Synthesis, characterization, luminescent properties of silver (I) complexes based on organic P-donor ligands and mercaptan ligands.

Eight silver (I) complexes with P-donor ligands [triphenylphosphine (PPh 3 ), bis(diphenylphosphino)methane (dppm), 1,2-bis(diphenylphosphino)ethane (dppe) and 1,4-bis(diphenylphosphino)butane(dppb)] and mercaptan ligands [3-amino-5-mercapto-1,2,4-triazole (H 2 AMTA), 2-amino-5-mercapto-1,3,4-thiadiazole (HAMTD), 2-mercapto-6-nitrobenzothiazole (HMNBT) and 2-mercapto-5-methyl-benzimidazole (HMMBD)] named by [Ag 2 (PPh 3 ) 4 (HAMTA) 2 ] n ( 1 ), [Ag 3 (dppm) 3 (AMTD) 2 ] 2 (BF 4 ) 2 ·(dppm) ( 2 ), [Ag 3 (dppm) 3 (AMTD) 2 ] 2 (ClO 4 ) 2 ·(dppm) ( 3 ), [Ag 4 (dppm) 4 (MNBT) 2 ](SO 4 )·(H 2 O) ( 4 ), [Ag 4 (dppe) 4 (HAMTA) 2 (AMTA)] ( 5 ), [Ag 2 (dppb) 2 (HAMTD) 2 ](CF 3 SO 3 ) 2 ·2(CH 3 OH) ( 6 ), [Ag 2 (dppb) 2 (HMNBT) 2 ](CF 3 SO 3 ) 2 ( 7 ) and {[Ag(dppb)(HMMBD) 2 ](CF 3 SO 3 )·2(CH 3 OH)·(H 2 O)} n ( 8 ) are characterized by X-ray diffraction, NMR and fluorescence spectroscopy. Complexes 1 and 8 show 2D network structure. Complexes 2 – 5 are multi-nuclear clusters. Complexes 6 – 7 are of di-nuclear structure. In complex 7 , the offset π⋯π interactions between the neighboring benzene rings help to form the 1-D infinite chain. All the emission peaks of these complexes are attributed to ligands-centered [π–π ∗ ] transitions. [ABSTRACT FROM AUTHOR]