their application to the catalysis of chemical transformations is underexplored. The reason is their easy oxidation or reduction to more stable gold(III) or gold(I) complexes, respectively. We explored the thermodynamics of the formation of [Au II (L)(X)] + complexes (L=ligand, X=halogen) from the corresponding gold(III) precursors and investigated their stability and spectral properties in the IR and visible range in the gas phase. The results show that the best ancillary ligands L for stabilizing gaseous [Au II (L)(X)] + complexes are bidentate and tridentate ligands with nitrogen donor atoms. The electronic structure and spectral properties of the investigated gold(II) complexes were correlated with quantum chemical calculations. The results show that the molecular and electronic structure of the gold(II) complexes as well as their spectroscopic properties are very similar to those of analogous stable copper(II) complexes.