Unexpected dispersion-stabilized tris(terphenylthiolate) complexes, Ln(SAr i Pr6 ) 3 , arising from two-electron reduction by Ln(SAr i Pr6 ) 2 Ar i Pr6 = C 6 H 3 -2,6-(C 6 H 2 -2,6,4- i Pr 3 ) 2

Key Points

• This research aims to explore the stability of tris(terphenylthiolate) complexes and the role of London dispersion effects.
• Synthesis of Ln(SAr i Pr6)3 complexes from Ln(SAr i Pr6)2 precursors
• Evaluation of dissociation energies of thiolate ligands
• Analysis of the role of London dispersion energy in complex stability
• London dispersion effects account for approximately half of the dissociation energy of thiolate ligands.
• The study presents the first examples of M(EAr i Pr6)3 complexes with significant metal and donor interaction.