Stereoselective self-assembly of cis- and trans- [Pt₂L₂] metallacycles via geometrically-asymmetric 90^o Pt(II) acceptors.

ABSTRACT: Stereoselective synthesis of cis- and trans- configurations remain challenging in molecular systems. Here, asymmetric 90^o Pt(II) acceptors enable stereoselective coordination-driven self-assembly of configuration-specific [Pt₂L₂] metallacycles. The coordination of trimethylphosphine or triethylphosphine (PR₃) and phosphangulene (Phang) to the Pt(II) centers yielded two asymmetric cis-PtCl₂(PR₃)(Phang) complexes. Upon ligand exchange, these acceptors assemble with the bispyridyl ligands to form statistical mixtures of cis- and trans- metallacycles. Stereoselective self-assembly is achieved by modifying the bis-pyridyl ligand with N-ortho-bismethyl groups, leveraging intramolecular C-H···π interactions with Phang, steric effec

SUBMITTER: Qin J 

PROVIDER: S-EPMC12748632 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature