Synthesis and Characterization
of a 1,3-Phenylene-Bridged
N‑Alkyl Bis(benzimidazole) CCC-NHC Pincer Ligand Precursor:
Homobimetallic Silver and Rhodium Complexes and the Catalytic Hydrosilylation
of Phenylacetylene
- Publication date
- Publisher
Abstract
A new CCC-NHC pincer ligand precursor architecture based
on 1,3-bis(N-alkylbenzimidazole)benzene
has been synthesized and metalated using Ag<sub>2</sub>O, forming
a homobimetallic Ag complex with a metal to ligand ratio of 1:1. The
Ag complex was treated with either [Rh(COD)Cl]<sub>2</sub> or Rh(COD)<sub>2</sub>OTf and NBu<sub>4</sub>I to yield a homobimetallic Rh complex
by transmetalation. The Rh complexes were characterized, and an X-ray
structure is reported. Their catalytic activity in the hydrosilylation
of phenylacetylene is reported
