Thioamidinate Zinc Complexes: Synthesis and Photoluminescence Studies

Thioamidinate Zn(II) complexes have been of great interest in chemical vapor deposition (CVD) due to their sufficient volatility; however, their photophysical properties remain largely unexplored. Here, a phenyl- and tert -butyl-substituted thioamidinate ligand ( L ) has been employed for the synthesis of Zn(II) complexes. Reactions with different Zn(II) precursors like [ZnMe 2 (TMEDA)] (TMEDA = tetramethylethylenediamine), [ZnPh 2 ] and [{ATI( i -Pr) 2 }Zn–N(TMS) 2 ] (ATI = aminotroponiminato, TMS = trimethylsilyl), afforded complexes of the type [ L 2 Zn(TMEDA)], [ L 4 Zn 2 ] and [ L Zn{ATI( i -Pr) 2 }], respectively. The resulting Zn(II) complexes exhibit phosphorescence with emission maxima ranging from 490 to 560 nm at 77 K, while ranging from 435 to 550 nm at 295 K.