Synthesis,Structures, and Photophysics of Polynuclear Silver(I) Thiolate and Silver(I) Thiocarboxylate Complexes with Dppm Ligands |
| |
Authors: | Prof Dr Hsiu‐Yi Chao Li Wu Cheng‐Luan Li Wei Lu Li Liu Xiao‐Long Feng |
| |
Institution: | MOE Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering Sun Yat‐Sen University Guangzhou 510275, P. R. China |
| |
Abstract: | Trinuclear silver(I) thiolate and silver(I) thiocarboxylate complexes Ag3(μ‐dppm)3(μn‐SR)2](ClO4) n = 2, R = C6H4Cl‐4 ( 1 ) and C{O}Ph ( 2 ); n = 3, R = tBu ( 3 )], pentanuclear silver(I) thiolate complex Ag5(μ‐dppm)4(μ3‐SC6H4NO2‐4)4](PF6) ( 4 ), and hexanuclear silver(I) thiolate complexes Ag6(μ‐dppm)4(μ3‐SR)4]Y2 Y = ClO4, R =C6H4CH3‐4 ( 5 ) and C10H7 (2‐naphthyl) ( 7 ); Y = PF6, R = C6H4OCH3‐4( 6 )], were synthesized dppm = bis(diphenylphosphanyl)methane] and their crystal structures as well as photophysical properties were studied. In the solid state at 77 K, trinuclear silver(I) thiolate and silver(I) thiocarboxylate complexes 1 and 2 exhibit luminescence at 470–523 nm, tentatively attributed to originate from the 3IL (intraligand) of thiolate or thiocarboxylate ligands, whereas hexanuclaer silver(I) thiolate complexes 5 and 7 produce dual emission, in which high‐energy emission is tentatively attributed to come from the 3IL of thiolate ligands and low‐energy emission is tentatively assigned to come from the admixture of metal ··· metal bond‐to‐ligand charge‐transfer (MMLCT) and metal‐centered (MC) excited states. |
| |
Keywords: | Silver Thiocarboxylates Thiolates X‐ray diffraction Luminescence |
|
|