Title: Synthesis and characterization of cationic dicarbonyl Fe(II) PNP pincer complexes
Language: English
Authors: Kirchner, Karl 
Glatz, Matthias 
Schröder-Holzhacker, Christian 
Bichler, Bernhard 
Stöger, Berthold 
Mereiter, Kurt 
Veiros, Luis F. 
Category: Research Article
Forschungsartikel
Issue Date: 2016
Journal: Monatshefte für Chemie - Chemical Monthly
ISSN: 1434-4475
Abstract: 
In the present work, we have prepared a series of octahedral Fe(II) complexes of the type trans-[Fe(PNP)(CO)2Cl]+—PNP are tridentate pincer-type ligands based on 2,6-diaminopyridine. These complexes are formed irrespective of the size of the substituents at the phosphorus sites and whether cis-[Fe(PNP)(Cl2)(CO)] or trans-[Fe(PNP)(Cl2)(CO)] are reacted with CO in the presence of 1 equiv of silver salts. X-ray structures of representative complexes are presented. Based on simple bonding considerations the selective formation of trans-dicarbonyl Fe(II) complexes is unexpected. In fact, DFT calculations confirm that trans-dicarbonyl complexes are indeed thermodynamically disfavored over the respective cis-dicarbonyl compounds, but are favored for kinetic reasons.
Keywords: Iron complexes; PNP pincer ligands; Carbon monoxide; DFT calculations
DOI: 10.1007/s00706-016-1811-x
Library ID: AC11360172
URN: urn:nbn:at:at-ubtuw:3-1980
Organisation: E163 - Institut für Angewandte Synthesechemie 
Publication Type: Article
Artikel
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