Synthesis and reactivity of BINEPINE-based chiral Fe(II) PNP pincer complexes.

ABSTRACT:

Abstract

A new asymmetric chiral PNP ligand based on the 2,6-diaminopyridine scaffold featuring a R-BINEPINE moiety was prepared. Treatment of anhydrous FeX₂ (X = Cl, Br) with 1 equiv of PNP-iPr,BIN at room temperature afforded the coordinatively unsaturated paramagnetic complexes [Fe(PNP-iPr,BIN)X₂]. The structure of [Fe(PNP-iPr,BIN)Cl₂] is described. Both complexes react readily with the strong π-acceptor ligand CO in solution to afford selectively the diamagnetic complexes trans-[Fe(PNP-iPr,BIN)(CO)X₂] in quantitative yield. Due the lability of the CO ligand, these complexes are only stable under a CO atmosphere and isolation in pure form was not possible. The preparation of the carbonyl hydrid

SUBMITTER: Schroder-Holzhacker C 

PROVIDER: S-EPMC4869728 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature