title: Use of thio and seleno germanones as ligands: silver(I) halide complexes with Ge═E→Ag-I (E = S, Se) moieties and chalcogen-dependent argentophilic interaction.
abstract: The potential of thio and seleno germanones [LPhGe═E] (L = aminotroponiminate (ATI) ligand, E = S 3, Se 4) to function as ligands has been demonstrated through the isolation of their silver(I) iodide complexes [{(t-Bu)2ATIGe(E)Ph}2(Ag2I2)] (E = S 5, Se 6) with a planar and discrete Ag2I2 core. Compounds 5 and 6 possess the hitherto unknown Ge═E→Ag-I moieties and the crystallographic data reveals the presence of a strong argentophilic interaction (2.950(1) Å) in complex 6, but is inconclusive in complex 5 (3.470(1) Å). Using theoretical studies, proof for the presence and absence of argentophilic interactions in complexes 6 and 5 was obtained, respectively. Further, it is disclosed that the donor ability of the chalcogen atoms in the Ge═E→Ag-I moieties dictate the Ag···Ag interaction in these complexes.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110 016, India.
authors.forename: Dhirendra
authors.initials: D
authors.lastname: Yadav
authors.forename: Rahul Kumar
authors.initials: RK
authors.lastname: Siwatch
authors.forename: Goutam
authors.initials: G
authors.lastname: Mukherjee
authors.forename: Gopalan
authors.initials: G
authors.lastname: Rajaraman
authors.forename: Selvarajan
authors.initials: S
authors.lastname: Nagendran