Excited state energy landscape of phosphorescent group 14 complexes

Abstract

Great progress has been achieved on phosphorescent or photoactive complexes of the Earth-abundant transition metals, while examples for phosphorescent heavy main group element complexes are rare, in particular for group...

Applications of low-valent compounds with heavy group-14 elements

“…Heinze and co-workers reported the synthesis of tri-coordinate stannylene Sn47 via the transamination of H 2 bpep with the Sn(N(TMS) 2 ) 2 in the presence of DCM in 74% yield (Scheme 90). 117…”

“…DFT calculation provided activation barriers of 0.29 eV and 0.23 for 3 ILCT/ 3 LMCT pyr and 3 ILCT/ 3 LMCT py (optimized transition states of compound Sn47 ), respectively. 117…”

“…In contrast, no 3 ILCT/ 3 LMCT pyr transition state could be detected in Pb11 , and a significantly lower activation barrier for 3 ILCT/ 3 LMCT py of 0.06 eV was observed. 117…”

Effects of Heavy p‐Block Elements on Photophysical Properties of π‐Conjugated Complexes and Organoelement Compounds

“…53SnOTf was obtained as an air‐ and moisture‐sensitive orange solid. By using the unique tridentate ligand, the phosphorescence property from low‐valent tin ( 54Sn ) and lead ( 54Pb ) complexes were detected [128] . It was revealed that the tin complex ( 54Sn ) showed green intraligand charge transfer (ILCT) phosphorescence both in solution and in the solid state, meanwhile the lead complex ( 54Pb ) only showed very weak red phosphorescence from a strongly distorted ligand‐to‐metal charge transfer (LMCT) state at low temperatures in the solid state.…”